Pan and move

[gcapoccia]

I'll to explain whats I'm trying to do:
I've two viewer one on top of the other one, the topmost in transparent. I'll display a picture from file in the lower one and I'll draw a line in the topmost. Up to here everything works. Then, I'll zoom the lower one and getting the zoom factor resize also the topmost, everything still work. Now became the problem: when I try to move (pan) with the mouse using hand cursor the lower one move the upper one no!!! can anyone tell me if exist an event to detect the movement/pan and how reflect this position change to the upper viewer???

I'm very sorry for the explanation but for me is not very easy to explain in english, in italian too....

thank to everybody, gcapoccia

[Loïc]

Hi,

Just catch the Display Event. I think it is what you need.

Best regards,

Loïc

[gcapoccia]

great, works just fine. once more, now using the .GetImageLeft and .GetImageTop properties I can understand how I'm moving the lower picture. How set the upper image in the same coords (exist the property .SetImageLeft) ?

thanks again, gcapoccia

[gcapoccia]

Hi,

Just catch the Display Event. I think it is what you need.

Best regards,

Loïc

great, works just fine. once more, now using the .GetImageLeft and .GetImageTop properties I can understand how I'm moving the lower picture. How set the upper image in the same coords (exist the property .SetImageLeft) ?

thanks again, gcapoccia

[Loïc]

Hi.

Like that:

Code: Select all

nWidthDisplay =  GdViewer1.ImageWidth * GdViewer1.Zoom
nHeightDisplay = GdViewer1.ImageHeight * GdViewer1.Zoom

Loïc