AppendMenu( hMenu, MF_POPUP, (UINT)temp, TEXT("&Push me") );// 将菜单 temp 装进菜单 hMenu 中
hMenu 会有一个 Push me 下拉菜单,
temp 菜单就是 Push me 下拉菜单的内容,
新建一个菜单 temp2,并填充菜单
AppendMenu( temp2, MF_STRING, IDM_???, TEXT("XXXXXX") );
.....
...
AppendMenu( hMenu, MF_POPUP, (UINT)temp2, TEXT("abc") );
这样菜单栏就会有两个顶级菜单了