Knowledge Base Nr: 00117 contextmenu.cpp - http://www.swe-kaiser.de

MFC: verschiedene Varianten von kontextsensitiven Popupmenüs:

  
//variante 1: neues menü in resource hinzufügen und an jeder beliebigen stelle zulassen
void CWinAmpInfoDlg::OnContextMenu(CWnd* /*pWnd*/, CPoint point)
{
    CMenu menu;

    menu.LoadMenu(IDR_MYPOPUPMENU);

    menu.GetSubMenu(0)->TrackPopupMenu(TPM_LEFTALIGN |TPM_RIGHTBUTTON
                                     , point.x, point.y, this);
}

//variante 2: existierendes (unter-)menü benutzen
void CVideoServerView::OnContextMenu(CWnd* pWnd, CPoint point)
{
    CMenu menu;
    menu.LoadMenu(IDR_MAINFRAME);
    menu.GetSubMenu(2)->TrackPopupMenu(TPM_LEFTALIGN|TPM_RIGHTBUTTON
                                     , point.x, point.y, this);
}

//variante 3: zweig des aktiven menüs:benutzen
void CVideoServerView::OnContextMenu(CWnd* pWnd, CPoint point)
{
    CMenu* menu_bar = AfxGetMainWnd()->GetMenu();
    CMenu* file_menu = menu_bar->GetSubMenu(0); //(meistens 'File'-menü)
    file_menu->TrackPopupMenu(TPM_LEFTALIGN|TPM_RIGHTBUTTON
                            , point.x, point.y, this);
}

//variante 4: kontextsensitiv für position innerhalb eines dialogs
void CVideoServerView::OnContextMenu(CWnd* pWnd, CPoint point)
{
    CWnd* pWndPreview = GetDlgItem(IDC_FRAME);

    CPoint p(point);
    ScreenToClient(&p);
    CWnd* pWndHit = this->ChildWindowFromPoint(p);

    if (pWndHit != pWndPreview) //contextmenü nur wenn rechte maustaste 'in' video-frame gedrückt
        return;
/*
    //umrechnung von maus(screen)-koordinaten in clientkoordinaten des controls
    RECT rect;
    pWndPreview->GetWindowRect(&rect);
    ScreenToClient(&rect);

    m_nMouseX = p.x - rect.left;
    m_nMouseY = p.y - rect.top;
*/
    CMenu menu;
    menu.LoadMenu(IDR_MAINFRAME);
    menu.GetSubMenu(2)->TrackPopupMenu(TPM_LEFTALIGN|TPM_RIGHTBUTTON, point.x, point.y, this);
}