I only replaced Line #110 ( drag->setPixmap(pixmap); ) with my code
Qt Code:
  1. {
  2. static unsigned char drag_bits[] = { ...};
  3. QBitmap pixmap = QBitmap::fromData( QSize(20, 20), drag_bits, QImage::Format_Mono);
  4. pixmap.setMask(QPixmap::grabWidget(this).createHeuristicMask(true));
  5. drag->setPixmap((QPixmap)pixmap);
  6. }
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