+ return s_button;
+}
+
+GtkWidget *
+wxRendererGTK::GetTreeWidget()
+{
+ static GtkWidget *s_tree = NULL;
+ static GtkWidget *s_window = NULL;
+
+ if ( !s_tree )
+ {
+ s_tree = gtk_tree_view_new();
+ s_window = gtk_window_new( GTK_WINDOW_POPUP );
+ gtk_widget_realize( s_window );
+ gtk_container_add( GTK_CONTAINER(s_window), s_tree );
+ gtk_widget_realize( s_tree );
+ }
+
+ return s_tree;
+}
+
+
+// This one just gets the button used by the column header. Although it's
+// still a gtk_button the themes will typically differentiate and draw them
+// differently if the button is in a treeview.
+GtkWidget *
+wxRendererGTK::GetHeaderButtonWidget()
+{
+ static GtkWidget *s_button = NULL;
+
+ if ( !s_button )
+ {
+ // Get the dummy tree widget, give it a column, and then use the
+ // widget in the column header for the rendering code.
+ GtkWidget* treewidget = GetTreeWidget();
+ GtkTreeViewColumn* column = gtk_tree_view_column_new();
+ gtk_tree_view_append_column(GTK_TREE_VIEW(treewidget), column);
+ s_button = column->button;
+ }
+
+ return s_button;
+}
+
+// ----------------------------------------------------------------------------
+// list/tree controls drawing
+// ----------------------------------------------------------------------------
+
+int
+wxRendererGTK::DrawHeaderButton(wxWindow *win,
+ wxDC& dc,
+ const wxRect& rect,
+ int flags,
+ wxHeaderSortIconType sortArrow,
+ wxHeaderButtonParams* params)
+{
+
+ GtkWidget *button = GetHeaderButtonWidget();
+
+ GdkWindow* gdk_window = dc.GetGDKWindow();
+ wxASSERT_MSG( gdk_window,
+ wxT("cannot use wxRendererNative on wxDC of this type") );
+
+ int x_diff = 0;
+ if (win->GetLayoutDirection() == wxLayout_RightToLeft)
+ x_diff = rect.width;
+