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Getting out of a Method
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21/11/1997 12:18:01
 
 
À
20/11/1997 19:05:53
Edward Crawford
City Facilities Management
Glasgow, Royaume Uni
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00061522
Message ID:
00061629
Vues:
38
>I have a process that is done once a month that requires exclusive use of a table. I know of no way to check to see if a user on the network already has this table open, so what I do is in the Error Event I check the error code. If the error code states that the file can not be opened exclusively, I show a MESSAGEBOX() to the user telling them that someone has the file open,and they must close it to continue. The problem is, when they click the OK button on the MESSAGEBOX, the user is then presented with the file locate dialog. How do I stop this behavior as well as the further processing of the method?
>
>-Ed

Ed,
First thing.. I use a different way of determining if I can get a file exclusive.. I try to open the table, using the low level file open routine, The code is below:

* METHOD TO CHECK IF FILE CAN BE OPENED EXCLUSIVELY

PARAMETER tcFILE

LOCAL llFILESTAT

llFILESTAT=FOPEN(tcFILE,2)
=FCLOSE(llFILESTAT)

IF llFILESTAT > 0

RETURN .T.

ELSE

RETURN .F.

ENDIF

Secondly, after the user selects OK from the messagebox, the next line I would have is a return .f., and in the calling method, I would check to see what the called method returned. If it returned .f., I would act accordingly..

Thanx!

Tony Miller
Vancouver, Wa
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