First, I am developing a custom VMS Client based on Xprotect Essential+. Another VA Server I made is sending metadata to XProtect server. And the UI client has several ImageViewerControl. so I am looking for a way to display bounding boxes on ImageViewerControl. Is it possible?
Yes, it is.
Explore the Video Viewer Quality sample, specifically the Set Shape button. https://doc.developer.milestonesys.com/html/index.html?base=samples/videoviewerquality_sample.html&tree=tree_2.html