QLabel *helpLabel = new QLabel(tr("Grab the window picker by clicking and holding down the mouse button, then drag it to the window of your choice and release it to capture."), this);
helpLabel->setMinimumWidth(400);
helpLabel->setMaximumWidth(400);
helpLabel->setWordWrap(true);
mWindowIndicator = new QRubberBand(QRubberBand::Rectangle, 0);