Sets the tool palette as a drag source. Enables all groups and items in the tool palette as drag sources on button 1 and button 3 press with copy and move actions. See gtk_drag_source_set().
the GtkToolPaletteDragTargets which the widget should support
2.20
Sets the tool palette as a drag source. Enables all groups and items in the tool palette as drag sources on button 1 and button 3 press with copy and move actions. See gtk_drag_source_set().