[Qt-qml] Detecting platform in QML

[Jonathan Zhong]

Not sure if this is related. Sometimes I need to get values of system 
environment variables, so I have implemented a custom QML element called 
"System". In my C++ code:

class System : public QObject
{
     Q_OBJECT
//...
public:
     Q_INVOKABLE QString getenv(const QString envVarName) const; // 
Within this function I call the system getenv() function.
};

In my QML code:

import <My QML extension plugin> 1.0

System {
     id: system
}

// ...

var evValue = system.getenv("PWD");
console.log("...PWD = " + evValue);

The answer is "/home/jonathanz" on Linux, and "C:\users\jonathanz" on 
Windows, which may also indicate the platform I'm working on.

- jonathanz

On 06/23/2011 06:55 AM, Pelle Johnsen wrote:
> Guess I'll map it from C++, but would be good to have access to these 
> kind of system properties (and maybe also environment vars) from QML 
> in a later version.
>
>  -Pelle
>
> On Thu, Jun 23, 2011 at 1:10 PM, <jens.bache-wiig at nokia.com 
> <mailto:jens.bache-wiig at nokia.com>> wrote:
>
>     Not a silly question but I am afraid the answer is currently no.
>     The QML language itself doest not provide you this functionality
>     but it is possible to write a plugin in C++ that can provide it
>     for you.
>
>     Alternatively the Qt Quick desktop components provide a QStyleItem
>     that can give you the currently running desktop style as a
>     property. (as in "windows", "mac", "gtk", "oxygen")
>
>     http://labs.qt.nokia.com/2011/03/10/qml-components-for-desktop/
>
>     Regards,
>     Jens Bache-Wiig
>
>
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