1.6.2 Strategies for Supporting Multiple Systems

Selecting the best approach to supporting both graphical and character systems is very important and well worth the time invested. In general terms, there are three possible approaches to this problem. You can use ACUCOBOL-GT with any of these approaches. These approaches can be summarized as follows:

• Dual interface, dual code
  This approach uses separate programs for graphical and character systems.
• Single interface, single code
  This approach uses one program with a single user interface that runs under both graphical and character systems.
• Dual interface, single code
  This approach uses one program that includes two user interface implementations, one for graphical systems and one for character systems.

Each of these approaches has advantages and difficulties. The following sections consider the major issues.

More:

1.6.2.1 Dual interface, dual code

1.6.2.2 Single interface, single code

1.6.2.3 Dual interface, single code

1.6.2.4 Selecting the right approach