SetToNull

Description

Sets the data contained in the IPB_Value instance to null so the
data can be reset.

Syntax

SetToNull( )

1	SetToNull( )

Return value

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-&gt; GetBlob(retVal.blob_val); 
if (strncmp(pStr, "null", 4)==0 )
ci-&gt;returnValue-&gt;SetToNull();
else
 ci-&gt;returnValue-&gt;SetBlob(retVal.blob_val);
break;
...

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;

...

See also

IsEnum

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Powerbuilder Documentation 2021

August 21, 2023

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