Cascades Development

[dridk]

Today, I just realize that pure Qt is completly working on QNX Momentics IDE.... So, If you want to make an application without cascade UI and draw all by yourself , ( for games it's a good idea) , use QGraphicsView/QGraphicsScene system.

Just create a cascade project , and replace the main contain by pure Qt code... 

[dridk]

Now, use the standard QML ... And it works !! Seriously, I was beleiving that Qt gui module was disable.. But no

[samir22]

I just tried the following code:

#include <QtGui/QApplication>
#include<QGraphicsView>
#include<QGraphicsScene>


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QGraphicsView * view;
    QGraphicsScene * scene;

    view->setScene(scene);
    view->showFullScreen();

    return a.exec();
}

The app builds and compiles but on the Dev Alpha B device, does not launch. Any clues?

[kosh0r]

you did not initialize the view and the scene, so you are trying to access Null-Pointers

QGraphicsView* view; -> QGraphicsView * view = new QGraphicsView()

[kosh0r]

try this in ypour main-function

QApplicationapp(argc, argv);

// localization support

QTranslatortranslator;

QString locale_string = QLocale().name();

QString filename = QString( "YOUR_APP_NAME_%1" ).arg( locale_string );

if (translator.load(filename, "app/native/qm")) {

app.installTranslator( &translator );

}

QGraphicsView * view = newQGraphicsView();

QGraphicsScene * scene = newQGraphicsScene();

view->setScene(scene);

view->showFullScreen();

　

QLabel* test = newQLabel();

test->setText("Hello World");

scene->addWidget(test);

app.exec();

includes are:

#include<QtGui/QApplication>

#include<QtGui/QLabel>

#include<QLocale>

#include<QTranslator>

#include<Qt/qdeclarativedebug.h>