2.1 如何动态添加和删除菜单项

1. AppendMenu
2. InsertMenu
3. DeleteMenu

/////////////////////////////////////////////////////////////////////////////

// CMainFrame message handlers

void CMainFrame::OnAppendMenu()

{

    //获得主菜单

    CMenu* pMenu = GetMenu();

    //获得子菜单

    CMenu* pSubMenu = pMenu->GetSubMenu(4);

    if (pSubMenu->GetMenuItemCount() == 4)

    {

        //在菜单末端添加菜单项

        pSubMenu->AppendMenu(MF_STRING, ID_TEST_MENU, _T("新菜单项"));

        //重画菜单

        DrawMenuBar();

    }

}

void CMainFrame::OnInsertMenu()

{

    //获得主菜单

    CMenu* pMenu = GetMenu();

    //获得子菜单

    CMenu* pSubMenu = pMenu->GetSubMenu(4);

    if (pSubMenu->GetMenuItemCount() == 4)

    {

        //在菜单指定位置添加菜单项

        pSubMenu->InsertMenu(4, MF_BYPOSITION, ID_TEST_MENU, _T("新菜单项"));

        //重画菜单

        DrawMenuBar();

    }

}

void CMainFrame::OnRemoveMenu()

{

    //获得主菜单

    CMenu* pMenu = GetMenu();

    //获得子菜单

    CMenu* pSubMenu = pMenu->GetSubMenu(4);

    if (pSubMenu->GetMenuItemCount() == 5)

    {

         //删除菜单项

         pSubMenu->RemoveMenu(4, MF_BYPOSITION);

        //重画菜单

        DrawMenuBar();

    }

}

void CMainFrame::OnDeleteMenu()

{

    //获得主菜单

    CMenu* pMenu = GetMenu();

    //获得子菜单

    CMenu* pSubMenu = pMenu->GetSubMenu(4);

    if (pSubMenu->GetMenuItemCount() == 5)

    {

         //删除菜单项

         pSubMenu->DeleteMenu(4, MF_BYPOSITION);

        //重画菜单

        DrawMenuBar();

    }

}

void CMainFrame::OnTestMenu()

{

    AfxMessageBox(_T("测试菜单项命令"));

}

2.2 如何在系统菜单中添加菜单项

1. GetSystemMenu

//获得系统菜单

CMenu* pMenu = GetSystemMenu(FALSE);

//删除系统菜单项

pMenu->RemoveMenu(SC_MOVE, MF_STRING);

//添加菜单项

pMenu->InsertMenu(0, MF_BYPOSITION, ID_TEST_MENU, _T("测试菜单项"));

//重画菜单

DrawMenuBar();

2.3 如何禁用关闭按钮

1. EnableMenuItem

//获得系统菜单

CMenu* pMenu = GetSystemMenu(FALSE);

//禁用关闭按钮

pMenu->EnableMenuItem(SC_CLOSE, MF_BYCOMMAND | MF_GRAYED);

2.4 如何启用和禁用菜单项

CCmdUI的Enable方法

void CMainFrame::OnTestMenu1()

{

    m_bEnable1 = FALSE;

    m_bEnable2 = TRUE;

}

void CMainFrame::OnUpdateTestMenu1(CCmdUI* pCmdUI)

{

    //启用或禁用菜单1

    pCmdUI->Enable(m_bEnable1);

}

void CMainFrame::OnTestMenu2()

{

    m_bEnable1 = TRUE;

    m_bEnable2 = FALSE;

}

void CMainFrame::OnUpdateTestMenu2(CCmdUI* pCmdUI)

{

    //启用或禁用菜单2

    pCmdUI->Enable(m_bEnable2);

}

2.5 如何设置菜单项的检查状态

SetCheck方法

void CMainFrame::OnUpdateTestMenu(CCmdUI* pCmdUI)

{

    //设置菜单项检查状态

    pCmdUI->SetCheck(m_nCheck);

}

2.6 如何实现快捷菜单

即右键菜单ContextMenu

void CDemoView::OnContextMenu(CWnd* pWnd, CPoint point)

{

    CMenu menu;

    //加载菜单

    if (!menu.LoadMenu(IDR_MENU))

    {

        return;

    }

    //获得子菜单

    CMenu* pPopupMenu = menu.GetSubMenu(0);

    //弹出菜单

    pPopupMenu->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON,

        point.x, point.y, pWnd);

}

void CDemoView::OnTestMenu1()

{

    AfxMessageBox(_T("快捷菜单项1命令"));

}

void CDemoView::OnTestMenu2()

{

    AfxMessageBox(_T("快捷菜单项2命令"));

}