Fixing crash under BigSur

We get a late redraw event in the current 11.X versions, fixes wxWidgets#19030
CrealityOfficial · Jan 5, 2021 · 86c1fe4 · 86c1fe4
1 parent b58ee58
commit 86c1fe4
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/osx/cocoa/window.mm b/src/osx/cocoa/window.mm
@@ -2310,6 +2310,9 @@ When dragging the bottom part of the DND sample ("Drag text from here!")
     // Restrict the update region to the shape of the window, if any, and also
     // remember the region that we need to clear later.
     wxNonOwnedWindow* const tlwParent = wxpeer->MacGetTopLevelWindow();
+    if ( tlwParent == NULL )
+        return;
+
     const bool isTopLevel = tlwParent == wxpeer;
     wxRegion clearRgn;
     if ( tlwParent->GetWindowStyle() & wxFRAME_SHAPED )