QT mobile borderless window

After setting the QT design window to a borderless form, the window cannot be moved. I found some materials on the Internet, picked one suitable for myself, and now share it.

1. Define a public member variable QPoint dragPosition in wight.h;

2. Rewrite mouse down events and mouse movement events

Mouse down event

void Widget::mousePressEvent(QMouseEvent *event)

{

    if(event->button() == Qt::LeftButton)

    {

        dragPosition = event->globalPos()-frameGeometry().topLeft();

       // globalPos () gets the relative path of the root window, frameGeometry (). topLeft () gets the position of the upper left corner of the main window

        event-> accept (); // Mouse event is received by the system  

    }

}

Mouse click event

void Widget::mouseMoveEvent(QMouseEvent *event)

{

        this->move(event->globalPos()-dragPosition);

        event->accept();

}

Ok, it ’s so simple, right?

[Reference] http://www.xuebuyuan.com/1899289.html