dOPC Client Toolkit Help file
TdOPCItemList.CheckOPCErrors Method
public: __fastcall CheckOPCErrors(
    AnsiString Caption, 
    boolean MakeException = true
public CheckOPCErrors(
    String Caption, 
    boolean MakeException
Visual Basic
Public Sub CheckOPCErrors(
    Caption As String, 
    MakeException As boolean = true

CheckOPCErrors reports if the last operation of one or more TdOPCItem objects in the list failed.

The Caption parameter is used for the dialog box title. If the MakeException parameter is False,the method displays a message box, otherwise it raises an exception.

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