From 0510b846a4dd25b2cc29b291e3445bfa99f6aa67 Mon Sep 17 00:00:00 2001
From: Nir Lichtman <nir@lichtman.org>
Date: Mon, 5 Feb 2024 01:46:07 +0200
Subject: [PATCH] Do not tile popups

---
 Makefile |  8 +++++++-
 tiling.c | 14 ++++++++++++--
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 16a14db..72c3e82 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ LD = link
 EXEC = lightwm.exe
 DLL = lightwm_dll.dll
 
-all: clean $(DLL) $(EXEC)
+all: clean_old $(DLL) $(EXEC)
 
 $(EXEC): wm.c
 	$(CC) wm.c tiling.c error.c user32.lib /link /out:$(EXEC)
@@ -15,5 +15,11 @@ $(DLL): wm_dll.obj
 wm_dll.obj: wm_dll.c
 	$(CC) /c wm_dll.c
 
+# Temporary for a couple of weeks
+clean_old:
+	if exist wm.exe ( del wm.exe )
+	if exist wm_dll.dll ( del wm_dll.dll )
+	echo Old cleanup done
+
 clean:
 	del *.obj *.exe *.dll *.lib *.exp
diff --git a/tiling.c b/tiling.c
index 5db98c1..ce7ccf1 100644
--- a/tiling.c
+++ b/tiling.c
@@ -6,12 +6,22 @@ HWND managed[256];
 int currentManagedIndex = 0;
 
 BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM lparam) {
+	if (currentManagedIndex > 255) {
+		return FALSE;
+	}
+
 	if (!IsWindowVisible(hwnd) || IsHungAppWindow(hwnd)) {
 		return TRUE;
 	}
 
-	if (currentManagedIndex > 255) {
-		return FALSE;
+	WINDOWINFO winInfo;
+	winInfo.cbSize = sizeof(WINDOWINFO);
+	if (!GetWindowInfo(hwnd, &winInfo)) {
+		return TRUE;
+	}
+
+	if (winInfo.dwStyle & WS_POPUP) {
+		return TRUE;
 	}
 
 	if (GetWindowTextLengthW(hwnd) == 0) {