Image provided by: FrancescoGame Boy Advance Windowing System (or simply GBA WinS) is a windows-based environment for the Game Boy Advance. WinSAPI is the common Application Programming Interface through wich a programmer can build a WinS program. WinS Gfx Lib (WGL) is the GBA Mode 3 graphics library over which WinSAPI is built. GBA WinS Devkit is the tool you can use to build WinS applications. This means that now it’s up to you GBA WinS fans making GBA WinS something useful or deciding to let it die and be forgotten”like tears in the rain”. This project has become open-source as well.