Launching a native application from Qt
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| − | [[Category:Qt]][[Category: | + | [[Category:Qt]][[Category:Code Snippet]][[Category:MeeGo Harmattan]][[Category:Symbian]][[Category:General Programming]] |
| + | {{Abstract|This code snippet shows how to launch a native application from Qt. The example has been tested launching the Symbian camera application on the Symbian platform, but the code should work generically.}} | ||
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{{ArticleMetaData <!-- v1.2 --> | {{ArticleMetaData <!-- v1.2 --> | ||
|sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) --> | |sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) --> | ||
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==Header== | ==Header== | ||
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==Postconditions== | ==Postconditions== | ||
| − | The Symbian native camera is started. | + | The Symbian native camera is started. |
<!-- Translation --> [[zh-hans:如何让S60 Qt启动一个程序]] | <!-- Translation --> [[zh-hans:如何让S60 Qt启动一个程序]] | ||
Latest revision as of 09:06, 17 October 2012
This code snippet shows how to launch a native application from Qt. The example has been tested launching the Symbian camera application on the Symbian platform, but the code should work generically.
Article Metadata
Tested with
SDK: Qt SDK
Devices(s): Nokia 5800 XpressMusic
Compatibility
Platform(s): S60 3rd Edition, FP1, FP2
S60 5th Edition
S60 5th Edition
Article
Keywords: QProcess
Created: tepaa
(29 Apr 2009)
Last edited: hamishwillee
(17 Oct 2012)
Header
The ProcessHandler starts the process and listens for its states.
#include <QObject>
#include <QProcess>
class ProcessHandler : public QObject
{
Q_OBJECT
public:
ProcessHandler(QObject *parent = 0);
~ProcessHandler();
public:
void StartCameraApp();
public Q_SLOTS:
void stateChanged(QProcess::ProcessState state);
void error(QProcess::ProcessError error);
private:
QProcess* process;
};
Source
Create QProcess and start listening for process state changes.
Class descruction:
ProcessHandler::~ProcessHandler()
{
if (process->state() != QProcess::NotRunning)
{
// Close process if it is running
process->close();
}
}
Start the Symbian native camera Cameraapp.exe:
void ProcessHandler::StartCameraApp()
{
QString program = "Cameraapp.exe";
process->start(program);
}
QProcess signals the error to the error slot:
QProcess signals the process state changes to the stateChanged slot.
Postconditions
The Symbian native camera is started.
