Tutorial: How to extend TImageViewer to zoom in FireMonkey XE3 (Delphi XE3)
DISCLAIMER: This video is boring to the average YouTube viewer.
With TImageViewer of FireMonkey (Delphi XE3) we can also zoom into picture. In the tutorial shows how you do it. We have access to private fields (TRttiContext, TRttiInstanceType). And we need to override the Scale method.