Demonstrates disconnecting

Author: mttwc

HelloQt.pro

@@ -6,9 +6,9 @@
 QT += widgets
 
 SOURCES = src/main.cpp \
-          src/move_demonstration.cpp \
+          src/disconnect_demonstration.cpp \
 
-HEADERS = src/move_demonstration.h
+HEADERS = src/disconnect_demonstration.h
 
 CONFIG -= app_bundle
 

src/disconnect_demonstration.cpp

@@ -0,0 +1,39 @@
+#include <QTextStream>
+#include <QCheckBox>
+#include <QHBoxLayout>
+#include "disconnect_demonstration.h"
+
+DisconnectDemonstration::DisconnectDemonstration(QWidget *parent)
+    : QWidget(parent)
+{
+    QHBoxLayout *hbox = new QHBoxLayout(this);
+    hbox->setSpacing(5);
+    
+    clickBtn = new QPushButton("Click", this);
+    hbox->addWidget(clickBtn, 0, Qt::AlignLeft | Qt::AlignTop);
+    
+    QCheckBox *cb = new QCheckBox("Connect", this);
+    cb->setCheckState(Qt::Checked);
+    hbox->addWidget(cb, 0, Qt::AlignLeft | Qt::AlignTop);
+    
+    connect(clickBtn, &QPushButton::clicked, this, &DisconnectDemonstration::onClick);
+    connect(cb, &QCheckBox::stateChanged, this, &DisconnectDemonstration::onCheck); 
+}
+
+void DisconnectDemonstration::onClick()
+{
+    QTextStream out(stdout);
+    out << "Button clicked" << endl;
+}
+
+void DisconnectDemonstration::onCheck(int state)
+{
+    if (state == Qt::Checked)
+    {
+        connect(clickBtn, &QPushButton::clicked, this, &DisconnectDemonstration::onClick);
+    }
+    else
+    {
+        disconnect(clickBtn, &QPushButton::clicked, this, &DisconnectDemonstration::onClick);
+    }
+}

src/disconnect_demonstration.h

@@ -0,0 +1,22 @@
+#ifndef DISCONNECT_DEMONSTRATION_H
+#define DISCONNECT_DEMONSTRATION_H
+
+#include <QWidget>
+#include <QPushButton>
+
+class DisconnectDemonstration : public QWidget
+{
+    Q_OBJECT
+    
+    public:
+        DisconnectDemonstration(QWidget *parent = 0);
+        
+    private slots:
+        void onClick();
+        void onCheck(int);
+        
+    private:
+        QPushButton *clickBtn;
+};
+
+#endif

src/main.cpp

@@ -1,15 +1,15 @@
 #include <QApplication>
 #include <QWidget>
-#include "move_demonstration.h"
+#include "disconnect_demonstration.h"
 
 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
 
-    MoveDemonstration window;
+    DisconnectDemonstration window;
 
     window.resize(250, 150);
-    window.setWindowTitle("Move Event Demonstration");
+    window.setWindowTitle("Disconnect Demonstration");
     window.show();
 
     return app.exec();