Our tested application contains many charts. What is the best approach to adopt in TestComplete to test it?
We tried Region Checkpoints but it has some limitations; such as the need to run the test in the same environment (OS Platform, resolution, font smoothing, etc).
My suggestion would be,
Identify which tool is running your application (Desktop, tablet ...) and make checkpoint for each situation.
To ease you can create a valid comparison function that where your application is running (using Sys.)
and pass as a parameter the image name (using Regions.item (var)) ... I hope to have collaborated with their doubts.
If you need anything, I'm at your disposal.