Does Construct runs in ReactOS?
As far as I can tell DirectX isn't fully implemented. They seem to be using Wine as a sort of template for the whole thing... that should give you some idea of compatibility.
Btw the projects past is kinda iffy, as I recall there was a huge screw up a few years ago. Something with one of the contributors adding bad, or copied code... Im not sure.
Not that I don't wish them well. If they can pull it off, I'd be the first in line to use it.
Im just saying I hope that nasty bit in the past made for a learning experience.