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Archived:Creating a Digital Clock QWidget

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[[Category:Qt]]
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{{Archived|timestamp=20120723122421|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 (using C++ for the Qt app UI) is deprecated.}}
__NOTOC__
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[[Category:Qt C++ UI]]
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|id=...
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|platform=S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition
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|category=Qt
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|subcategory=Application
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|creationdate=17 February 2009
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|keywords=QLCDNumber,QTimer,QString
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|sdk=<!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) -->
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==Overview==
 
==Overview==
  
This code snippet demonstrates how to create a simple digital clock widget in [[Qt for S60]].
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This code snippet demonstrates how to create a simple digital clock widget in [[Qt overview]].
  
 
==Preconditions==
 
==Preconditions==
  
* Install the [[Nokia Qt SDK]]
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* Install the [[Qt SDK]]
  
 
== Source File ==
 
== Source File ==
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== Screenshot==
 
== Screenshot==
[[Image:Digitalclocklarge.jpg]]  [[Category:Code Examples]][[Category:MeeGo Harmattan]] [[Category:Symbian]]
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[[File:Digitalclocklarge.jpg]]  [[Category:Code Snippet]][[Category:MeeGo Harmattan]] [[Category:Symbian]]

Revision as of 15:24, 23 July 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 (using C++ for the Qt app UI) is deprecated.

Article Metadata
Tested with
Devices(s): Emulator
Compatibility
Platform(s): S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition
Symbian
Article
Keywords: QLCDNumber,QTimer,QString
Created: james1980 (17 Feb 2009)
Last edited: hamishwillee (23 Jul 2012)


Contents

Overview

This code snippet demonstrates how to create a simple digital clock widget in Qt overview.

Preconditions

Source File

#include <QtGui>
 
#include "digitalclock.h"
 
 
DigitalClock::DigitalClock(QWidget *parent)
: QLCDNumber(parent)
{
setSegmentStyle(Filled);
setNumDigits(8);
setStyleSheet("* { background-color:rgb(199,147,88);color:rgb(255,255,255); padding: 7px}}");
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(displayTime()));
timer->start(1000);
 
displayTime();
 
setWindowTitle(tr("Digital Clock"));
resize(300, 120);
}
Digital::~Digital()
{
//parent object will destroy timer automatically.
}
 
 
 
void DigitalClock::displayTime()
 
{
QTime time = QTime::currentTime();
QString text = time.toString("hh:mm:ss");
if ((time.second() % 2) == 0)
{text[2] = ' ';
text[5] = ' ';
}
display(text);
}

Header File

#ifndef DIGITALCLOCK_H
#define DIGITALCLOCK_H
 
#include <QLCDNumber>
 
 
class DigitalClock : public QLCDNumber
{
Q_OBJECT
 
public:
DigitalClock(QWidget *parent = 0);
 
private slots:
void displayTime();
};
 
 
#endif

Screenshot

Digitalclocklarge.jpg

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