You can specify conditional branching in a resource-definition file, based on whether a term is defined on the rc command line with the /d option.
For example, suppose your application has a pop-up menu, the Debug menu, that should appear only during debugging. When you compile the application for normal use, the Debug menu is not included. The following example shows the statements that can be added to the resource-definition file to define the Debug menu:
MainMenu MENU
BEGIN
.
.
.
#ifdef DEBUG
POPUP "&Debug"
BEGIN
MENUITEM "&Memory usage", ID_MEMORY
MENUITEM "&Walk data heap", ID_WALK_HEAP
END
#endif
END
When compiling resources for a debugging version of the application, you could include the Debug menu by using the following rc command:
rc -r -d debug myapp.rc
To compile resources for a normal version of the application—one that does not include the Debug menu—you could use the following rc command:
rc -r myapp.rc