Qt 4: Move window without title bar
Try this to move the window manually: void PopupWindow::mousePressEvent(QMouseEvent *event){ mpos = event->pos(); } void PopupWindow::mouseMoveEvent(QMouseEvent *event){ if (event->buttons() & Qt::LeftButton) { QPoint diff = event->pos() – mpos; QPoint newpos = this->pos() + diff; this->move(newpos); } } And declare QPoint mpos somewhere.