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Error Handling in VB6 (1/2)<br />
� errors are returned by COM object‘s<br />
functions as HRESULTs<br />
� use "On Error Goto" statement<br />
...<br />
On Error Goto Handler ' enable error handler<br />
r.SetSymol "a", 25<br />
b = r.GetSymbol("b")<br />
On Error Goto 0 ' restore default<br />
Exit Sub<br />
:Handler<br />
' perform cleanup code
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