TheBlakeE
asked on
EVAL calling procedure 3 times
Hi. This is my first question, so forgive me if I don't do it right.
I'm alternating between Access 2000 and Access 97, and have the same problem in both versions. I have a form with several checkboxes (check1, check2, and check3 for testing), and I want to call a corresponding procedure programmatically if the checkbox is checked. Through research, I discovered that I should use the "Eval" function. Here is the code I put together:
Private Sub Command0_Click()
Dim ctlName As Control
Debug.Print "***Start***"
For Each ctlName In Me.Controls
If TypeOf ctlName Is CheckBox Then
If ctlName.Value = -1 Then
Eval ("Forms!Form1." & Mid(ctlName.Name, 4))
End If
End If
Next ctlName
Debug.Print "***End***"
End Sub
Public Sub ck1()
Debug.Print "Check1"
End Sub
Public Sub ck2()
Debug.Print "Check2"
End Sub
Public Sub ck3()
Debug.Print "Check3"
End Sub
The only problem with this code is that it runs each procedure 3 times. Here are my results when boxes 1 and 3 are checked:
***Start***
Check1
Check1
Check1
Check3
Check3
Check3
***End***
When stepping through the program, it does not return to the Command0_Click procedure before repeating the ck# procedure. When it is done with ck1, it goes directly from "End Sub" to "Public Sub ck1()" again.
I would ask "can anyone help?", but I KNOW that someone at Experts-Exchange can. :)
Thanks,
Blake
I'm alternating between Access 2000 and Access 97, and have the same problem in both versions. I have a form with several checkboxes (check1, check2, and check3 for testing), and I want to call a corresponding procedure programmatically if the checkbox is checked. Through research, I discovered that I should use the "Eval" function. Here is the code I put together:
Private Sub Command0_Click()
Dim ctlName As Control
Debug.Print "***Start***"
For Each ctlName In Me.Controls
If TypeOf ctlName Is CheckBox Then
If ctlName.Value = -1 Then
Eval ("Forms!Form1." & Mid(ctlName.Name, 4))
End If
End If
Next ctlName
Debug.Print "***End***"
End Sub
Public Sub ck1()
Debug.Print "Check1"
End Sub
Public Sub ck2()
Debug.Print "Check2"
End Sub
Public Sub ck3()
Debug.Print "Check3"
End Sub
The only problem with this code is that it runs each procedure 3 times. Here are my results when boxes 1 and 3 are checked:
***Start***
Check1
Check1
Check1
Check3
Check3
Check3
***End***
When stepping through the program, it does not return to the Command0_Click procedure before repeating the ck# procedure. When it is done with ck1, it goes directly from "End Sub" to "Public Sub ck1()" again.
I would ask "can anyone help?", but I KNOW that someone at Experts-Exchange can. :)
Thanks,
Blake
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well, Arthur did best.
ASKER
Arthur, that's basically the way I was doing it originally, but in the end I'm going to have several hundred checkboxes on my form, so I got tired of having to add another little piece of code for each box.
I searched and searched. I can't even remember all the commands I tried. I remember "Run", and "Call", and "RunCommand", "CallbyName", and... something related to "Execute". Some of them gave me errors, but most just didn't do anything. If you could give me code for "CallbyName", I'd be happy to try it again.
Eventually, I stumbled across "Eval" when looking for something else. Here's the thread:
https://www.experts-exchange.com/questions/10158330/Calling-public-procedure-from-form.html
And it actually worked, so I was thrilled... but I later discovered that it's repeating each procedure 3 times.
Thanks,
Blake
I searched and searched. I can't even remember all the commands I tried. I remember "Run", and "Call", and "RunCommand", "CallbyName", and... something related to "Execute". Some of them gave me errors, but most just didn't do anything. If you could give me code for "CallbyName", I'd be happy to try it again.
Eventually, I stumbled across "Eval" when looking for something else. Here's the thread:
https://www.experts-exchange.com/questions/10158330/Calling-public-procedure-from-form.html
And it actually worked, so I was thrilled... but I later discovered that it's repeating each procedure 3 times.
Thanks,
Blake
"....but in the end I'm going to have several hundred checkboxes ...."
Then, create an array of checkboxes control and
Dim i As Integer
For i = 0 To Check1.Count - 1
If Check1(i).Value = 1 Then
MsgBox Check1(i).Caption' or run your sub
End If
Next i
Then, create an array of checkboxes control and
Dim i As Integer
For i = 0 To Check1.Count - 1
If Check1(i).Value = 1 Then
MsgBox Check1(i).Caption' or run your sub
End If
Next i
What kind of application requires several hundred checkboxes? As A user, I would find that extremely annoying, as well as being VERY confusing. But then that is just me, I'm kinda funny that way.
AW
AW
ASKER
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Richie, I went ahead and tried CallbyName again:
CallByName Me, "Form1!" & Mid(ctlName.Name, 4), VbMethod
I also tried
CallByName Me, "Forms!Form1." & Mid(ctlName.Name, 4), VbMethod
but both gave me "Application-defined or object-defined error"
---Blake
P.S. but then I kept persisting with CallByName, and eventually I did it without reference to the Form, as in:
CallByName Me, Mid(ctlName.Name, 4), VbMethod
And it WORKED! Yay!
Thanks, Richie. :)
---Blake
Richie, I went ahead and tried CallbyName again:
CallByName Me, "Form1!" & Mid(ctlName.Name, 4), VbMethod
I also tried
CallByName Me, "Forms!Form1." & Mid(ctlName.Name, 4), VbMethod
but both gave me "Application-defined or object-defined error"
---Blake
P.S. but then I kept persisting with CallByName, and eventually I did it without reference to the Form, as in:
CallByName Me, Mid(ctlName.Name, 4), VbMethod
And it WORKED! Yay!
Thanks, Richie. :)
---Blake
since you KNOW that names of the procedures that are supposed to be executed for each of the CheckBoxes:
If ctlName.Value = -1 Then
Select Case ctlName.Name
Case "Check1"
call chk1
case "Check2"
call chk2
Case "Check3"
call chk3
Case Else
MsgBox "Some INVALID check Box was clicked", VBokOnly
End Select
End If
not very pretty but that is the 'cleanest' way to accomplish what you are trying to do.
Aw