et_proc()

Searches the event table for the specified event code and calls its corresponding function

Call
#include <vv_sys.h>
int et_proc(eventp, etp, userp)
EVENTPTR eventp	Pointer to event to process
ETPTR etp	Pointer to the event table to use
PTR userp	Pointer to data to pass to key function
Description of Parameters etp:Specify a pointer to an event table. The Vermont Views event tables are as follows:
CLETP		Choice list event table
FLDETP		Field event table
FMETP		Form event table
DRAGETP		Draw and drag event table
HELPETP		Help event table
MEMOETP		Memo event table
MNETP		Menu event table
PUSHETP		Pushbutton event table
RADIOETP		Radio button event table
SRETP		Scrollable region event table
SYSETP		System event table
TTMEMOETP		Tickertape memo event table
VIEWETP		Viewing event table
LBOXETP		List box event table
Returns
>= 0	The specified event code is found
1	The specified event code is found, but its corresponding event function is a NULLFP. No event function is called.
-1	Either (1) the event code passed is 0, or (2) there is no entry in the event table for the event code and no default event function is installed
Description If the event code is 0, et_proc() immediately returns -1. If the event code is not 0, et_proc() searches the event table for the event code. If there is an entry in the table for the event code, the corresponding event function is called. The pointer to the data specified in the et_proc() call is passed to this function. et_proc() returns the value returned by the called event function. If there is no entry in the event table for the event code, but there is a default event function installed, the default event function is called instead. The value returned by the called default event function is returned by et_proc(). If there is no entry in the event table for the event code, and there is no default event function installed, -1 is returned.
Related Functions et_def(), et_delfp(), et_free(), et_getfp(), et_rplevnt()
Cautions Because et_proc() returns -1 in the event of an error, functions installed in a event table should not return -1 unless an error occurs.