CLASSPREFIX_ATTR_RECORD_COERCIONS
To form the CLASSPREFIX_ of the attribute name, use the prefix of the class driver with which you are working. For example, if you are working with the IviDmm class driver, use the prefix IVIDMM_ to create the correct attribute name, IVIDMM_ATTR_RECORD_COERCIONS.
Inherent Attribute
| Data Type | Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|
| ViBoolean | R/W | N/A | None | None |
Description
Specifies whether the specific driver keeps a list of the value coercions it makes for ViInt32 and ViReal64 attributes. When this attribute is enabled, the class driver maintains a list of each coercion. You can view the coercion information with NI Spy. Alternatively, you may call CLASSPREFIX_GetNextCoercionInfo to extract and delete the oldest coercion record from the list.
The default value is VI_FALSE. You can override this value by specifying a value in MAX or by initializing the IVI session with the CLASSPREFIX_InitWithOptions function.
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Note If ClassPrefix_ATTR_RECORD_COERCIONS is set to true and you are not using NI Spy, the coercion queue is cleared by calling ClassPrefix_GetNextCoercionInfo. If you do not clear the queue, the resulting list build-up appears as a memory leak. |