From 2a61ceae5b08fef8d3038fa2ca1fa89ddbc32438 Mon Sep 17 00:00:00 2001
From: xiaoyeliu <166936931+womendoushihaoyin@users.noreply.github.com>
Date: Sat, 30 Nov 2024 22:23:07 +0800
Subject: [PATCH] Fix: The "Unsaved Changes Dialog" pops up, but the content
 display section is empty. (#7482)

fix:The Unsaved Changes Dialog pops up, but the content display section is empty.
---
 src/slic3r/GUI/GUI_App.cpp              | 5 +++--
 src/slic3r/GUI/UnsavedChangesDialog.hpp | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 4415118af5d..aedbea2c07a 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -5647,7 +5647,8 @@ bool GUI_App::check_and_keep_current_preset_changes(const wxString& caption, con
         bool is_called_from_configwizard = postponed_apply_of_keeped_changes != nullptr;
 
         UnsavedChangesDialog dlg(caption, header, "", action_buttons);
-        if (dlg.ShowModal() == wxID_CANCEL)
+        bool no_need_change = dlg.getUpdateItemCount() == 0 ? true : false;
+        if (!no_need_change && dlg.ShowModal() == wxID_CANCEL)
             return false;
 
         auto reset_modifications = [this, is_called_from_configwizard]() {
@@ -5662,7 +5663,7 @@ bool GUI_App::check_and_keep_current_preset_changes(const wxString& caption, con
             load_current_presets(false);
         };
 
-        if (dlg.discard())
+        if (dlg.discard() || no_need_change)
             reset_modifications();
         else  // save selected changes
         {
diff --git a/src/slic3r/GUI/UnsavedChangesDialog.hpp b/src/slic3r/GUI/UnsavedChangesDialog.hpp
index f91fa844f49..c6dbd205057 100644
--- a/src/slic3r/GUI/UnsavedChangesDialog.hpp
+++ b/src/slic3r/GUI/UnsavedChangesDialog.hpp
@@ -312,6 +312,8 @@ class UnsavedChangesDialog : public DPIDialog
         {
         }
     };
+public:
+    int getUpdateItemCount() { return m_presetitems.size(); }  
 
 private:
     std::vector<PresetItem> m_presetitems;