如何在QGraphicsView上添加“on click event”

Question

我在Designer中添加了一个QGraphicsView到我的ui表单。现在我想在这个小部件上添加一个“on click event”。

Answer 1

您是否可以继承QGraphicsView？如果是这样，你可以用这样的东西轻松处理案件：

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.