qt - 如何将“点击事件”添加到 QGraphicsView

Question

我在 Designer 的 ui 表单中添加了一个 QGraphicsView。现在我想向这个小部件添加一个“点击事件”。

Answer 1

Is it possible for you to subclass a QGraphicsView? If so you could easily handle the cases with something like that:

MyQGraphicsView.h

class MyQGraphicsView : public QGraphicsView
{
    void enterEvent(QEvent *event);
    void leaveEvent(QEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void wheelEvent(QWheelEvent *event);
}

MyQGraphicsView.cpp

void MyQGraphicsView::mouseMoveEvent(QMouseEvent *event)
{
    // Do what you want
}

//Do the same with all the events.