近在眼前空白窗口创建菜单例程

处理,子程序1,GetWindowLongA,GetMenu,GetSubMenu,InsertMenuA,GetMenuItemID,SetMenu,CreateMenu,CreatePopupMenu,AppendMenu,CallWindowProcA,SetWindowLongA,SetMenuItemBitmaps,GetSystemMetrics,LoadImage,TrackPopupMenu,GetMenuString