How to Disable Alt F4 Acceletartor Key when i disable CANCEL Button in MFC Dialog Based application

How to Disable Alt F4 Acceletartor Key when i disable CANCEL Button in MFC Dialog Based application.

Find or add the OnSysCommand message handler and add some code similar to this:

<P>

<PRE>

void CJunkDlg::OnSysCommand(UINT nID, LPARAM lParam)

{

if (bPreventClose && (nID == SC_CLOSE))

{

return;

}

//... rest of function ...

}

</PRE>


Toggle bPreventClose to be true or false as you enable or disable the Cancel button.

This will also disable the close button. How can only Alt+F4 be disabled?