pascalSCADA OPM: psOPCDA: Interface IOPCDataCallback

Pascal SCADA OPM

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Interface IOPCDataCallback

Description

Hierarchy

Fields

Methods

Properties

Unit

psOPCDA

Declaration

type IOPCDataCallback = interface(IUnknown)

Description

*********************************************************************// Interface: IOPCDataCallback GUID: {39C13A70-011E-11D0-9675-0020AFD8ADB3} *********************************************************************//

Attributes

GUID['{39C13A70-011E-11D0-9675-0020AFD8ADB3}']

Hierarchy

IUnknown
IOPCDataCallback

Overview

Methods

	`function OnDataChange( dwTransid: DWORD; hGroup: OPCHANDLE; hrMasterquality: HResult; hrMastererror: HResult; dwCount: DWORD; phClientItems: POPCHANDLEARRAY; pvValues: POleVariantArray; pwQualities: PWordArray; pftTimeStamps: PFileTimeArray; pErrors: PResultList): HResult; stdcall;`
	`function OnReadComplete( dwTransid: DWORD; hGroup: OPCHANDLE; hrMasterquality: HResult; hrMastererror: HResult; dwCount: DWORD; phClientItems: POPCHANDLEARRAY; pvValues: POleVariantArray; pwQualities: PWordArray; pftTimeStamps: PFileTimeArray; pErrors: PResultList): HResult; stdcall;`
	`function OnWriteComplete( dwTransid: DWORD; hGroup: OPCHANDLE; hrMastererr: HResult; dwCount: DWORD; pClienthandles: POPCHANDLEARRAY; pErrors: PResultList): HResult; stdcall;`
	`function OnCancelComplete( dwTransid: DWORD; hGroup: OPCHANDLE): HResult; stdcall;`

Description

Methods

	`function OnDataChange( dwTransid: DWORD; hGroup: OPCHANDLE; hrMasterquality: HResult; hrMastererror: HResult; dwCount: DWORD; phClientItems: POPCHANDLEARRAY; pvValues: POleVariantArray; pwQualities: PWordArray; pftTimeStamps: PFileTimeArray; pErrors: PResultList): HResult; stdcall;`

	`function OnReadComplete( dwTransid: DWORD; hGroup: OPCHANDLE; hrMasterquality: HResult; hrMastererror: HResult; dwCount: DWORD; phClientItems: POPCHANDLEARRAY; pvValues: POleVariantArray; pwQualities: PWordArray; pftTimeStamps: PFileTimeArray; pErrors: PResultList): HResult; stdcall;`

	`function OnWriteComplete( dwTransid: DWORD; hGroup: OPCHANDLE; hrMastererr: HResult; dwCount: DWORD; pClienthandles: POPCHANDLEARRAY; pErrors: PResultList): HResult; stdcall;`

	`function OnCancelComplete( dwTransid: DWORD; hGroup: OPCHANDLE): HResult; stdcall;`

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