[Solved] Cannot include QSystemDeviceInfo

spode

how to include QSystemDeviceInfo in Qt 4.7.3? i am using windows 7 and doing a mobile project

TobbY

"Your text to link here...":http://doc.qt.nokia.com/qtmobility-1.2/qsystemdeviceinfo.html

ZapB

Add the following to your .pro file:

@
CONFIG += mobility
MOBILITY += systeminfo
@

and re-run qmake.

spode

and what about QtQuick project?

thisisbhaskar

I gave a comment on DevNet Documentation review that each API documentation should also carry any .pro file changes that are required to include that header file and use it inside the code. That should remove lot of confusions.

thisisbhaskar

[quote author="spode" date="1310117532"]and what about QtQuick project?[/quote]

For Qt Quick, above mentioned .pro file changes are good enough.

And you need to have @import QtMobility.systeminfo 1.1@ in your .qml file

And DeviceInfo is the qml element name.

ZapB

They are listed. See this "quickstart guide":http://doc.qt.nokia.com/qtmobility-1.2/quickstart.html for mobility.

@spode What do you mean? You can still use C++ in a QtQuick project. If you wan tto display it you just need to bind to the respective properties and possibly expose the info you need as properties if they are not already available.

ZapB

@Vijay Ah that's even better then. I have not looked into using mobility directly in QML yet.

changsheng230

@
import Qt 4.7
import QtMobility.systeminfo 1.1

Rectangle{
....

DeviceInfo {
    id: deviceinfo;
    //        onBatteryStatusChanged : doBatteryStatusChange(status);
    onPowerStateChanged : getPowerState(/*powerState*/);
    onBatteryLevelChanged: doBatteryLevelChange(level)
    property int battlevel: batteryLevel;

    monitorBatteryLevelChanges: true
    monitorBatteryStatusChanges: true
    monitorPowerStateChanges: true
    monitorCurrentProfileChanges: true
    monitorBluetoothStateChanges: true
}
...

}
@

spode

0k, but what about .cpp? why can not i include QSystemDeviceInfo.h?

ZapB

Have you tried:

@
#include <QSystemDeviceInfo>
@

ie without the ".h" suffix. Can you post the exact command line passed to the compiler and error msg please? That way we can see if it has the correct -I arguments or not.

spode

on .cpp:
error: QSystemDeviceInfo: No such file or directory
althought i am using windows 7 and Qt 4.7.3

ZapB

And the command line passed to the compiler please? Which target are you trying to build for?

TobbY

"Try this...":http://www.developer.nokia.com/Community/Wiki/Working_with_QSystemDeviceInfo_-System_Information_API-_Part_1

spode

all right. perhaps it was because i wrote "mobility" instead of "MOBILITY" in CONFIG and did not write "symbian:TARGET.CAPABILITY = ReadDeviceData" in .pro file.
thank everybody!

ZapB

Yes the MOBILITY variable in the .pro file needs to be in uppercase. The missing symbian capabilities flag would have caused errors later on in the compilation (or maybe at runtime).

Glad to see you hav eit working now. Good luck with the rest of your project.

spode

thank you! :)

rishygupta

I am making a desktop app and not able to include QSystemDeviceInfo all the above steps i have tried but it dosnt work its giving error no such QSystemDeviceInfo file.i m using qt 4.7

spode

Did you try to reinstall qt?

rishygupta

ya i have tried in 3 system but it didnt worked i am compiling it by desktop compiler not Symbian or etc...