IPB_Value interface:
SetToNull method
Description
Sets the data contained in the IPB_Value instance to null so the data can be reset.
Syntax
SetToNull( )
Return Values
PBXRESULT. If the value is a read-only argument, the error PBX_E_READONLY_ARGS is returned.
Examples
This example shows the use of SetToNull when a null blob value is returned:
case pbvalue_blob:
pStr=(LPCTSTR)Session-> GetBlob(retVal.blob_val);
if (strncmp(pStr, "null", 4)==0 )
ci->returnValue->SetToNull();
else
ci->returnValue->SetBlob(retVal.blob_val);
break;
...