MFC 對話方塊中動態建立N級選單以及響應事件

建立一個基於對話方塊的工程，工程名為CreateMenu

為該對話方塊增加一個檔案選單項和測試選單項，如下圖所示

 

測試選單項至少要有一個子選單項

在對話方塊屬性中關聯該選單

在resource.h中增加一個ID_TESTMENU巨集

#define ID_TESTMENU          5000

 

在對話方塊中新增一個Button按鈕，建立訊息對映，編輯程式碼如下

void CCreateMenuDlg::OnButton1()
{
    // TODO: Add your control notification handler code here
    char buf[2];
    //獲取頂級選單
    CMenu* pMenu=GetMenu();
    //獲取1級選單
    CMenu* pFileMenu=pMenu->GetSubMenu(0);
    CMenu* pTestMenu=pMenu->GetSubMenu(1);
    //新增2級選單
    if(pTestMenu->GetSafeHmenu()==NULL)
        return;
    //新增一個2級彈出選單，將"檔案"選單項作為該選單的子選單
    pTestMenu->AppendMenu(MF_POPUP,(UINT)pFileMenu->m_hMenu,"檔案");
    //新增一個2級彈出選單，該選單的子選單為空
    pTestMenu->AppendMenu(MF_POPUP,(UINT)pTestMenu->m_hMenu,"測試");
    //新增10個2級普通選單
    for(UINT m_ID=1;m_ID<=10;m_ID++)
    {
        itoa(m_ID,buf,10);
        pTestMenu->AppendMenu(MF_SEPARATOR);
        pTestMenu->AppendMenu(
            MF_STRING,m_ID+ID_TESTMENU,"2級選單"+CString(buf));
    }

    //新增n級選單
    CMenu* pnMenu=pTestMenu->GetSubMenu(2);
    pnMenu->AppendMenu(MF_POPUP,(UINT)pnMenu->m_hMenu,"3級選單");
    for(int i=0;i<5;i++)
    {
        pnMenu=pnMenu->GetSubMenu(0);
        if(pnMenu==NULL) return;
        itoa(i+4,buf,10);
        pnMenu->AppendMenu(
            MF_POPUP,(UINT)pnMenu->m_hMenu,buf + CString("級選單"));
    }
    pnMenu->GetSubMenu(0)->AppendMenu(
        MF_STRING,ID_TESTMENU,"9級選單");
}

 

響應單擊選單的事件

新增OnCommand的訊息對映，編輯程式碼如下

BOOL CCreateMenuDlg::OnCommand(WPARAM wParam, LPARAM lParam)
{
    // TODO: Add your specialized code here and/or call the base class
    UINT uMsg=LOWORD(wParam);
    char buf[2];
    if(uMsg==ID_TESTMENU)
    {
                MessageBox("HELLO!");
    }
    for(UINT i=1;i<=10;i++)
    {
        if(uMsg==ID_TESTMENU+i)
        {
            itoa(i,buf,10);
            MessageBox("HELLO! " + CString(buf));
        }
    }
    return CDialog::OnCommand(wParam, lParam);
}

 

 

 

執行結果：

 

原始碼下載