在子菜单项上使用EnableMenuItem

I have an old MFC app, and I am trying to disable menu items.

我有一个旧的MFC应用程序,我试图禁用菜单项。

I have a menu with a typical sort of structure:

我有一个典型的结构菜单:

File
 - Open
 - Save
 - Close
Edit
 - Cut
 - Copy
 - Paste

Using the following command:

使用以下命令:

EnableMenuItem(hMenu,ID_FILE, MF_BYCOMMAND | MF_GRAYED);

I can gray out menu commands of the top level menu items. However, if I do

我可以使*菜单项的菜单命令变灰。但是,如果我这样做

EnableMenuItem(hMenu,ID_PASTE, MF_BYCOMMAND | MF_GRAYED);

I cannot gray out any of the sub menu items. If I get the submenu handle and pass that to EnableMenuItem, it does me no good. Nor does it help if I use SetMenuItemInfo either

我无法使任何子菜单项变灰。如果我得到子菜单句柄并将其传递给EnableMenuItem,那对我没有好处。如果我也使用SetMenuItemInfo也没有帮助

Any ideas on how to disable sub-menu items? Are there any gotchas with the EnableMenuItem function?

有关如何禁用子菜单项的任何想法? EnableMenuItem函数有任何问题吗?

1 个解决方案

#1

According to MSDN you need to call DrawMenuBar() to get the UI to reflect changes to the menu state.

根据MSDN,您需要调用DrawMenuBar()来获取UI以反映菜单状态的更改。