I am working on a TCG Card Game for Mac and Windows but I am having issues with the Rectangle Control. I give the Rectangle a color such as Orange and it looks fine on the Mac side but in Windows it is pure Black. Any reason why?
You must be using an old version of Xojo.
I am using Xojo 2013 R 4.1.
I remember that bug, which has been fixed in a subsequent version (check release notes at xojo.com for the exact one). If I recall, it happened specifically when generating Windows executables on Mac, but not when the build was done on Windows. Your solution is to generate on Windows, eventually in a virtual machine or Boot Camp, or get the latest Xojo version.
What about doing the drawing on a Canvas instead of using interface objects?
Same punishment. It affected images as well.