Archived:How to display a widget with normal and maximize size in Qt

From Nokia Developer Wiki
Jump to: navigation, search

Archived.pngArchived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

Qt Quick should be used for all UI development on mobile devices. The approach described in this article (based on QWidget) is deprecated.

In this article we will create three button widgets with QPushButton and display two of them in Normal and Maximum size. QWidget::showNormal () slot is used to restores the widget after it has been maximized or minimized and QWidget::showMinimized () is used to shows the widget minimized. The third button Exit calls quit() slot to exit out from the application.

Article Metadata
Tested with
Devices(s): Emulator
Platform(s): S60 3rd Edition, S60 5th Edition
Keywords: QVBoxLayout,QHBoxLayout
Created: james1980 (28 Dec 2008)
Last edited: hamishwillee (11 Oct 2012)


#include <QApplication>
#include <QPushButton>
#include <QVBoxLayout>
int main(int argc, char *argv[])
QApplication app(argc, argv);
// win is the top level widget
QWidget win;
QVBoxLayout* layout = new QVBoxLayout(&win);
// This button show the top level widget in a normal size
QPushButton* normalSizeButton = new QPushButton("Normal size");
QObject::connect(normalSizeButton, SIGNAL(clicked()), &win, SLOT(showNormal()));
// This button maximize the widget size
QPushButton* maximzeButton = new QPushButton("Maximize");
QObject::connect(maximzeButton, SIGNAL(clicked()), &win, SLOT(showMaximized()));
// This button exit the application
QPushButton* exitButton = new QPushButton("Exit");
QObject::connect(exitButton, SIGNAL(clicked()), &app, SLOT(quit()));
win.show(); // show the top level widget
return app.exec(); // start the event loop

Output after clicking on Normal Size


Output after clicking on maximize


This page was last modified on 11 October 2012, at 04:13.
72 page views in the last 30 days.

Was this page helpful?

Your feedback about this content is important. Let us know what you think.


Thank you!

We appreciate your feedback.