It depends on the IDE; in particular, whether it competes with Microsoft's own line of business. Microsoft has historically had non-compete clauses in its dev tool EULAs. It was an EULA violation, for instance, to use Visual Studio to write a word processor, database, or spreadsheet program.

I don't know if it still holds for the cuddly "new" Microsoft... but tread carefully. Windows Store is curated and thus more restrictive than straight Win32 app development would be.