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OpcUaApplicationDescriptionClear (Function)
OpcUaApplicationDescriptionInitialize (Function)
OpcUaBrowsePathClear (Function)
OpcUaBrowsePathInitialize (Function)
OpcUaBrowsePathResultClear (Function)
OpcUaBrowsePathResultInitialize (Function)
OpcUaBrowseResultClear (Function)
OpcUaBrowseResultInitialize (Function)
OpcUaByteStringClear (Function)
OpcUaByteStringCompare (Function)
OpcUaByteStringConcatenate (Function)
OpcUaByteStringCopyTo (Function)
OpcUaByteStringInitialize (Function)
OpcUaDataValueClear (Function)
OpcUaDataValueCompare (Function)
OpcUaDataValueCopyTo (Function)
OpcUaDataValueInitialize (Function)
OpcUaDateTimeUtcNow (Function)
OpcUaEndpointDescriptionClear (Function)
OpcUaEndpointDescriptionInitialize (Function)
OpcUaEventFieldListClear (Function)
OpcUaEventFieldListInitialize (Function)
OpcUaEventNotificationListClear (Function)
OpcUaEventNotificationListInitialize (Function)
OpcUaExpandedNodeIdClear (Function)
OpcUaExpandedNodeIdCompare (Function)
OpcUaExpandedNodeIdCopyTo (Function)
OpcUaExpandedNodeIdInitialize (Function)
OpcUaExpandedNodeIdIsNull (Function)
OpcUaExtensionObjectClear (Function)
OpcUaExtensionObjectCompare (Function)
OpcUaExtensionObjectCopyTo (Function)
OpcUaExtensionObjectCreate (Function)
OpcUaExtensionObjectDelete (Function)
OpcUaExtensionObjectInitialize (Function)
OpcUaLocalizedTextClear (Function)
OpcUaLocalizedTextCompare (Function)
OpcUaLocalizedTextCopyTo (Function)
OpcUaLocalizedTextInitialize (Function)
OpcUaNodeIdClear (Function)
OpcUaNodeIdCompare (Function)
OpcUaNodeIdCopyTo (Function)
OpcUaNodeIdInitialize (Function)
OpcUaNodeIdIsNull (Function)
OpcUaQualifiedNameClear (Function)
OpcUaQualifiedNameCompare (Function)
OpcUaQualifiedNameCopyTo (Function)
OpcUaQualifiedNameInitialize (Function)
OpcUaReadValueIdClear (Function)
OpcUaReadValueIdInitialize (Function)
OpcUaReferenceDescriptionClear (Function)
OpcUaReferenceDescriptionInitialize (Function)
OpcUaServerOnNetworkClear (Function)
OpcUaServerOnNetworkInitialize (Function)
OpcUaSimpleAttributeOperandClear (Function)
OpcUaSimpleAttributeOperandInitialize (Function)
OpcUaStackDecodeGetPosition (Function)
OpcUaStackDecodeSetPosition (Function)
OpcUaStackDecodeValue (Function)
OpcUaStackEncodeGetPosition (Function)
OpcUaStackEncodeSetPosition (Function)
OpcUaStackEncodeValue (Function)
OpcUaStackFinishDecode (Function)
OpcUaStackFinishEncode (Function)
OpcUaStackStartDecode (Function)
OpcUaStackStartEncode (Function)
OpcUaStatusChangeNotificationClear (Function)
OpcUaStatusChangeNotificationInitialize (Function)
OpcUaStringAttachCopy (Function)
OpcUaStringAttachReadOnly (Function)
OpcUaStringAttachToString (Function)
OpcUaStringClear (Function)
OpcUaStringGetRawString (Function)
OpcUaStringInitialize (Function)
OpcUaStringIsEmpty (Function)
OpcUaStringIsNull (Function)
OpcUaStringStrLen (Function)
OpcUaStringStrSize (Function)
OpcUaStringStrnCat (Function)
OpcUaStringStrnCmp (Function)
OpcUaStringStrnCpy (Function)
OpcUaVariantClear (Function)
OpcUaVariantCompare (Function)
OpcUaVariantCopyTo (Function)
OpcUaVariantInitialize (Function)

File and Project Information
Library Reference
- CmpOPCUAStack Interfaces
  - Library Identification
  - Library Properties

CmpOPCUAStack Implementation

Docs »
OpcUaStringIsNull (FUN)

OpcUaStringIsNull (FUN)¶

FUNCTION OpcUaStringIsNull : BYTE

InOut:

Scope	Name	Type
Return	`OpcUaStringIsNull`	`BYTE`
Input	`pString`	POINTER TO OpcUa_String

CODESYS Group | We software Automation. to software
['sɒftwɛər]
transitive verb
__softwared/softwaring
: to develop software
// to software automation: to develop software for automation purposes

The CODESYS Group is the manufacturer of CODESYS, the leading hardware-independent IEC 61131-3 automation software for developing and engineering controller applications.
CODESYS® is a registered trademark.

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Germany

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