QT事件处理系统之三：子类化QPushButton后，对事件进行相应处理后，自定义按钮无法发出clicked信号的问题

#include "SelfButton.h" #include <QDebug> #include <QEvent> #include <QMouseEvent> SelfButton::SelfButton(QWidget* parent) :QPushButton(parent) {} void SelfButton::mousePressEvent(QMouseEvent *event) { qDebug() << "[SelfButton]: enter in SelfButton::mousePressEvent()..."; QPushButton::mousePressEvent(event); // 否则无法产生clicked信号 event->ignore(); // 忽略, 继续向上传递(默认是accept(), 不会继续向上传递) } bool SelfButton::event(QEvent *e) { if(e->type() == QEvent::MouseButtonPress) { qDebug() << "[SelfButton]: enter in SelfButton::event()..."; return QPushButton::event(e); } return QPushButton::event(e); }