QDialog is a custom Qt dialog class for a dialog.

The code below, Qt example 11: creating a QDialog with QLayout on the fly shows how to create and show a QDialog on the fly (that is: without using the GUI designer). When using the Qt Creator GUI designer, QDialog can be selected as the base class of the custom GUI.


#include <boost/scoped_ptr.hpp>

#include <QtGui/QApplication>

#include <QDialog>

#include <QPushButton>

#include <QVBoxLayout>



int main(int argc, char *argv[])

{

  QApplication a(argc, argv);

  boost::scoped_ptr<QDialog> dialog(new QDialog);

  boost::scoped_ptr<QVBoxLayout> layout(new QVBoxLayout);

  boost::scoped_ptr<QPushButton> button1(new QPushButton);

  boost::scoped_ptr<QPushButton> button2(new QPushButton);



  //Cannot let button1 do anything fancy,

  //without creating a derived class from QDialog

  button1->setText("Nothing");

  button2->setText("Quit");

  button2->connect(

    button2.get(),SIGNAL(clicked()),

    dialog.get(),SLOT(close()));

  layout->addWidget(button1.get());

  layout->addWidget(button2.get());



  dialog->setGeometry(0,0,200,100);

  dialog->setWindowTitle("CppQtExample11");

  dialog->setLayout(layout.get());



  dialog->show();

  return a.exec();

}

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(C++) QDialog