diff --git a/build-VS2010-MT/libz-static/libz-static.vcxproj.filters b/build-VS2010-MT/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2010-MT/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2010-MT/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010-MT/libz/libz.vcxproj.filters b/build-VS2010-MT/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2010-MT/libz/libz.vcxproj.filters
+++ b/build-VS2010-MT/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010-MT/tests/example-static/example-static.vcxproj.filters b/build-VS2010-MT/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2010-MT/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2010-MT/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010-MT/tests/example/example.vcxproj.filters b/build-VS2010-MT/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2010-MT/tests/example/example.vcxproj.filters
+++ b/build-VS2010-MT/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010-MT/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2010-MT/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2010-MT/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2010-MT/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010-MT/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2010-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2010-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2010-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010-MT/tests/minigzip/minigzip.vcxproj.filters b/build-VS2010-MT/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2010-MT/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2010-MT/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010/libz-static/libz-static.vcxproj.filters b/build-VS2010/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2010/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2010/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010/libz/libz.vcxproj.filters b/build-VS2010/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2010/libz/libz.vcxproj.filters
+++ b/build-VS2010/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010/tests/example-static/example-static.vcxproj.filters b/build-VS2010/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2010/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2010/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010/tests/example/example.vcxproj.filters b/build-VS2010/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2010/tests/example/example.vcxproj.filters
+++ b/build-VS2010/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2010/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2010/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2010/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2010/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2010/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2010/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2010/tests/minigzip/minigzip.vcxproj.filters b/build-VS2010/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2010/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2010/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013-MT/libz-static/libz-static.vcxproj.filters b/build-VS2013-MT/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2013-MT/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2013-MT/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013-MT/libz/libz.vcxproj.filters b/build-VS2013-MT/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2013-MT/libz/libz.vcxproj.filters
+++ b/build-VS2013-MT/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013-MT/tests/example-static/example-static.vcxproj.filters b/build-VS2013-MT/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2013-MT/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2013-MT/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013-MT/tests/example/example.vcxproj.filters b/build-VS2013-MT/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2013-MT/tests/example/example.vcxproj.filters
+++ b/build-VS2013-MT/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013-MT/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2013-MT/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2013-MT/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2013-MT/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013-MT/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2013-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2013-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2013-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013-MT/tests/minigzip/minigzip.vcxproj.filters b/build-VS2013-MT/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2013-MT/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2013-MT/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013/libz-static/libz-static.vcxproj.filters b/build-VS2013/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2013/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2013/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013/libz/libz.vcxproj.filters b/build-VS2013/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2013/libz/libz.vcxproj.filters
+++ b/build-VS2013/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013/tests/example-static/example-static.vcxproj.filters b/build-VS2013/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2013/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2013/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013/tests/example/example.vcxproj.filters b/build-VS2013/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2013/tests/example/example.vcxproj.filters
+++ b/build-VS2013/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2013/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2013/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2013/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2013/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2013/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2013/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2013/tests/minigzip/minigzip.vcxproj.filters b/build-VS2013/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2013/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2013/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015-MT/libz-static/libz-static.vcxproj.filters b/build-VS2015-MT/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2015-MT/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2015-MT/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015-MT/libz/libz.vcxproj.filters b/build-VS2015-MT/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2015-MT/libz/libz.vcxproj.filters
+++ b/build-VS2015-MT/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015-MT/tests/example-static/example-static.vcxproj.filters b/build-VS2015-MT/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2015-MT/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2015-MT/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015-MT/tests/example/example.vcxproj.filters b/build-VS2015-MT/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2015-MT/tests/example/example.vcxproj.filters
+++ b/build-VS2015-MT/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015-MT/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2015-MT/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2015-MT/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2015-MT/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015-MT/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2015-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2015-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2015-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015-MT/tests/minigzip/minigzip.vcxproj.filters b/build-VS2015-MT/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2015-MT/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2015-MT/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015/libz-static/libz-static.vcxproj.filters b/build-VS2015/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2015/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2015/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015/libz/libz.vcxproj.filters b/build-VS2015/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2015/libz/libz.vcxproj.filters
+++ b/build-VS2015/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015/tests/example-static/example-static.vcxproj.filters b/build-VS2015/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2015/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2015/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015/tests/example/example.vcxproj.filters b/build-VS2015/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2015/tests/example/example.vcxproj.filters
+++ b/build-VS2015/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2015/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2015/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2015/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2015/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2015/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2015/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2015/tests/minigzip/minigzip.vcxproj.filters b/build-VS2015/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2015/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2015/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017-MT/libz-static/libz-static.vcxproj.filters b/build-VS2017-MT/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2017-MT/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2017-MT/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017-MT/libz/libz.vcxproj.filters b/build-VS2017-MT/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2017-MT/libz/libz.vcxproj.filters
+++ b/build-VS2017-MT/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017-MT/tests/example-static/example-static.vcxproj.filters b/build-VS2017-MT/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2017-MT/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2017-MT/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017-MT/tests/example/example.vcxproj.filters b/build-VS2017-MT/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2017-MT/tests/example/example.vcxproj.filters
+++ b/build-VS2017-MT/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017-MT/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2017-MT/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2017-MT/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2017-MT/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017-MT/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2017-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2017-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2017-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017-MT/tests/minigzip/minigzip.vcxproj.filters b/build-VS2017-MT/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2017-MT/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2017-MT/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017/libz-static/libz-static.vcxproj.filters b/build-VS2017/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2017/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2017/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017/libz/libz.vcxproj.filters b/build-VS2017/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2017/libz/libz.vcxproj.filters
+++ b/build-VS2017/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017/tests/example-static/example-static.vcxproj.filters b/build-VS2017/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2017/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2017/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017/tests/example/example.vcxproj.filters b/build-VS2017/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2017/tests/example/example.vcxproj.filters
+++ b/build-VS2017/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2017/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2017/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2017/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2017/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2017/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2017/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2017/tests/minigzip/minigzip.vcxproj.filters b/build-VS2017/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2017/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2017/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-MT/libz-static/libz-static.vcxproj.filters b/build-VS2019-MT/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2019-MT/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2019-MT/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-MT/libz/libz.vcxproj.filters b/build-VS2019-MT/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2019-MT/libz/libz.vcxproj.filters
+++ b/build-VS2019-MT/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-MT/tests/example-static/example-static.vcxproj.filters b/build-VS2019-MT/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2019-MT/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2019-MT/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-MT/tests/example/example.vcxproj.filters b/build-VS2019-MT/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2019-MT/tests/example/example.vcxproj.filters
+++ b/build-VS2019-MT/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-MT/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2019-MT/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2019-MT/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2019-MT/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-MT/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2019-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2019-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2019-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-MT/tests/minigzip/minigzip.vcxproj.filters b/build-VS2019-MT/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2019-MT/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2019-MT/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-arm/libz-static/libz-static.vcxproj.filters b/build-VS2019-arm/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2019-arm/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2019-arm/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-arm/libz/libz.vcxproj.filters b/build-VS2019-arm/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2019-arm/libz/libz.vcxproj.filters
+++ b/build-VS2019-arm/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-arm/tests/example-static/example-static.vcxproj.filters b/build-VS2019-arm/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2019-arm/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2019-arm/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-arm/tests/example/example.vcxproj.filters b/build-VS2019-arm/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2019-arm/tests/example/example.vcxproj.filters
+++ b/build-VS2019-arm/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-arm/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2019-arm/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2019-arm/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2019-arm/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-arm/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2019-arm/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2019-arm/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2019-arm/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019-arm/tests/minigzip/minigzip.vcxproj.filters b/build-VS2019-arm/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2019-arm/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2019-arm/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019/libz-static/libz-static.vcxproj.filters b/build-VS2019/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2019/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2019/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019/libz/libz.vcxproj.filters b/build-VS2019/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2019/libz/libz.vcxproj.filters
+++ b/build-VS2019/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019/tests/example-static/example-static.vcxproj.filters b/build-VS2019/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2019/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2019/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019/tests/example/example.vcxproj.filters b/build-VS2019/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2019/tests/example/example.vcxproj.filters
+++ b/build-VS2019/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2019/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2019/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2019/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2019/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2019/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2019/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2019/tests/minigzip/minigzip.vcxproj.filters b/build-VS2019/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2019/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2019/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-MT/libz-static/libz-static.vcxproj.filters b/build-VS2022-MT/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2022-MT/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2022-MT/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-MT/libz/libz.vcxproj.filters b/build-VS2022-MT/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2022-MT/libz/libz.vcxproj.filters
+++ b/build-VS2022-MT/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-MT/tests/example-static/example-static.vcxproj.filters b/build-VS2022-MT/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2022-MT/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2022-MT/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-MT/tests/example/example.vcxproj.filters b/build-VS2022-MT/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2022-MT/tests/example/example.vcxproj.filters
+++ b/build-VS2022-MT/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-MT/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2022-MT/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2022-MT/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2022-MT/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-MT/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2022-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2022-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2022-MT/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-MT/tests/minigzip/minigzip.vcxproj.filters b/build-VS2022-MT/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2022-MT/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2022-MT/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-arm/libz-static/libz-static.vcxproj.filters b/build-VS2022-arm/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2022-arm/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2022-arm/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-arm/libz/libz.vcxproj.filters b/build-VS2022-arm/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2022-arm/libz/libz.vcxproj.filters
+++ b/build-VS2022-arm/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-arm/tests/example-static/example-static.vcxproj.filters b/build-VS2022-arm/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2022-arm/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2022-arm/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-arm/tests/example/example.vcxproj.filters b/build-VS2022-arm/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2022-arm/tests/example/example.vcxproj.filters
+++ b/build-VS2022-arm/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-arm/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2022-arm/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2022-arm/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2022-arm/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-arm/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2022-arm/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2022-arm/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2022-arm/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022-arm/tests/minigzip/minigzip.vcxproj.filters b/build-VS2022-arm/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2022-arm/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2022-arm/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022/libz-static/libz-static.vcxproj.filters b/build-VS2022/libz-static/libz-static.vcxproj.filters
index 4dfe95b..1feb7ba 100644
--- a/build-VS2022/libz-static/libz-static.vcxproj.filters
+++ b/build-VS2022/libz-static/libz-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022/libz/libz.vcxproj.filters b/build-VS2022/libz/libz.vcxproj.filters
index e97f83a..6b28b74 100644
--- a/build-VS2022/libz/libz.vcxproj.filters
+++ b/build-VS2022/libz/libz.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022/tests/example-static/example-static.vcxproj.filters b/build-VS2022/tests/example-static/example-static.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2022/tests/example-static/example-static.vcxproj.filters
+++ b/build-VS2022/tests/example-static/example-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022/tests/example/example.vcxproj.filters b/build-VS2022/tests/example/example.vcxproj.filters
index 11b833a..ad47e54 100644
--- a/build-VS2022/tests/example/example.vcxproj.filters
+++ b/build-VS2022/tests/example/example.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022/tests/infcover-static/infcover-static.vcxproj.filters b/build-VS2022/tests/infcover-static/infcover-static.vcxproj.filters
index aa8b17b..5d7e7ba 100644
--- a/build-VS2022/tests/infcover-static/infcover-static.vcxproj.filters
+++ b/build-VS2022/tests/infcover-static/infcover-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022/tests/minigzip-static/minigzip-static.vcxproj.filters b/build-VS2022/tests/minigzip-static/minigzip-static.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2022/tests/minigzip-static/minigzip-static.vcxproj.filters
+++ b/build-VS2022/tests/minigzip-static/minigzip-static.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
diff --git a/build-VS2022/tests/minigzip/minigzip.vcxproj.filters b/build-VS2022/tests/minigzip/minigzip.vcxproj.filters
index 7d8a5d4..dac8af0 100644
--- a/build-VS2022/tests/minigzip/minigzip.vcxproj.filters
+++ b/build-VS2022/tests/minigzip/minigzip.vcxproj.filters
@@ -7,7 +7,7 @@
     </Filter>
     <Filter Include="Header Files">
       <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
     </Filter>
     <Filter Include="Resource Files">
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>