Use Windows Forms within the .NET environment. Windows Forms is a model for developing rich client GUI applications that are built around classes in the .NET Framework class library's System.Windows.Forms namespace. They have a programming model all their own that is cleaner, more robust, and more consistent than models based on the Win32 API or MFC, and they run in the managed environment of the .NET Common Language Runtime (CLR). NetCOBOL for .NET provides designer support making it easy to design your graphical interfaces and write the supporting COBOL code.