Hi,
im playing alot with GraphicsView these days and I came accross a
following problem. I have a reimplemented QGraphicsView class where i
interecept the keyboardkeys:
protected void keyPressEvent(QKeyEvent event){
event.accept();
if(event.key()==Qt.Key.Key_Control.value())
this.setDragMode(DragMode.ScrollHandDrag);
super.keyPressEvent(event);
}
protected void keyReleaseEvent(QKeyEvent event){
event.accept();
if(event.key()==Qt.Key.Key_Control.value())
this.setDragMode(DragMode.NoDrag);
super.keyReleaseEvent(event);
}
I do this to achieve the following behaviour. When i press the ctrl key
i want the DragMode to change to ScrollHandDrag. Then, when I press the
left mouse key i can drag the viewport(scroll), when I'm done scrolling
i release the left mouse button afterwhich i release the ctrl key. All
works ok. But if I hit the following sequence of keys, the behavior will
break. I press the ctrl key and then press the left mouse key, drag the
view port and when I'm done I first release the ctrl key and then
release the left mouse key. When I then want to repeat such scroll
action the view port is drag as soon as I hit ctrl key, and not even
tougch the mouse keys... What is wrong? Some ideas?
Dawid
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