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Archived:Creating a Digital Clock QWidget

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[[Category:Qt for Symbian]][[Category:Code Examples]]
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{{Archived|timestamp=20120723122421|user=[[User:Hamishwillee|&lt;br /&gt;----]]|[[: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]]
__NOEDITSECTION__
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{{ArticleMetaData <!-- v1.2 -->
{{CodeSnippet
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|sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) -->
|id=...
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|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
|platform=S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition
+
 
|devices= Emulator
 
|devices= Emulator
|category=Qt for Symbian
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|sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) -->
|subcategory=Application
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|platform= S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition
|creationdate=17 February 2009
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|devicecompatability= <!-- Compatible devices (e.g.: All* (must have GPS) ) -->
|keywords=QLCDNumber,QTimer,QString
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|dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
 +
|signing= <!-- Empty or one of Self-Signed, DevCert, Manufacturer -->
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|capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. -->
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|keywords= QLCDNumber,QTimer,QString
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|creationdate= 17 February 2009
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|author= [[User:James1980]]
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|subcategory= Application
 
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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==
  
* Download and Install latest version [[Qt for Symbian - Installation packages]] which has links on how to install the latest version
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* Install the [[Qt SDK]]
 
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== Source File ==
 
== Source File ==
  
<code cpp>
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<code cpp-qt>
  
 
#include <QtGui>
 
#include <QtGui>
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== Header File ==
 
== Header File ==
  
<code cpp>
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<code cpp-qt>
  
 
#ifndef DIGITALCLOCK_H
 
#ifndef DIGITALCLOCK_H
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== Screenshot==
 
== Screenshot==
[[Image:Digitalclocklarge.jpg]] [[Category:Qt]] [[Category:Symbian]]
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[[File:Digitalclocklarge.jpg]] [[Category:Code Snippet]][[Category:MeeGo Harmattan]] [[Category:Symbian]]

Latest revision as of 04:14, 11 October 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 (11 Oct 2012)


Contents

[edit] Overview

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

[edit] Preconditions

[edit] 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);
}

[edit] 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

[edit] Screenshot

Digitalclocklarge.jpg

This page was last modified on 11 October 2012, at 04:14.
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