Thanks for sharing these links. Regarding x64 version - it should be available soon, Paul is working on this I believe. I can provide help with other issues when you decide to upgrade. Presumably zooming issue can be solved by setting AxMap.ZoomBehavior and AxMap.MapResizeBehavior. Not sure about other ones. The next major revision of MapWinGIS will be in a few months when we release MapWindow 5. There will be a number of improvements. Perhaps you'd like to upgrade then to avoid spending the effort twice. We don't plan any breaking API changes, but for the existing app some amount of tuning may still be needed.
Regards,
Sergei
Regards,
Sergei