Multiple scenes in one QGraphicview

[Ramkumar Mohan]

@JonB Ok,

Header File ,

MainWindow.h

class MainWindow : public QMainWindow
{
Q_OBJECT

QGraphicsScene m_Scene;
QGraphicsScene m_Scene1;

}

CPP File ,

MainWindow.CPP
int check =2 ;
for(int i=0 ; i<check ;i++)
{
if(i==0)

                 {
                     ui->graphicsView->setFixedSize(420 , 580);
                     ui->graphicsView->setSceneRect(50,0,215,110);
                     QThread::msleep(500);
                     ui->graphicsView->setScene(&m_Scene);
                     m_Code= new Code128Item();
                     m_Code->setWidth(35);
                     m_Code->setHeight(70);
                     m_Code->setPos(50,0);
                     m_Scene.addItem( m_Code);
                     m_Scene.update();
                     m_Code->update();
                     m_Code->setText(Data);
                     m_Code->update();
                     m_Scene.update();
                     ui->graphicsView->setScene(&m_Scene);
                     ui->graphicsView->update();
                 } 

else if(i==1)
{

            ui->graphicsView->setFixedSize(420 , 580);
            ui->graphicsView->setSceneRect(200,0,215,110);
            QThread::msleep(500);

            ui->graphicsView->setScene(&m_Scene1);
            m_Code->setWidth(35);
            m_Code->setHeight(70);
            m_Code->setPos(200,0);
            m_Scene1.addItem(m_Code);
            m_Scene1.update();
            m_Code->update();
            m_Code->setText("Data1");
            m_Code->update();
            m_Scene1.update();
            ui->graphicsView->setScene(&m_Scene1);
            ui->graphicsView->update();          

}
}

I wrote This code ,

In this the text named data should be placed at (0,0) position, similarly the text named Data1 should be placed at (200,0) position. I don't know what is wrong with this code.

[Asperamanca]

@Ramkumar-Mohan
I don't see what "m_Code" is, but why not simply add two texts to one scene?

[Ramkumar Mohan]

@Asperamanca
m_Code Means,

MainWindow.h

class MainWindow : public QMainWindow
{
Q_OBJECT

QGraphicsScene m_Scene;
QGraphicsScene m_Scene1;
Code128Item * m_Code;

}

[Asperamanca]

@Ramkumar-Mohan
So just create 2 items like m_Code, instead of 2 scenes

[JonB]

@Ramkumar-Mohan

@JonB said in Multiple scenes in one QGraphicview:

I don't know why you think you would want multiple QGraphicsScenes

Like @Asperamanca says too.

[Ramkumar Mohan]

@JonB

Now , working fine , Thank You

[Ramkumar Mohan]

@JonB

Hi, one more doubt ,

Can multiple QGraphviews be printed to the printer one by one?

[JonB]

@Ramkumar-Mohan
I imagine so, why not? Certainly assuming you can print one QGraphicsView you can print many.

[Ramkumar Mohan]

@JonB

I am a beginner in qt and I don't really understand its concept.

[Ramkumar Mohan]

@Asperamanca @JonB

QGraphicsView Items should be set in this way ....

how to set the graph scale...

Thank you.

[Asperamanca]

@Ramkumar-Mohan
Not sure what the question here is. You can transform individual items (scale, rotate, shear), and you can do the same for the whole GraphicsView.

As for printing: You can grab a QPixmap or QImage of each GraphicsView and print it, for example.

[Ramkumar Mohan]

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