void gtk_tool_palette_set_drag_source ( GtkToolPalette* palette, GtkToolPaletteDragTargets targets )
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().
Available since: 2.20
GtkToolPaletteDragTargetswhich the widget should support.