HEX Editor COM Control You can find the HEX Editor GUI example based on this ActiveX control  https://www.codeproject.com/Articles/1384/Hex-Editor-OCX-Control It was a challenge to make it all work, but due the Lars his bright solution the final piece of the puzzle was in place. See here where all the magic is happening !   I made 2 slight optimizations : 1. No need for an external VBScript 2. No need to register the OCX control on Windows   PREQ