"invalid drawable" in Qt Simulator

[planetLars]

Hi,

what does "invalid drawable" as an application output in Qt Simulator indicate?

What can I do to get rid of this output or the source problem?

[kusumk]

Hi,

What are the QT widgets that you are using and how? Or some code snippet that gives this problem

[planetLars]

I only have a QGraphicsView put with Qt Designer next to the default MainWindow and centralWidget.

The View has every property at default except for: geometry, frameShape, frameShadow, lineWidth, verticalScrollbar and horizontalScrollbar which are put to 0, None or Off (geometry is at 0,40,360,600).
The other 2 have everything at default except geometry which are 0,0,360,640.

I use the view by showing a QGraphicsScene which has some items added via code, nothing else.

The error is output right after application launch.

[kusumk]

Hi,

I tried exactly as mentioned above and i am unable to reproduce the error -

My code looks like -

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this); // the ui form is designed to have a QGraphicsView put next to the default centralWidget in MainWindow with the properties exactly as mentioned in your post #2 except goemtry properties, those i have set in code below and not in the ui form.

setGeometry(0,0,360,640);

ui->graphicsView->setGeometry(0,40,360,600);

QGraphicsScene scene;

scene.setSceneRect( -100.0, -100.0, 200.0, 200.0 );

QGraphicsEllipseItem *item = new QGraphicsEllipseItem( 0, &scene );
item->setRect( -50.0, -50.0, 100.0, 100.0 );

ui->graphicsView->setScene(&scene);
}

main.cpp

just shows the mainwindow. So it works proper for me.

When i search for this error, i always see references to usage of QGLWidget have caused invalid drawable error sometimes. But could not find what could be the actual problem.
i have tested this on qtsimulator with QTSDK 1.1.4 on ubuntu. But the platform or sdk should nt be a problem.

[planetLars]

Thank you for your effort.

I reset every property of the View and the MainWindow, set the geometry by code and even out-commented the scene->addItem()s so I had a Scene with a empty View only (and my code now is basically the same as yours plus unused Item definitions and my Scene is a pointer). I get this result rendered but the application output still writes "invalid drawable".

I'm on Mac OS X Lion and my target is Simulator Qt for gcc with an N8 set as the rendering device with Nokia SDK 1.2

[kusumk]

Ok, somehow skeptic that this is a bug related to MAC though not sure. Can you please file a bug for it in QT bug reports - https://bugreports.qt-project.org/

[planetLars]

I wouldn't think of it too, however the lack of information about what "illegal drawable" indicates surely can get remedied. I filed a bug report.