feat: Q_OBJECT

QtSigSlot/QtSigSlot.pro

@@ -0,0 +1,24 @@
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+CONFIG += c++11
+
+# You can make your code fail to compile if it uses deprecated APIs.
+# In order to do so, uncomment the following line.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+SOURCES += \
+    main.cpp \
+    mainwindow.cpp
+
+HEADERS += \
+    mainwindow.h
+
+FORMS += \
+    mainwindow.ui
+
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target

QtSigSlot/main.cpp

@@ -0,0 +1,11 @@
+#include "mainwindow.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    MainWindow w;
+    w.show();
+    return a.exec();
+}

QtSigSlot/mainwindow.cpp

@@ -0,0 +1,45 @@
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+#include <QMetaMethod>
+#include <QDebug>
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::MainWindow)
+{
+    ui->setupUi(this);
+
+    setWindowTitle(tr("信号和槽：Qt4 与 Qt5 用法"));
+    ui->pushButton->setText(tr("关闭窗口"));
+
+    // Qt4 方式
+//    connect(ui->pushButton, SIGNAL(clicked()), this, SLOT(closeWindow()));  // 式1
+//    connect(ui->pushButton, SIGNAL(clicked()), SLOT(closeWindow()));  // 式2
+
+    // Qt5 方式
+    connect(ui->pushButton, &QPushButton::clicked, this, &MainWindow::closeWindow);  // 式3
+//    connect(ui->pushButton, &QPushButton::clicked, [=](){  // 式4
+//        close();
+//    });
+//    connect(ui->pushButton, ui->pushButton->metaObject()->method(34), this, this->metaObject()->method(25));  // 式5
+
+
+
+//    for (int var = 0; var < metaObject()->methodCount(); ++var) {
+//        QMetaMethod qm1 = ui->pushButton->metaObject()->method(var);
+//        QMetaMethod qm2 = this->metaObject()->method(var);
+//        qDebug()<<qm1.name() << qm2.name() << var <<"\n";
+//    }
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}
+
+void MainWindow::closeWindow()
+{
+    close();
+}
+

QtSigSlot/mainwindow.h

@@ -0,0 +1,24 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class MainWindow; }
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+    ~MainWindow();
+
+private slots:
+    void closeWindow();
+
+private:
+    Ui::MainWindow *ui;
+};
+#endif // MAINWINDOW_H

QtSigSlot/mainwindow.ui

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>MainWindow</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <widget class="QPushButton" name="pushButton">
+    <property name="geometry">
+     <rect>
+      <x>240</x>
+      <y>110</y>
+      <width>141</width>
+      <height>71</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>关闭窗口</string>
+    </property>
+   </widget>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>800</width>
+     <height>21</height>
+    </rect>
+   </property>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>