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  1. Qt
  2. QTBUG-35117

[regression from qt4] Can't mock drag-and-drop interaction without involving system's cursor

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P3: Somewhat important P3: Somewhat important
    • None
    • 5.1.0
    • GUI: Drag and Drop, Testing: qtestlib
    • None
    • Fedora 18 and other platforms

      Sequence to reproduce:
      Post MouseButtonPress event (with correct localPos and globalPos) to draggable widget. Dragging mode should be initiated with start position in event->globalPos(). This works as expected in Qt4.8.
      In Qt5.1 dragging mode initiated in position of system cursor - wrong behavior, I guess.

      Seems to be issue in:

      void QSimpleDrag::startDrag()
{
    QBasicDrag::startDrag();
    m_current_window = topLevelAt(QCursor::pos());
    if (m_current_window) {
        QPlatformDragQtResponse response = QWindowSystemInterface::handleDrag(m_current_window, drag()->mimeData(), QCursor::pos(), drag()->supportedActions());
        setCanDrop(response.isAccepted());
        updateCursor(response.acceptedAction());
    } else {
        setCanDrop(false);
        updateCursor(Qt::IgnoreAction);
    }
    setExecutedDropAction(Qt::IgnoreAction);
}

      QWindowSystemInterface::handleDrag is passed with QCursor::pos() but there should be globalPos() from event that initiate dragging.

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            Unassigned Unassigned
            andriy.prystupa Andriy Prystupa
            Veli-Pekka Heinonen Veli-Pekka Heinonen
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              Created:
              Updated:

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