運行截圖如下：

代碼如下：

widget.h

#ifndef WIDGET_H #define WIDGET_H#include <QWidget>namespace Ui { class Widget; }class Widget : public QWidget {Q_OBJECTpublic:explicit Widget(QWidget *parent = 0);bool eventFilter(QObject *watched, QEvent *event);~Widget();private:Ui::Widget *ui; };#endif // WIDGET_H

widget.cpp

#include "widget.h" #include "ui_widget.h" #include <QMouseEvent> #include <QDebug>Widget::Widget(QWidget *parent) :QWidget(parent),ui(new Ui::Widget) {ui->setupUi(this);ui->blueLabel->installEventFilter(this);ui->redLabel->installEventFilter(this);ui->greenLabel->installEventFilter(this);this->setWindowTitle("CSDN IT1995"); }bool Widget::eventFilter(QObject *watched, QEvent *event){if(watched==ui->blueLabel){QMouseEvent *mouseEvent=static_cast<QMouseEvent*>(event);if(mouseEvent->button()==Qt::RightButton){ui->blueLabel->setStyleSheet("color:blue");}if(mouseEvent->button()==Qt::LeftButton){ui->blueLabel->setStyleSheet("color:black");}}if(watched==ui->redLabel){QMouseEvent *mouseEvent=static_cast<QMouseEvent*>(event);if(mouseEvent->button()==Qt::RightButton){ui->redLabel->setStyleSheet("color:red");}if(mouseEvent->button()==Qt::LeftButton){ui->redLabel->setStyleSheet("color:black");}}if(watched==ui->greenLabel){QMouseEvent *mouseEvent=static_cast<QMouseEvent*>(event);if(mouseEvent->button()==Qt::RightButton){ui->greenLabel->setStyleSheet("color:green");}if(mouseEvent->button()==Qt::LeftButton){ui->greenLabel->setStyleSheet("color:black");}}return false; }Widget::~Widget() {delete ui; }

main.cpp

#include "widget.h" #include <QApplication>int main(int argc, char *argv[]) {QApplication a(argc, argv);Widget w;w.show();return a.exec(); }

總結

以上是生活随笔為你收集整理的Qt工作笔记-时QLabel具有点击事件（使用EventFilter）的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。