I set out to see if I could write a simple Cross-OS program using NASM and GTK+ 2 on Linux and Windows. GTK is a cross OS GUI library, so it seemed it would be easy enough. Holy crap was I wrong!

On Linux, it is simple:
1. Build the GUI with GLADE and save the glade file.
2. Write Assembly code using NASM to load the glade file, show the...