Choose File > Open or click to load an existing interface into the interface builder. You can load any CAPI interface, whether it is one that you have designed using the interface builder, or one that has been coded by hand using the CAPI library. You can load as many interfaces as you want, and then use the History > Items submenu to swap between the loaded interfaces when working on them.
To load one or more existing interfaces:
A file prompter dialog appears.
You should choose a file that contains the source code for at least one CAPI interface. If the file does not contain any such definitions, an error message appears informing you of this.
Once you have chosen a file, a dialog appears listing all the interface definitions that have been found in the file, as shown in Choosing which interfaces to load into the interface builder. This lets you choose which interface definitions to load into the interface builder. By default, all the definitions are selected.
Figure 15.3 Choosing which interfaces to load into the interface builder
You can select as many or as few of the listed interfaces as you like; the All or None buttons can help to speed your selection. Click Cancel to cancel loading the interfaces altogether.