set m_isBeingDeleted to true (only) in SendDestroyEvent(); call it as early as possible during the window destruction to ensure that destroy event handlers can still access the full window object

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58246 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/frame.cpp

@@ -229,7 +229,8 @@ bool wxFrame::Create( wxWindow *parent,
 
 wxFrame::~wxFrame()
 {
-    m_isBeingDeleted = true;
+    SendDestroyEvent();
+
     DeleteAllBars();
 }
 

src/gtk1/toplevel.cpp

@@ -660,7 +660,7 @@ wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
         RemoveGrab();
     }
 
-    m_isBeingDeleted = true;
+    SendDestroyEvent();
 
     // it may also be GtkScrolledWindow in the case of an MDI child
     if (GTK_IS_WINDOW(m_widget))

src/gtk1/window.cpp

@@ -2437,7 +2437,6 @@ void wxWindowGTK::Init()
     m_sizeSet = false;
     m_hasVMT = false;
     m_needParent = true;
-    m_isBeingDeleted = false;
 
     m_noExpose = false;
     m_nativeSizeEvent = false;
@@ -2613,7 +2612,6 @@ wxWindowGTK::~wxWindowGTK()
     if ( g_delayedFocus == this )
         g_delayedFocus = NULL;
 
-    m_isBeingDeleted = true;
     m_hasVMT = false;
 
     // destroy children before destroying this window itself