[Gambas-user] Grabing an image from a drawingarea ?

[Ron Onstenk]

On Wednesday 27 September 2006 08:45, Benoit Minisini wrote:
> I think you use a cached DrawingArea. To be able to control the picture you 
> display, you must used an uncached DrawingArea, have the Picture you display 
> in a variable, and display it in the Draw event of the DrawingArea. 
> Then you will be able to save the Picture easily.
> 
> Regards,
> 

Thanks,
I had same problem with offscreen garbage and I'm not the only one.
By security reason I did drop using the method totally.

Vertical size of picture is bigger then screen height in my case.
Using grab() shows random data from memory.
It returns a memory block with size of the control the .grab() is 
done and not the partial size that is really visible and in
users context.

In fact it is a security bug if the grab() shows more then  
the visible size of the window/component used for grab(). !!!
And I mean the real visible part at most.
I could see in the garbage at the bottom of the picture some 
private information about the bank another user had visit on 
my box (with permission).

Ron