cdk_process man page on DragonFly

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cdk_process(3)							cdk_process(3)

NAME
       cdk_process - curses widget pre/post-processing

SYNOPSIS
       Perform	pre- and post-processing of data which is injected into a wid‐
       get.

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  behavior  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
       different 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 prepro‐
       cess function, its return value is ignored.

SEE ALSO
       cdk(3), cdk_binding(3).

								cdk_process(3)
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