Mixed-mode programming techniques supported by OS/2 2.0 and C Set/2 enable the integration of 16-bit code into 32-bit programs. For example, the user may continue to develop panels using Dialog Manager, a 16-bit Presentation Manager interface previously provided in IBM OS/2 Programming Tools and Information, version 1.3; this code can be incorporated into a 32-bit executable that takes advantage of the 32-bit interface provided by OS/2 2.0. Both the 32-bit development environment (C Set/2 with tools) and the 16-bit development environment (a 16-bit compiler with tools) can be installed in WorkFrame/2 to enhance productivity in the mixed-mode environment.