Solved

MS Access 2003 Pass Control To Function in Module

Posted on 2012-03-10
7
438 Views
Last Modified: 2012-03-15
I've read a dozen posts "pass control to function" but still can't make this work.  

I want a logging function that writes to a log and to a control on the form that called it.
The form has 2 controls -- Text box txtStatus and command button cmdDoSomething

Here's the onclick for cmdDoSomething:

Private Sub cmdDoSomething_Click()
Dim ctlDisplay As Control
Set ctlDisplay = Me.txtStatus
WriteLog "c:\MyLog.txt", "Stuff is happening", "Global", ctlDisplay
End Sub

Open in new window


Here's the function from module1:

Public Function WriteLog(LogSpec As String, LogMsg As String, LogType As String, ByVal ctlDisplay As Control)
Dim fs, ts, strLogText As String
strLogText = Format(Now(), "MMDD:HHNNSS") & " " & LogType & ": " & LogMsg & vbCrLf
Set fs = CreateObject("Scripting.FileSystemObject")
Set ts = fs.OpenTextFile(LogSpec, 8, True, 0)
ts.Write strLogText
ts.Close
Set ts = Nothing
Set fs = Nothing
If Not IsEmpty(cltDisplay) Then ctlDisplay.Text = strLogText & Left(ctlDisplay.Text, 2048)
End Function

Open in new window


No matter what I've tried, ctlDisplay ALWAYS ends up empty.

What am I doing wrong?
0
Comment
Question by:jriggin
  • 3
  • 3
7 Comments
 
LVL 57
ID: 37705363
If Not IsEmpty(cltDisplay)

 If it's NOT empty, then put something in it?

 A few things that will help:

 put a STOP right above that line.  Execute the code.  You'll get the IDE window when you hit that stop.

  Now you can hover over variables with the mouse and see their values or you can call up the debug window (Ctrl/G) and do:

? cltDisplay.Value

or

? cltDisplay.Name to see if the reference is valid and you get back the correct control name.

you can also set the value of anything defined:

strLogText = ""

 Also, now that you've halted execution, pressing F8 will step you through the code line by line so you can see what's getting executed.

 F5 will let execution take off from that point.

HTH,
Jim.
0
 
LVL 57
ID: 37705367
Also you want to use:

cltDisplay.Value =

or simply

cltDisplay =

Not cltDisplay.text

Jim.
0
 
LVL 46

Expert Comment

by:Martin Liss
ID: 37705419
JDettman makes some good suggestions about debugging your code. Here's a link to an article I wrote about using the Debug facility. It's aimed at VB6 but most of it should apply to VBA.
0
Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

 
LVL 1

Accepted Solution

by:
jriggin earned 0 total points
ID: 37705989
Thanks, guys., but I know how to debug VB.

The issue was a typo. case closed.
0
 
LVL 57
ID: 37706993
For furture readers of the thread, it would be good if you indicated exactly what the typo was and the fix.

Jim.
0
 
LVL 1

Author Comment

by:jriggin
ID: 37707263
oops!

definition in declaration:  ByVal ctlDisplay As Control
typo in code If Not IsEmpty(cltDisplay)

Sorry for not noticing my fat fingered code before crying for help - I also forgot to use "option explicit" (which should NOT be optional) in the IDE would have picked it up.
0
 
LVL 1

Author Closing Comment

by:jriggin
ID: 37723935
solved myself
0

Featured Post

Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Enums (shorthand for ‘enumerations’) are not often used by programmers but they can be quite valuable when they are.  What are they? An Enum is just a type of variable like a string or an Integer, but in this case one that you create that contains…
Overview: This article:       (a) explains one principle method to cross-reference invoice items in Quickbooks®       (b) explores the reasons one might need to cross-reference invoice items       (c) provides a sample process for creating a M…
What’s inside an Access Desktop Database. Will look at the basic interface, Navigation Pane (Database Container), Tables, Queries, Forms, Report, Macro’s, and VBA code.
In Microsoft Access, learn different ways of passing a string value within a string argument. Also learn what a “Type Mis-match” error is about.

919 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now