Qt 的事件过滤去的额使用:
想过滤掉自定义控件的某些事件,或者对自定义的某些空间感兴趣的时候,我想单独处理。在本例中想对PushButton 的控件的点击事件进行单独处理。(单击事件和双击事件)
// PushButton.h
#include <QPushButton>
class PushButton : public QPushButton
{
Q_OBJECT
public:
explicit PushButton(QWidget *parent = 0);
void mousePressEvent(QMouseEvent *e);
bool event(QEvent *e);
signals:
public slots:
};
//PushButton.cpp
#include "pushbutton.h"
#include <QMouseEvent>
#include <QDebug>
#include <QEvent>
PushButton::PushButton(QWidget *parent) : QPushButton(parent)
{
}
void PushButton::mousePressEvent(QMouseEvent *e)
{
qDebug()<< endl << "PushButton::mousePressEvent" << endl;
}
bool PushButton::event(QEvent *e)
{
if(e->type() == QEvent::MouseButtonPress|| e->type() == QEvent::MouseButtonDblClick)
{
QMouseEvent *event = dynamic_cast<QMouseEvent*>(e);
if(event->button() == Qt::LeftButton)
{