Programmer Guide > Creating an OPI Option > wsdh_ntags
  

wsdh_ntags
Gets the number of tags in a PV‑WAVE structure variable.
C Usage
long wsdh_ntags(wsdh)
WSDH wsdh;
FORTRAN Usage
INTEGER*4 LF_WSDH_NTAGS(l_wsdh)
INTEGER*4 l_wsdh
64-bit UNIX FORTRAN Usage
INTEGER*8 LF_WSDH_NTAGS(l_wsdh)
INTEGER*8 l_wsdh
Input Parameters
wsdh—A Wave structure definition handle.
Returned Value
Returns the number of tags in the structure definition.
Returns –1 on failure, if the handle argument is not a valid Wave structure definition handle.

Version 2017.0
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