Sort of. VB6 has #Const, which allows you do define a constant variant, which can then be used in a #if..then..#else construct. But it isn't as powerful as the equivalent features in C See here[^]
Ian Darling "The different versions of the UN*X brand operating system are numbered in a logical sequence: 5, 6, 7, 2, 2.9, 3, 4.0, III, 4.1, V, 4.2, V.2, and 4.3" - Alan Filipski