Fix non-default window background color with GTK+ >= 3.20

GTK+ no longer automatically paints non-default window background. See #17586
2016-11-09 20:06:26 -08:00
parent b1a19e6b6c
commit 9bb5d0435a
1 changed files with 9 additions and 0 deletions
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -4352,6 +4352,15 @@ void wxWindowGTK::GTKSendPaintEvents(const GdkRegion* region)
                                    0, 0, w, h);
 #endif // !__WXGTK3__
            }
+#ifdef __WXGTK3__
+            else if (m_backgroundColour.IsOk() && gtk_check_version(3,20,0) == NULL)
+            {
+                cairo_save(cr);
+                gdk_cairo_set_source_rgba(cr, m_backgroundColour);
+                cairo_paint(cr);
+                cairo_restore(cr);
+            }
+#endif
            break;

        case wxBG_STYLE_PAINT: