void gtk_drag_source_set_icon_pixbuf ( GtkWidget* widget, GdkPixbuf* pixbuf )
Sets the icon that will be used for drags from a particular widget
GdkPixbuf. GTK+ retains a reference for
pixbuf and will
release it when it is no longer needed.
GdkPixbuffor the drag icon.
The data is owned by the caller of the function.