Tried to fix corrupted display of wxTextCtrl,

Corrected wxFileDialog's multiple file option.
  Corrected event mask for CaptureMouse(),
  Small change to "best visual" code.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5805 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/app.cpp

@@ -285,9 +285,6 @@ bool wxApp::OnInitGui()
         visual = vis;
     }
 
-    wxRootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
-    gtk_widget_realize( wxRootWindow );
-
     /* Nothing to do for 15, 16, 24, 32 bit displays */
     if (visual->depth > 8) return TRUE;
 
@@ -635,6 +632,9 @@ int wxEntry( int argc, char *argv[] )
     if ( !wxTheApp->OnInitGui() )
         retValue = -1;
 
+    wxRootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
+    gtk_widget_realize( wxRootWindow );
+
     // Here frames insert themselves automatically into wxTopLevelWindows by
     // getting created in OnInit().
     if ( retValue == 0 )