[Qt-interest] paint one image over other continously

[Rahulkumar Tibdewal]

Thanks.

I also don't intend to overwrite the original image.
I am getting pieces of images from client machine and  I want to display them on server machine.
On server machine I need to put all pieces in place so that It appear as a continuous non flickering image of client desktop.

I tried your method but it's not working for me. Can you please help me with some written sample code.

Thanks
Rahul



-----Original Message-----
From: Ulf-Alexander v. Ceumern-Lindenstjerna [mailto:ceumern at vrmagic.com] 
Sent: Friday, September 25, 2009 2:11 PM
To: Rahulkumar Tibdewal
Cc: qt-interest at trolltech.com
Subject: RE: [Qt-interest] paint one image over other continously


Well then don't overwrite the image data ?!

Here is what I would do:

Open a QPainter on the target image and use
QPainter::drawPixmap(...sourceImage...)
(http://doc.trolltech.com/4.5/qpainter.html#drawPixmap)

If you could provide more information about how exactly you are drawing
the image, more people would be able to help.

HTH, Ulf

> -----Original Message-----
> From: qt-interest-bounces at trolltech.com [mailto:qt-interest-
> bounces at trolltech.com] On Behalf Of Rahulkumar Tibdewal
> Sent: Friday, September 25, 2009 10:29 AM
> To: John McClurkin; qt-interest at trolltech.com
> Subject: Re: [Qt-interest] paint one image over other continously
> 
> It's not a question of calling update(). Update will simply invoke
> paint event again. I want my previous image should not get
overwritten.
> 
> Thanks
> Rahul
> 
> 
> 
> 
> -----Original Message-----
> From: qt-interest-bounces at trolltech.com [mailto:qt-interest-
> bounces at trolltech.com] On Behalf Of John McClurkin
> Sent: Thursday, September 24, 2009 8:45 PM
> To: qt-interest at trolltech.com
> Subject: Re: [Qt-interest] paint one image over other continously
> 
> Rahulkumar Tibdewal wrote:
> > Hello All,
> >
> >
> >
> > I am developing the application where server can monitor the client
> > desktop. I am sending the images continuously from client to server
> so
> > that server can see client desktop.
> >
> > Images are sent whenever there is any change on client desktop. i.e.
> > only changing rectangle images are sent for performance reasons.
> >
> >
> >
> > My Question is how can I paint continuously appearing images from
> client.
> >
> > I want to paint one image over other to its proper location
> continuously
> > so that it appear and continuous visualization of desktop, I am not
> sure
> > how's that possible.
> >
> By calling update() on the server widget that displays the client
> desktop whenever a new image is received? Really, this question is too
> vague to allow people to help you.
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