[gtk+] toolpalette: call set_has_window

[Timm Bäder <baedert src gnome org>]

commit 5b05c12780698e56f52fccb523f1e386ed0352ee
Author: Timm Bäder <mail baedert org>
Date:   Sun Dec 4 11:49:29 2016 +0100

    toolpalette: call set_has_window

 gtk/gtktoolpalette.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtktoolpalette.c b/gtk/gtktoolpalette.c
index eae2321..a121083 100644
--- a/gtk/gtktoolpalette.c
+++ b/gtk/gtktoolpalette.c
@@ -222,6 +222,8 @@ gtk_tool_palette_init (GtkToolPalette *palette)
       dnd_target_atom_item = gdk_atom_intern_static_string (dnd_targets[0].target);
       dnd_target_atom_group = gdk_atom_intern_static_string (dnd_targets[1].target);
     }
+
+  gtk_widget_set_has_window (GTK_WIDGET (palette), TRUE);
 }
 
 static void