Question

How can I hide a menu item under certain conditions in MFC?
I’m not interested in just graying it out.

Answer 1

Add an Update Handler for your menu item (using ON_UPDATE_COMMAND_UI).

This line should appear in your message map:

  ON_UPDATE_COMMAND_UI(ID_MYMENUITEM, OnUpdateMyMenuItem) 

In the handler, use this code:

void CMainFrame::OnUpdateMyMenuItem(CCmdUI *pCmdUI) {   if (pCmdUI->m_pMenu!=NULL)     pCmdUI->m_pMenu->DeleteMenu(pCmdUI->m_nID, MF_BYCOMMAND); }