Bug#531072: libqt4-gui: Widget only receives QTabletEvent if it is top-level widget

["Christian Pulvermacher" <pulvermacher@gmx.de>]

Package: libqt4-gui
Version: 4.5.1-2
Severity: normal


When creating a widget via

  class Test : public QWidget {
    Q_OBJECT
  public:
    Test(QWidget *parent = 0) : QWidget(parent) {}
  protected:
    void tabletEvent(QTabletEvent*) { std::cout << "got event\n";}
  };

  Test *t = new Test;
  test->show();

it correctly receives tablet events.
However, when I do:

  QWidget *w = new QWidget;
  test->setParent(w);
  w->show();

my tabletEvent() never gets called. Other event types don't seem to be  
affected.

This also breaks the widgets/tablet example in the qt4-demos package.

Regards,
- Christian