Ivi_DeleteAttributeInvalidation
Usage
ViStatus Ivi_DeleteAttributeInvalidation(ViSession vi, ViAttr attributeID, ViAttr dependentAttributeID);
Purpose
This function removes the invalidation dependency relationship between two attributes. You establish invalidation dependency relationships using Ivi_AddAttributeInvalidation.
Parameters
| Name | Type | Description |
|---|---|---|
| vi | ViSession | The ViSession handle that you obtain from Ivi_SpecificDriverNew. The handle identifies a particular IVI session. |
| attributeID | ViAttr | Pass the ID of the attribute for which any change in value invalidates the cache value of the other attribute. |
| dependentAttributeID | ViAttr | Pass the ID of the attribute which is invalidated when the value of the other attribute changes. |
Return Value
Contains the status code that the function call returns. IVI engine functions can return error and warning values from several sets of status codes. Some status codes are unique to the IVI engine. Other status codes are the same codes that VISA Library functions return. Still others are error or warning values that functions in specific instrument drivers return. Each set of status codes has its own numeric range.
Regardless of the source of the status code, 0 always indicates success, a positive value indicates a warning, and a negative value indicates an error.