[Qt-interest] NoScrollBar is coming

[John McClurkin]

Sujan Dasmahapatra wrote:
> Mr John Thanks for information I think I understood the problem. Please 
> tell me one thing upto what extent maximum I can increase the size of 
> the scene ?? Thanks
> Sujan
I don't think that there is a maximum.

> 
> On Thu, Aug 20, 2009 at 6:31 PM, John McClurkin <jwm at nei.nih.gov 
> <mailto:jwm at nei..nih.gov>> wrote:
> 
>     Sujan Dasmahapatra wrote:
>      > Dear Mr Ferenc
>      > I need to discuss something in this regard.When I create a
>      > QGraphicsScene and a QGraphicsView, Do I need to do
>      > QRectF rect;
>      > scene->setSceneRect(rect);
>      > view->setSceneRect(rect);
>      >
>      > What would be the optimized size of the rect  ???? According to my
>      > implementation I haven't set SceneRect and by default
>      > ""The default policy is
>      > Qt::ScrollBarAsNeeded" for both directions..."
>      >  So in my case when my object is going out of the view scrollbar
>     should
>      > come , why it's not coming ????
>      >
>      > I have read GraphicsView Framework still my doubt is
>     under-development..
>      > Could youhelp me in uderstanding these things .
>      >
>      > Thanks !!!!
>      >
> 
>     Sujan,
>            You are manipulating objects in your QGraphicsScene and
>     making them go
>     out of the scene. However the QGraphicsScene has no visual properties,
>     that is, it has no scrollbar. Only the QGraphicsView has scrollbars. The
>     default behavior is to show scrollbars if the QGraphicsScene is larger
>     than the QGraphicsView. Causing objects to move out of the scene does
>     not automatically cause the scene to grow. Since the scene is always the
>     same size as the view, the view does not show scrollbars. To get
>     scrollbars to show, you need to change the size of the scene so that it
>     fully includes the objects after you have manipulated them.
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> 
> 
> 
> -- 
> Thanks & Regards
> S. Dasmahapatra
> B.E. (Aeronautics-Aerodynamics)
> Bangalore, India
> Ph:91-9900839788
> Office:91-80-66470248
> mail id : sujan.dasmahapatra at gmail.com <mailto:sujan.dasmahapatra at gmail.com>