Fixed wxNotebook::RemovePage(),

Made modal dialogs children of wxApp->GetTopWindow() if
    no parent is given.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7333 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/dialogs/dialogs.cpp

@@ -267,7 +267,7 @@ void MyFrame::LogDialog(wxCommandEvent& event)
 
 void MyFrame::MessageBox(wxCommandEvent& WXUNUSED(event) )
 {
-  wxMessageDialog dialog( this, "This is a message box\nA long, long string to test out the message box properly",
+  wxMessageDialog dialog( NULL, "This is a message box\nA long, long string to test out the message box properly",
       "Message box text", wxYES_NO|wxCANCEL|wxICON_INFORMATION);
 
   dialog.ShowModal();