No ScrollBar in QGraphicsView

[sujan.dasmahapatra]

Dear Friends
I have some QGraphicsItems in the QGraphicsScene which is visualized by QGraphicsView. I am doing some translation so that my item is getting out of the view.Some part is not visible. I am getting no horizontal scrollbar to see it..How could I set this mechanism so that whenever my items is out I should get a scrollbar.

[yogeshgokul]

Set properties :

setVerticalScrollBarPolicy();
setHorizontalScrollBarPolicy();

[spirit]

take a look at QAbstractScrollArea::setHorizontalScrollBarPolicy/setVerticalScrollBarPolicy.

[sujan.dasmahapatra]

Even if I put a scrollbar using setHorizontalScrollbarPolicy() then it's seen but I can't scroll if my item is translated and getting out of the view.
I think this is some other problem.I am not setting any setSceneRect for my view.Do I need to set always a rect using setSceneRect....What is the fundamental can anybody expliain me....

Whelese could be the reason. ??

[h123]

Hi,
I am facing the same problem, did you got any clue ??? pl. share.
Thank you.

[yogeshgokul]

Hi guys.
Please run this test code.
You will see, the scrollbars comes automatically.
Because the GV cannot show the full line.
I hope you are getting my point.

#include <QApplication>
#include <QGraphicsScene>
#include <QGraphicsView>
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	QApplication::setStyle("plastique");
	QGraphicsScene scene;	
	scene.addLine(0,0,2000,2000);
	QGraphicsView view(&scene);
	view.show();
	return a.exec();
}

#include <QApplication>
#include <QGraphicsScene>
#include <QGraphicsView>

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	QApplication::setStyle("plastique");
	QGraphicsScene scene;	
	scene.addLine(0,0,2000,2000);
	QGraphicsView view(&scene);
	view.show();
	return a.exec();
}

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[h123]

Hi yogeshgokul,

If you add items from scene then it scrolls, that is fine.
The problem I am facing is I am drawing text using QPointer in QGraphicsView::drawForeground(), in this case the text gets cuts towards the rigth side of the view and it is not showing scrollbars.
do you have any idea for this case ?
Thank you.

[wysota]

You have to set the scene size properly and the scrollbars will appear.