Calling a virtual function from a destructor is not good:

rearranged code to avoid it.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19826 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/motif/toplevel.h

@@ -60,6 +60,8 @@ public:
 protected:
     // common part of all constructors
     void Init();
+    // common part of wxDialog/wxFrame destructors
+    void PreDestroy();
 
 private:
     // both these functions should be pure virtual

src/motif/dialog.cpp

@@ -208,6 +208,7 @@ void wxDialog::SetModal(bool flag)
 wxDialog::~wxDialog()
 {
     m_isBeingDeleted = TRUE;
+
     delete m_eventLoop;
 
     if (m_mainWidget)
@@ -221,6 +222,9 @@ wxDialog::~wxDialog()
     {
         XtUnmapWidget((Widget) m_mainWidget);
     }
+
+    PreDestroy();
+    DoDestroy();
 }
 
 void wxDialog::DoDestroy()

src/motif/frame.cpp

@@ -310,12 +310,16 @@ wxFrame::~wxFrame()
         delete m_frameStatusBar;
         m_frameStatusBar = NULL;
     }
+
+    PreDestroy();
+    DoDestroy();
 }
 
 void wxFrame::DoDestroy()
 {
     Widget frameShell = (Widget)GetShellWidget();
 
+    if( frameShell )
         XtRemoveEventHandler( frameShell, StructureNotifyMask,
                               False, (XtEventHandler)wxFrameMapProc,
                               (XtPointer)this );

src/motif/toplevel.cpp

@@ -64,7 +64,7 @@ static void wxTLWEventHandler( Widget wid,
 // wxTopLevelWindowMotif implementation
 // ===========================================================================
 
-wxTopLevelWindowMotif::~wxTopLevelWindowMotif()
+void wxTopLevelWindowMotif::PreDestroy()
 {
     wxTopLevelWindows.DeleteObject(this);
 
@@ -85,9 +85,10 @@ wxTopLevelWindowMotif::~wxTopLevelWindowMotif()
                               wxTLWEventHandler,
                               (XtPointer)this );
     }
+}
 
-    DoDestroy();
-
+wxTopLevelWindowMotif::~wxTopLevelWindowMotif()
+{
     SetMainWidget( (WXWidget)0 );
 
     // If this is the last top-level window, exit.