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参数1:资源ID,参数2:该资源中菜单的位置。
void CXXXDlg::ShowRightMenu(UINT nIDResource,int nPos)
{
DWORD dwPos=GetMessagePos();
CPoint oPoint(LOWORD(dwPos),HIWORD(dwPos));
CMenu oMenu;
oMenu.LoadMenuW(nIDResource);
CMenu* poMenu=oMenu.GetSubMenu(nPos);
poMenu->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, oPoint.x, oPoint.y, this);
}