MFC 对话框中动态创建N级菜单以及响应事件

创建一个基于对话框的工程，工程名为CreateMenu

为该对话框增加一个文件菜单项和测试菜单项，如下图所示

测试菜单项至少要有一个子菜单项

在对话框属性中关联该菜单

在resource.h中增加一个ID_TESTMENU宏

#define ID_TESTMENU          5000

在对话框中添加一个Button按钮，建立消息映射，编辑代码如下

void CCreateMenuDlg::OnButton1() 

{

    // TODO: Add your control notification handler code here

    char buf[2];

    //获取顶级菜单

    CMenu* pMenu=GetMenu();

    //获取1级菜单

    CMenu* pFileMenu=pMenu->GetSubMenu(0);

    CMenu* pTestMenu=pMenu->GetSubMenu(1);

    //添加2级菜单

    if(pTestMenu->GetSafeHmenu()==NULL) 

        return;

    //添加一个2级弹出菜单，将"文件"菜单项作为该菜单的子菜单

    pTestMenu->AppendMenu(MF_POPUP,(UINT)pFileMenu->m_hMenu,"文件");

    //添加一个2级弹出菜单，该菜单的子菜单为空

    pTestMenu->AppendMenu(MF_POPUP,(UINT)pTestMenu->m_hMenu,"测试");

    //添加10个2级普通菜单

    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级菜单"+CString(buf));

    }

    //添加n级菜单

    CMenu* pnMenu=pTestMenu->GetSubMenu(2);

    pnMenu->AppendMenu(MF_POPUP,(UINT)pnMenu->m_hMenu,"3级菜单");

    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("级菜单"));

    }

    pnMenu->GetSubMenu(0)->AppendMenu(

        MF_STRING,ID_TESTMENU,"9级菜单");

}

响应单击菜单的事件

添加OnCommand的消息映射，编辑代码如下

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);

}

运行结果：

源码下载