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Qt实现窗口拖拽
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QT窗口默认可以直接鼠标点住窗口的标题栏实现拖拽移动，如果需要鼠标点住窗口客户区域实现窗口的拖拽移动 6437 ，可以通过QMouseEvent事件来实现。
.h文件
#include <QWidget>
class QMouseEvent;
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = 0);
~Widget();
protected:
//拖拽窗口
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
private:
bool m_bDrag;
QPoint mouseStartPoint;
QPoint windowTopLeftPoint;
};.cpp文件
//拖拽操作
void Widget::mousePressEvent(QMouseEvent *event)
{
if(event->button() == Qt::LeftButton)
{
m_bDrag = true;
//获得鼠标的初始位置
mouseStartPoint = event->globalPos();
//mouseStartPoint = event->pos();
//获得窗口的初始位置
windowTopLeftPoint = this->frameGeometry().topLeft();
}
}
void Widget::mouseMoveEvent(QMouseEvent *event)
{
if(m_bDrag)
{
//获得鼠标移动的距离
QPoint distance = event->globalPos() - mouseStartPoint;
//QPoint distance = event->pos() - mouseStartPoint;
//改变窗口的位置
this->move(windowTopLeftPoint + distance);
}
}
void Widget::mouseReleaseEvent(QMouseEvent *event)
{
if(event->button() == Qt::LeftButton)
{
m_bDrag = false;
}
}blog link Qt实现窗口拖拽