How to Mirror Multiple GdViewer Instances

[SkydiverFL]

The app I'm building needs two viewers side-by-side... one to show the sample / working image and one for the resulting image. I would like all of the pan and zoom actions in one viewer to be mirrored identically in the second viewer, and vice versa. Is there an existing mechanism to handle this? Do I need to handle each event myself? If I must manually handle each event, what are the minimum events I would need to account for?

Thanx,
Fred

[SkydiverFL]

It's working fine with the following...

Code: Select all

            toViewer.ZoomMode = fromViewer.ZoomMode;
            toViewer.Zoom = fromViewer.Zoom;

            toViewer.DocumentAlignment = fromViewer.DocumentAlignment;
            toViewer.DocumentPosition = fromViewer.DocumentPosition;
            toViewer.SetVScrollBarPosition(fromViewer.GetVScrollBarPosition());
            toViewer.SetHScrollBarPosition(fromViewer.GetHScrollBarPosition());

I'm calling this on ScrollViewer, AfterZoomChange, and whenever either viewer's Document changes. There's a bit of error handling mixed in there to prevent mismatched document sizes from causing an error. And, some of this may be overkill. But, it works for my purposes at the moment.

Hope this helps.

Thanx,
Fred

[SamiKharma]

Hi Fred,

That's pretty much it, and if you want, you can also have a look at our Document Clean Up demo in the c# folder of the demos folder.
It has exactly what you want.

Best Regards,
Sami Kharma
GdPicture Support