EXAMPLE

/* Call the AppMsgHook when an icon is dropped on a listview */

DoMethod(lvobj,MUIM_Notify,MUIA_AppMessage,MUIV_EveryTime,
         lvobj,3,MUIM_CallHook,&AppMsgHook,MUIV_TriggerValue);

/* Call the AppMsgHook when an icon is dropped on the window */

DoMethod(winobj,MUIM_Notify,MUIA_AppMessage,MUIV_EveryTime,
         winobj,3,MUIM_CallHook,&AppMsgHook,MUIV_TriggerValue);