QT4 Drag Window Without Title Bar

Question

The application I\'m working on has a custom UI that required me to remove the title bar from the main window. Unfortunately, I can\'t figure out how to make it so I can mo

Answer 1

You should try this instead

class MyWidget : public QMainWindow
{
protected:
    void mouseMoveEvent(QMouseEvent* event);
    void mousePressEvent(QMouseEvent* event);
    void mouseReleaseEvent(QMouseEvent* event);
private:
    QPoint mLastMousePosition;
    bool mMoving;
}
/// Source:
void MyWidget::mousePressEvent(QMouseEvent* event)
{
    if(event->button() == Qt::LeftButton)
    {
        mMoving = true;
        mLastMousePosition = event->pos();
    }
}

void MyWidget::mouseMoveEvent(QMouseEvent* event)
{
    if( event->buttons().testFlag(Qt::LeftButton) && mMoving)
    {
        this->move(this->pos() + (event->pos() - mLastMousePosition));
    }
}

void MyWidget::mouseReleaseEvent(QMouseEvent* event)
{
    if(event->button() == Qt::LeftButton)
    {
        mMoving = false;
    }
}