VB6 debugging- doesn't go to error handling code.
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Can Ho
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Published on 2011-03-07T04:18:29Z
Indexed on
2011/03/16
8:10 UTC
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Hi, I'm maintaining a vb6 project(ActiveX DLL). When debugging, the app run into the following function:
Public Function HasValue(ByVal vValue) As Boolean
On Error GoTo Err
If IsMissing(vValue) Then
HasValue = False
ElseIf IsNull(vValue) Or Len(vValue) = 0 Then
HasValue = False
ElseIf isEmpty(vValue) Then
HasValue = False
Else
HasValue = True
End If
Exit Function
Err:
If IsArray(vValue) Or IsObject(vValue) Then
HasValue = True
Else
HasValue = False
End If
End Function
and it stops at the line
ElseIf IsNull(vValue) Or Len(vValue) = 0 Then
vValue is a custom object, contains some properties(obviously, not null).
Although I didn't put any break point there, the app stopped there and alerted error dialog saying that "Run-time error '438': Object doesn't support this property or method".
We had error handling code but the app didn't run to error handling code. It just stopped at the line causing the error and I had to stop the application.
Do you have any idea about that? Thank you very much.
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