How do you draw a rectangle after using SetRectValues?

[bobz]

Hi

I have drawn a rectangle on a GdViewer image using the mouse and saved the coordinates from GetRectValues.
When I reload the image and set the rectangle values using SetRectValues, the rectangle does not appear. What am I doing wrong?

Any help would be appreciated.

Regards

Bob

[Loïc]

Hi,

What is the code you are using to do that ?

I've made tests with success.

Best regards,

Loïc

[bobz]

Thanks for your reply Loic.

The code is:

GdViewer.SetRectValues(iLeft, iTop, iWidth, iHeight);
GdViewer.CenterOnRect;

Where iLeft, etc are values retrieved from a database.
The CenterOnRect works but you can't see the rectangle or move it in any way.

GDViewer's property MouseMode is set to ModeAreaSelection and RectDrawMode is set to 13 - RectDrawModeCopypen.

Regards

Bob

[bobz]

For those of you that may have this problem, I have finally figured it out. Purely by accident though!

The selection rectangle is only shown only if it is drawn using SetRectValues after the viewer is displayed. In Delphi 2007 the only way I could get this to work was to use a timer.
Either this is a bug in the viewer or there is some trick to it!

Regards

Bob