Ivi_Spying
Usage
ViBoolean = Ivi_Spying(ViSession vi);
Purpose
This function returns the current value of the IVI_ATTR_SPY attribute for the session you specify.
Use Ivi_Spying in the high-level functions in class instrument drivers. Ivi_Spying provides fast, convenient access to the IVI_ATTR_SPY attribute because it does no error checking and does not lock the session.
 | Note Do not call this function unless you have already locked the session. |
Parameters
| Name | Type | Description |
|---|---|---|
| vi | ViSession |
The ViSession handle that you obtain from Ivi_SpecificDriverNew. The handle identifies a particular IVI session. |
Return Value
Returns the value of the IVI_ATTR_SPY attribute for the session. This attribute determines whether class instrument drivers use the NI-Spy utility to record calls to class driver functions.
Values:
| VI_TRUE (1) | Spy on |
| VI_FALSE (0) | Spy off |
If you pass an invalid session handle to the function, this parameter returns VI_FALSE.