46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
#include "mainwindow.h"
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#include "ui_mainwindow.h"
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#include <QMetaMethod>
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#include <QDebug>
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent)
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, ui(new Ui::MainWindow)
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{
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ui->setupUi(this);
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setWindowTitle(tr("信号和槽：Qt4 与 Qt5 用法"));
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ui->pushButton->setText(tr("关闭窗口"));
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// Qt4 方式
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// connect(ui->pushButton, SIGNAL(clicked()), this, SLOT(closeWindow())); // 式1
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// connect(ui->pushButton, SIGNAL(clicked()), SLOT(closeWindow())); // 式2
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// Qt5 方式
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connect(ui->pushButton, &QPushButton::clicked, this, &MainWindow::closeWindow); // 式3
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// connect(ui->pushButton, &QPushButton::clicked, [=](){ // 式4
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// close();
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// });
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// connect(ui->pushButton, ui->pushButton->metaObject()->method(34), this, this->metaObject()->method(25)); // 式5
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// for (int var = 0; var < metaObject()->methodCount(); ++var) {
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// QMetaMethod qm1 = ui->pushButton->metaObject()->method(var);
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// QMetaMethod qm2 = this->metaObject()->method(var);
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// qDebug()<<qm1.name() << qm2.name() << var <<"\n";
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// }
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}
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MainWindow::~MainWindow()
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{
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delete ui;
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}
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void MainWindow::closeWindow()
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{
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close();
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}
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