Question

Why will my Do....Loop not stop?

Asked by: rcappell

I have written a simple search macro using VBA in WRQ reflections. I want it to loop through the pages until the final page and then stop.  However becaues of a required ENTER key transmit it doesn't stop.
I have attached the code fo you to review.

Sub testing()
'
'Created by Ruth Cappelletti on May 9, 2008.
'This macro will search for a specific statement set from a message box
'in a bill in VEQC while paging through the pages of the bill. It will
'stop at each instance of the found statment and wait for the enter key
'input before continueing to search.
 
Dim BOM As String * 12
Dim VerPG As String * 3
Dim Ver As String * 3
Dim STMT As String * 7
Dim Search As String * 7
 
    
    BOM = InputBox$("BOM and Set Number", "BILL")
    Search = InputBox$("Statement for Search", "Statement")
 
    
    With Session
        .WaitForEvent rcEnterPos, "30", "0", 23, 8
        .WaitForDisplayString "NEXT:", "30", 23, 2
        .TransmitANSI "veqc"
        .TransmitANSI BOM
        .TransmitTerminalKey rcIBMEnterKey
        Ver = .GetDisplayText(1, 73, 3)
        VerPG = .GetDisplayText(1, 77, 3)
 
    i = 2
        Do Until Ver = VerPG
 
    For s = 7 To 22
        STMT = .GetDisplayText(s, 2, 8)
 
            If STMT = Search Then
                .SetSelectionStartPos s, 2
                .ExtendSelection s, 15
                    retval = MsgBox("Continue Search?", vbOKCancel)
                    If retval = 2 Then
                    Exit Sub
                    End If
            End If
            
    
    Next s
        
        .TransmitTerminalKey rcIBMEnterKey
        .WaitForEvent rcKbdEnabled, "220", "0", 1, 1
        
    Loop 
    
    End With
End Sub

                                  
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Asked On
2008-05-18 at 09:18:54ID23412009
Tags

Microsoft

,

VBA

,

used in a WRQ reflection session

Topics

Data Mining

,

Access Coding/Macros

Participating Experts
1
Points
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Comments
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Answers

 

by: robinuPosted on 2008-05-18 at 09:46:09ID: 21593241

Not knowing anything about WRQ reflection sessions, in your loop the statement

Do Until Ver = VerPG
 
determines when the loop stops.

Both the variables Ver and VerPG get a value before the loop starts, and
after that inside the loop the never get a new value. So when the starts with
different values for Ver and VerPG, of course the loop continues and continues..

 

by: rcappellPosted on 2008-05-18 at 11:43:31ID: 21593586

So if I change the logic of the Do Until  so that the VerPG gets the data after it loops to the second page where the items will be equal it should work.

Would it be better if I have it Loop Until instead of Do Until?  Or can I have it execute the Do while STMT field is not empty and then Loop Until the Ver = VerPG?

 

by: robinuPosted on 2008-05-18 at 12:18:39ID: 21593687

If you want it to exit the loop, one the variables (Ver of VerPg) needs to get a new value.

It depends what you want and your logic, for using a Loop Until or a Do Until.
Please have a look at http://www.ozgrid.com/VBA/do-until-loop.htm
for some explanation about it.

20120131-EE-VQP-002

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