MFC添加鼠标右键菜单消息

1 添加一个子菜单资源IDR_MENU1

2 添加 WM_CONTEXTMENU 消息，在消息相应函数中添加如下：

void CwinMsgDlg::OnContextMenu(CWnd* /*pWnd*/, CPoint point)
{
CMenu menu;
VERIFY(menu.LoadMenu(IDR_MENU1)); //IDR_MENU1为菜单ID
CMenu* pPopup = menu.GetSubMenu(0);
ASSERT(pPopup != NULL);

pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y,this);

}