wxWindow *top_frame = m_parent;
while (top_frame->GetParent() && !(top_frame->GetParent()->IsTopLevel()))
top_frame = top_frame->GetParent();
- GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
- if (window->default_widget)
+ if ( GTK_IS_WINDOW(top_frame->m_widget) )
{
- gtk_widget_activate (window->default_widget);
- return;
+ GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
+ if ( window )
+ {
+ GtkWidget *widgetDef = window->default_widget;
+
+ if ( widgetDef && GTK_IS_WINDOW(widgetDef) )
+ {
+ gtk_widget_activate(widgetDef);
+ return;
+ }
+ }
}
}