wxComboBox appearance fixes, looks fine now but doesn't really work under GTK

yet


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10945 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/button.cpp

@@ -152,7 +152,11 @@ wxSize wxButton::DoGetBestClientSize() const
 
 void wxButton::DoDraw(wxControlRenderer *renderer)
 {
-    renderer->DrawButtonBorder();
+    if ( !(GetWindowStyle() & wxBORDER_NONE) )
+    {
+        renderer->DrawButtonBorder();
+    }
+
     renderer->DrawLabel(m_bitmap, m_marginBmpX, m_marginBmpY);
 }