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Super Contributor
Posts: 253
Registered: ‎08-19-2010
My Device: BB10, Playbook, 9900, 9800, 9700, 9550, 9530, 9500, 8700.
My Carrier: TT
Accepted Solution

How to combine bb::cascades and bb::device


Want to get screen height and width for .qml.



When I try to get screen width, .qml code shows error.


When I try to use .qml, screen properties shows error.



using namespace bb::cascades;
using namespace bb::device;??


int main(int argc, char **argv)
// this is where the server is started etc
Application app(argc, argv);

// localization support
QTranslator translator;
QString locale_string = QLocale().name();
QString filename =****
if (translator.load(filename, "app/native/qm")) {
app.installTranslator( &translator );

// Load the UI description from main.qml
QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(&app);

DisplayInfo display;
int width = display.pixelSize().width();
int height = display.pixelSize().height();


Does anyone know how to use device and cascade in one project.


Thanks your attention.


-Fight with BB10
Posts: 571
Registered: ‎06-25-2010
My Device: Z10
My Carrier: Vodafone

Re: How to combine bb::cascades and bb::device



I'm not clear exactly where you are seeing errors.


However the following code works for me:


// Default empty project template
#include "Test.hpp"

#include <bb/cascades/Application>
#include <bb/cascades/QmlDocument>
#include <bb/cascades/AbstractPane>
#include <bb/device/DisplayInfo.hpp>

using namespace bb::cascades;
using namespace bb::device;

Test::Test(bb::cascades::Application *app)
: QObject(app)

    DisplayInfo display;
    qDebug() << "XXXX display id is " << display.displayId();
    qDebug() << "XXXX display name is " << display.displayName();
    qDebug() << "XXXX display size is " << display.pixelSize().width() << ", " << display.pixelSize().height();

    // create scene document from main.qml asset
    // set parent to created document to ensure it exists for the whole application lifetime
    QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);

    // create root object for the UI
    AbstractPane *root = qml->createRootObject<AbstractPane>();
    // set created root object as a scene

 Make sure you add the following line to your project's .pro file 


LIBS += -lbbdevice


per the documentation: http://developer/cascades/reference/bb__device__displayinfo.html


Hope this helps!



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Super Contributor
Posts: 253
Registered: ‎08-19-2010
My Device: BB10, Playbook, 9900, 9800, 9700, 9550, 9530, 9500, 8700.
My Carrier: TT

Re: How to combine bb::cascades and bb::device

LIBS += -lbbdevice is my issue. 


After I add the LIBS += -lbbdevice under HEADERS += ../src/*.hpp ../src/*.h for the .pro file.

No warning comes out.


Thank you a lot, Solved it.





-Fight with BB10