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<h3 align="center"><font COLOR="#AOAO99"></font></h3>
<table width="100%" border="1" cellspacing="1">
<tr><td><p align="center"><font color="#FF0000">如何激活变灰的弹出菜单?</font></td></tr>
<tr><td><p>
</Br>
在设计菜单时设定为GRAYED的菜单项,如何在运行时激活它?<Br>
</Br>
请看下面的示例代码:<Br>
</Br>
void CMyView::OnRButtonDown(UINT nFlags, CPoint point)<Br>
{<Br>
CScrollView::OnRButtonDown(nFlags, point);<Br>
</Br>
CMenu *menu, *popup;<Br>
menu = new CMenu();<Br>
</Br>
// load menu from resource file<Br>
menu->LoadMenu( IDR_POPUPMENU );<Br>
popup = menu->GetSubMenu(0); // item 0 is DUMMY<Br>
</Br>
UINT nEnable;<Br>
nEnable = MF_BYCOMMAND|MF_GRAYED;<Br>
</Br>
if( your test )<Br>
{<Br>
nEnable = MF_BYCOMMAND|MF_ENABLED;<Br>
}<Br>
</Br>
popup->EnableMenuItem( ID_YOUR_ID, nEnable );<Br>
</Br>
//display menu<Br>
ClientToScreen(&point);<Br>
popup->TrackPopupMenu(<Br>
TPM_LEFTALIGN | TPM_RIGHTBUTTON,<Br>
point.x, point.y, this );<Br>
delete menu;<Br>
}<Br>
</Br>
</Br>
</p></td></tr>
</table>
</body></html>
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