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(C++) QtExample12

 

QtQt CreatorLubuntuUbuntu

 

This Qt example shows how to create a custom QDialog with a custom slot, like this screenshot (png).

 

Technical facts

 

Application type(s)

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Qt project file: ./CppQtExample12/CppQtExample12.pro

 

exists(../../DesktopApplication.pri) {
  include(../../DesktopApplication.pri)
}
!exists(../../DesktopApplication.pri) {
  QT += core gui
  greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
  TEMPLATE = app

  CONFIG(debug, debug|release) {
    message(Debug mode)
  }

  CONFIG(release, debug|release) {
    message(Release mode)
    DEFINES += NDEBUG NTRACE_BILDERBIKKEL
  }

  QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra

  unix {
    QMAKE_CXXFLAGS += -Werror
  }
}

exists(../../Libraries/Boost.pri) {
  include(../../Libraries/Boost.pri)
}
!exists(../../Libraries/Boost.pri) {
  win32 {
    INCLUDEPATH += \
      ../../../Projects/Libraries/boost_1_55_0
  }
}

SOURCES += main.cpp

HEADERS += MyDialog.h

 

 

 

 

 

./CppQtExample12/MyDialog.h

 

#ifndef MYDIALOG_H
#define MYDIALOG_H

#include <QDialog>

class MyDialog : public QDialog
{
  Q_OBJECT

  public:
  MyDialog() : m_clicks(0) { }

  public slots:
    void buttonClicked()
    {
      ++m_clicks;
      QString s; s = s.number(m_clicks);
      this->setWindowTitle("Top button is clicked " + s + " times");
    }
  private:
    int m_clicks;
};

#endif // MYDIALOG_H

 

 

 

 

 

./CppQtExample12/main.cpp

 

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Weffc++"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#include <boost/scoped_ptr.hpp>

#include <QApplication>
#include <QDialog>
#include <QPushButton>
#include <QVBoxLayout>

#include "MyDialog.h"
#pragma GCC diagnostic pop

int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  boost::scoped_ptr<MyDialog> dialog(new MyDialog);
  boost::scoped_ptr<QVBoxLayout> layout(new QVBoxLayout);
  boost::scoped_ptr<QPushButton> button1(new QPushButton);
  boost::scoped_ptr<QPushButton> button2(new QPushButton);

  button1->setText("Count");
  button1->connect(
    button1.get(),SIGNAL(clicked()),
    dialog.get(),SLOT(buttonClicked()));
  button2->setText("Quit");
  button2->connect(
    button2.get(),SIGNAL(clicked()),
    dialog.get(),SLOT(close()));
  layout->addWidget(button1.get());
  layout->addWidget(button2.get());

  dialog->setGeometry(0,0,300,100);
  dialog->setWindowTitle("CppQtExample12");
  dialog->setLayout(layout.get());

  dialog->show();
  return a.exec();
}

 

 

 

 

 

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