X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7f555861b7e50f335c7b929bb76be38e9ebd69c5..1363811bb6338fb0dad6c16cfa47f46fb1eb3b99:/src/stubs/dialog.cpp?ds=sidebyside

diff --git a/src/stubs/dialog.cpp b/src/stubs/dialog.cpp
index d29f2bbc8f..bf3cae5e35 100644
--- a/src/stubs/dialog.cpp
+++ b/src/stubs/dialog.cpp
@@ -164,20 +164,13 @@ void wxDialog::Centre(int direction)
   int x_offset,y_offset ;
   int display_width, display_height;
   int  width, height, x, y;
-  wxFrame *frame ;
-  if (direction & wxCENTER_FRAME)
+  wxWindow *parent = GetParent();
+  if ((direction & wxCENTER_FRAME) && parent)
   {
-    frame = (wxFrame*)GetParent() ;
-    if (frame)
-    {
-      frame->GetPosition(&x_offset,&y_offset) ;
-      frame->GetSize(&display_width,&display_height) ;
-    }
+      parent->GetPosition(&x_offset,&y_offset) ;
+      parent->GetSize(&display_width,&display_height) ;
   }
   else
-    frame = NULL ;
-
-  if (frame==NULL)
   {
     wxDisplaySize(&display_width, &display_height);
     x_offset = 0 ;
@@ -244,35 +237,34 @@ void wxDialog::OnCancel(wxCommandEvent& event)
     }
 }
 
-bool wxDialog::OnClose()
+void wxDialog::OnCloseWindow(wxCloseEvent& event)
 {
-	// Behaviour changed in 2.0: we'll send a Cancel message by default,
+    // We'll send a Cancel message by default,
     // which may close the dialog.
-    // Check for looping if the Cancel event handler calls Close()
+    // Check for looping if the Cancel event handler calls Close().
+
+    // Note that if a cancel button and handler aren't present in the dialog,
+    // nothing will happen when you close the dialog via the window manager, or
+    // via Close().
+    // We wouldn't want to destroy the dialog by default, since the dialog may have been
+    // created on the stack.
+    // However, this does mean that calling dialog->Close() won't delete the dialog
+    // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
+    // sure to destroy the dialog.
+    // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 
     static wxList closing;
-
+    
     if ( closing.Member(this) )
-        return FALSE;
-
+        return;
+    
     closing.Append(this);
-
-	wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
-	cancelEvent.SetEventObject( this );
-	GetEventHandler()->ProcessEvent(cancelEvent);
+    
+    wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
+    cancelEvent.SetEventObject( this );
+    GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 
     closing.DeleteObject(this);
-
-	return FALSE;
-}
-
-void wxDialog::OnCloseWindow(wxCloseEvent& event)
-{
-    // Compatibility
-    if ( GetEventHandler()->OnClose() || event.GetForce())
-    {
-        this->Destroy();
-    }
 }
 
 // Destroy the window (delayed, if a managed window)