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Archived:Creating Context Menu from QPushButton

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{{Archived|timestamp=20120213032138|user=[[User:Hamishwillee|<br />----]]|[[:Category:Qt Quick|Qt Quick]] should be used for all UI development on mobile devices. The approach described in this article (based on {{Qapiname|QWidget}}) is deprecated.}}
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Revision as of 06:21, 13 February 2012

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.


Article Metadata
Code Example
Source file: Media:Button.zip
Tested with
Devices(s): Emulator/ N8
Compatibility
Platform(s): S60 3rd Edition, S60 5th Edition
Symbian
Article
Keywords: QPushButton
Created: mind_freak (27 Jun 2009)
Last edited: hamishwillee (13 Feb 2012)


Contents

Introduction

This article shows how to create a popup menu using "styled" push button in a QWidget based application.

The menu is launched using a QPushButton.


Class Definition

#include <QMainWindow>
#include "QHBoxLayout"
#include "QPushButton"
 
namespace Ui {
class Button;
}
 
class Button : public QMainWindow
{
Q_OBJECT
 
public:
explicit Button(QWidget *parent = 0);
~Button();
private:
QWidget* win;
QHBoxLayout *lay;
QMenu *menu;
QPushButton* but1;
};
 
#endif // BUTTON_H

We implement the Push Button in a class called Button, which we derive from QMainWindow. Here we are particularly interested the constructor, so lets discuss below about the constructor in the Class Implementation.


Class Implementation

#include "button.h"
Button::Button(QWidget *parent) :
QMainWindow(parent)
 
{
 
win=new QWidget(this);
win->resize(400,500);
lay=new QHBoxLayout(this);
menu=new QMenu(this);
menu->addMenu("Nokia");
menu->addMenu("N96");
menu->addMenu("N97");
but1=new QPushButton("Menu",this);
but1->setMenu(menu);
lay->addWidget(but1);
win->setLayout(lay);
win->setStyleSheet("* { background-color:rgb(125,100,50);color:rgb(200,150,100); padding: 7px}}");
}
 
Button::~Button()
{
 
}

In the constructor we create a QWidget (widget) of size 400x500 along with a QHBoxLayout (Layout). We create the QMenu (menu) and add items in the menu. Button have been created using QPushButton and add the button to the widget using addWidget() and then set the widget layout through setLayout() method . setStyleSheet() property holds the widget's style sheet.


Screenshot

Mybutton001001.jpg

Source Code

The full source code presented in this article is available here File:Button.zip


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