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cdk_process(3) Library calls cdk_process(3) NAME cdk_process - Cdk widget pre/post-processing SYNOPSIS Perform pre- and post-processing of data which is injected into a widget. DESCRIPTION Character input is handled by each widget by its injection function. That is typically a large case-statement consisting of the actions to be taken for editing and scrolling keys. The calling application can modify the be- havior of the injection function by defining either or both preprocess and postprocess functions. Preprocessing is performed before doing anything with the injected key- stroke. If the preprocess function returns zero, no further action is taken in the injection function. Note that the preprocess function may do more than filter out characters; it can fill in logic to coordinate differ- ent widgets. Postprocessing is performed after all other actions have been done in the injection function. Like the other actions, it is performed only if the preprocess function returns a nonzero value. Unlike the preprocess func- tion, its return value is ignored. SEE ALSO cdk(3), cdk_binding(3). 2024-03-28 cdk_process(3)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO
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