[Class] WithEvents level

[ALESSANDRO Baraldi]

Hi all.

I try to build a Class sistem to validate the control
on a PrincipalForm/SubForm/SubSubForm

Development:

1 clsControls as CollectionClass
1 clsTextBox
1 clsCombo
1 clsListBox

On a clsControls(collectionClass) i build a recursive
function like this:

' ObjectClass Declarations
Private m_Form As Access.Form ' The Form containing the
controls
Private colControls As New Collection ' Collection for control
classes
Private cTBox As clsTextBox ' TextBox class
Private cCbo As clsComboBox ' Combo class
Private cLbo As clsListBox ' ListBox class

Private Function Create(frm As Access.Form)

Dim ctl As Access.Control

For Each ctl In frm.Controls
If ctl.Tag = m_TAG Then
Select Case ctl.ControlType

Case acTextBox
Set cTBox = New clsTextBox
cTBox.SetTarget ctl
colControls.Add cTBox
Set cTBox = Nothing

Case acComboBox
Set cCbo = New clsComboBox
cCbo.SetTarget ctl
colControls.Add cCbo
Set cCbo = Nothing

Case acListBox
Set cLbo = New clsListBox
cLbo.SetTarget ctl
colControls.Add cLbo
Set cLbo = Nothing

Case acSubform
Create ctl.Form

End Select
End If
Next ctl

End Function

On clsTextBox/comboBox/ListBox i have a Function "SetTarget"
wich generate Control_BeforeUpdate = "[Event Procedure]"
and inside Class i put a MSGBOX(for now on Before Update to check it)

If i have Form/SubForm only all work very good, all my Events are detected
in every two Forms and in every controlType.

If i add the 3° level SUbSubForm, the recoursive Function add correctly the
news 3° Level Controls on Collection, to check it i cycle trought it and all
OK,
but no Events are detected for the 3° Level SubSubForm Controls

What could made this problem ...?
It's Normal one or i made some mistake...?

Thanks for help

 

[ALESSANDRO Baraldi]

I find the problem, but is strange one.

If the SubSubForm!Controls Have alrady the Events(BeforeUpdate)
on the Module don't work.

I thought that that executed First FormEvent Then Istance one.

Isn't it..?

 

[Stephen Lebans]

Alessandro could it have anything to do with the order in which the Load
event for each Subform happens? It's not a logical order if I remember
correctly.
I have only ever used WithEvents on Subforms a single level deep not the
double level you describe.
--

HTH
Stephen Lebans
http://www.lebans.com
Access Code, Tips and Tricks
Please respond only to the newsgroups so everyone can benefit.

 

[ALESSANDRO Baraldi]

Alessandro could it have anything to do with the order in which the Load
event for each Subform happens? It's not a logical order if I remember
correctly.
I have only ever used WithEvents on Subforms a single level deep not the
double level you describe.
--

HTH
Stephen Lebans
http://www.lebans.com
Access Code, Tips and Tricks
Please respond only to the newsgroups so everyone can benefit.

Hi Stephen nice to meet you...!

Really i try to built oriented Object sistem to validate on nonlimited
level the Form's Control Value.

So i see that:

If no EVENTS are apply to the Code when i apply "[Event Procedure]"
Runtime by code on Object Class WithEvens Variable all work good.

If on SubForm i have a Code(for Ex on BeforeUpdate") my Event intercepting
procedure work only to the 2° Level, on 3° fail.

This is strage problem...!

Now i remove all Fix [Event Procedure] of any controls in each level Form
and my Classes work very fine.

I build a flexible EventSetting and multiple programmable Validate control
Events.
To return on Principal Form the Validate Action i Implements a special Class
on Principal One and on ObjectClass_Istance i Call the Istance of this
Special Class
that Callback Principal Form.

I don't know if this is clear, my bad english don't help me to make it
easy...! ;-)

This project is for a Tecnical DEMO for my Access WebSite(wich link also
your web with your
permission from 2 years) and for Italian Access WebSite more famous than
mine,
if you want see it would be a big pleasure.

Bye good week end.