IODCallback.OnReadObject (METH)ΒΆ

METHOD OnReadObject : ABORT_CODE

Will be called before a read operation is performed on an object. If all IODCallback instances registered to the Object Dictionary return ABORT_CODE.SUCCESSFUL read operation will be executed. Vice versa: If any instance returns an error read operation will be aborted and the reader will be informed.

InOut:

Scope

Name

Type

Comment

Return

OnReadObject

ABORT_CODE

ABORT_CODE.SUCCESSFUL if reading is permitted, else corresponding abort code

Input

itfObject

IODObject

Object to be read

itfSubObject

IODSubObject

Subobject to be read