wvh_is_askey
Tests whether or not a specified key exists in an existing PV-WAVE associative array variable.
C Usage
long wvh_is_askey(asarr_wvh, key)
WVH asarr_wvh
char *key
Input Parameters
asarr_wvh—A PV-WAVE variable handle for an existing PV‑WAVE ASARR variable.
key—A string (pointer to a character array) containing the key you wish to test.
Returned Values
TRUE(1): If key exists in the associative array.
FALSE(0): If key does not exist in the associative array.
Discussion
The PV-WAVE ASARR variable you pass in must already exist in your PV‑WAVE session, either retrieved by your C routine or created by wave_assign_asarr.
wvh_is_askey currently supports only the C language interface.
For more information and example usage, see the example OPI in the $WAVE_DIR/demo/interapp/option directory.
For more general information about creating PV-WAVE variables in your C routine, see the documentation for the wave_assign_* routines.
