Backgrounds work again

splitter sample compiles with Unicode
  if a wxClientDC is used on an unrealized widget,
    the widget's realization is forced in wxClientDC
  added underscores to wxMenuBar - don't work..
  tried to figure out why wxFrame doesn't get keyboard input


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2281 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/dcclient.cpp

@@ -109,10 +109,23 @@ wxWindowDC::wxWindowDC( wxWindow *window )
     m_owner = (wxWindow *)NULL;
   
     if (!window) return;
+    
     GtkWidget *widget = window->m_wxwindow;
     if (!widget) return;
+    
     m_window = widget->window;
+    
+    /* not realized ? */
+    if (!m_window)
+    {
+         /* force realization */
+         gtk_widget_realize( widget );
+         m_window = widget->window;
+    }
+    
+    /* still not realized ? */
     if (!m_window) return;
+    
     if (window->m_wxwindow)
         m_cmap = gtk_widget_get_colormap( window->m_wxwindow );
     else