CMFCPopupMenu的使用，以及子菜单按钮的激活与变灰

CMFCPopupMenu的使用，以及子菜单按钮的激活与变灰

1，定义鼠标左键响应函数

void CNetBroad3View::OnLButtonDown(CPoint point, int nUnitSn)
{
    POINT ptScreen;
    ptScreen = point;
    ClientToScreen(&ptScreen);

    CMenu menuPopUp;
    menuPopUp.LoadMenuA(IDR_POPUP_EQUIP);　　//IDR_POPUP_EQUIP菜单ID
    
    CMenu* pPopup = menuPopUp.GetSubMenu(0);
    ASSERT(pPopup != NULL);

    if (pPopup)
    {
        CMFCPopupMenu* pPopupMenu = new CMFCPopupMenu;
        pPopupMenu->SetAutoDestroy( TRUE ); 
        if (pPopupMenu)
        {
            pPopupMenu->Create (this, ptScreen.x, ptScreen.y, pPopup->Detach (), TRUE);
            pPopupMenu->SetForegroundWindow();
        }
    }    
    return TRUE;
}

2.激活子菜单按钮，首先定义函数

afx_msg void OnUpdateBroadBegin(CCmdUI* pCmdUI);
afx_msg void OnPopBroadBegin();

3.添加消息映射

ON_UPDATE_COMMAND_UI(IDC_BUTTON_PRINTINVOICE,OnEnablePrint)
ON_BN_CLICKED(IDC_BUTTON_PRINTINVOICE,OnPrintInvoice)

4.添加代码

void CNetBroad3View::OnUpdateBroadBegin(CCmdUI* pCmdUI)
{
    pCmdUI->Enable(TRUE); //激活按钮
    return;
}
void CNetBroad3View::OnPopBroadBegin()
{
    MessageBox(_T("打印信息"));//按钮处理代码
    return;
}