Exemple #1
0
QT_ENSURE_STACK_ALIGNED_FOR_SSE STDMETHODIMP
QWindowsOleDropTarget::Drop(LPDATAOBJECT pDataObj, DWORD grfKeyState,
                            POINTL pt, LPDWORD pdwEffect)
{
    if (IDropTargetHelper* dh = QWindowsDrag::instance()->dropHelper())
        dh->Drop(pDataObj, reinterpret_cast<POINT*>(&pt), *pdwEffect);

    qCDebug(lcQpaMime) << __FUNCTION__ << ' ' << m_window
        << "keys=" << grfKeyState << "pt=" << pt.x << ',' << pt.y;

    m_lastPoint = QWindowsGeometryHint::mapFromGlobal(m_window, QPoint(pt.x,pt.y));
    // grfKeyState does not all ways contain button state in the drop
    QGuiApplicationPrivate::mouse_buttons = toQtMouseButtons(m_lastKeyState);
    QGuiApplicationPrivate::modifier_buttons = toQtKeyboardModifiers(grfKeyState);

    QWindowsDrag *windowsDrag = QWindowsDrag::instance();

    const QPlatformDropQtResponse response =
        QWindowSystemInterface::handleDrop(m_window, windowsDrag->dropData(),
                                           m_lastPoint,
                                           translateToQDragDropActions(*pdwEffect));

    QGuiApplicationPrivate::mouse_buttons = toQtMouseButtons(grfKeyState);
    m_lastKeyState = grfKeyState;

    if (response.isAccepted()) {
        const Qt::DropAction action = response.acceptedAction();
        if (action == Qt::MoveAction || action == Qt::TargetMoveAction) {
            if (action == Qt::MoveAction)
                m_chosenEffect = DROPEFFECT_MOVE;
            else
                m_chosenEffect = DROPEFFECT_COPY;
            HGLOBAL hData = GlobalAlloc(0, sizeof(DWORD));
            if (hData) {
                DWORD *moveEffect = reinterpret_cast<DWORD *>(GlobalLock(hData));
                *moveEffect = DROPEFFECT_MOVE;
                GlobalUnlock(hData);
                STGMEDIUM medium;
                memset(&medium, 0, sizeof(STGMEDIUM));
                medium.tymed = TYMED_HGLOBAL;
                medium.hGlobal = hData;
                FORMATETC format;
                format.cfFormat = CLIPFORMAT(RegisterClipboardFormat(CFSTR_PERFORMEDDROPEFFECT));
                format.tymed = TYMED_HGLOBAL;
                format.ptd = 0;
                format.dwAspect = 1;
                format.lindex = -1;
                windowsDrag->dropDataObject()->SetData(&format, &medium, true);
            }
        } else {
            m_chosenEffect = translateToWinDragEffects(action);
        }
    } else {
        m_chosenEffect = DROPEFFECT_NONE;
    }
    *pdwEffect = m_chosenEffect;

    windowsDrag->releaseDropDataObject();
    return NOERROR;
}
void QSimpleDrag::drop(const QMouseEvent *me)
{
    QBasicDrag::drop(me);
    QWindow *window = topLevelAt(me->globalPos());
    if (!window)
        return;

    const QPoint pos = me->globalPos() - window->geometry().topLeft();
    const QPlatformDropQtResponse response =
            QWindowSystemInterface::handleDrop(window, drag()->mimeData(),pos, drag()->supportedActions());
    if (response.isAccepted()) {
        setExecutedDropAction(response.acceptedAction());
    } else {
        setExecutedDropAction(Qt::IgnoreAction);
    }
}