Function spinStringSetValue 

pub unsafe extern "C" fn spinStringSetValue(
    hNode: spinNodeHandle,
    pBuf: *const c_char,
) -> spinError

Sets the value of a string node @see spinError

@param hNode The string node having its value changed @param pBuf The c-string of the value to set

@return spinError The error code; returns SPINNAKER_ERR_SUCCESS (or 0) for no error