Inherited handler problem.

[kosecki]

Hi,

I've problem with button click handler.

In a short brief my program looks like this:

there is form invoice with is base class for invoice_edit form.

invoice form has public button "save" with modifers option set to
public

invoice_edit form has method which handles save.click and do some code

Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click

there is third form invoice_prod which inherits from invoice_edit and
also handles "save" button with this method declaration:

Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click

So, when I launch my invoice_prod:

invoice_prod.Sh owDialog() and click on "save" button involved with
public sub save_click from form invoice_edit executing.

Please help, how to execute method from invoice_prod form.

[aaron.kempf@gmail.com]

Re: Inherited handler problem.

personalyl I dont know who the hell came up with this syntax

Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click


that is TOO VERBOSE

move back to VB6
or change to PHP

-Aaron


kosecki wrote:

Hi,
>
I've problem with button click handler.
>
In a short brief my program looks like this:
>
there is form invoice with is base class for invoice_edit form.
>
invoice form has public button "save" with modifers option set to
public
>
invoice_edit form has method which handles save.click and do some code
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
there is third form invoice_prod which inherits from invoice_edit and
also handles "save" button with this method declaration:
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
So, when I launch my invoice_prod:
>
invoice_prod.Sh owDialog() and click on "save" button involved with
public sub save_click from form invoice_edit executing.
>
Please help, how to execute method from invoice_prod form.

[RobinS]

Re: Inherited handler problem.

I'm sorry, I'm confused. Is this right:

You have a base class form form called invoice_edit
that has a Save method in it.

You have a form that inherits from invoice_edit that
is called invoice. This has a "save" button on it.

You have a form that inherits from invoice_edit that
is called invoide_prod. This has a "save" button on it.

Is that right? So what's the problem exactly?

Robin S.
------------------------------------

"kosecki" <piotrkosinski@ gmail.comwrote in message
news:1164228951 .634318.300320@ m73g2000cwd.goo glegroups.com.. .

Hi,
>
I've problem with button click handler.
>
In a short brief my program looks like this:
>
there is form invoice with is base class for invoice_edit form.
>
invoice form has public button "save" with modifers option set to
public
>
invoice_edit form has method which handles save.click and do some code
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
there is third form invoice_prod which inherits from invoice_edit and
also handles "save" button with this method declaration:
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
So, when I launch my invoice_prod:
>
invoice_prod.Sh owDialog() and click on "save" button involved with
public sub save_click from form invoice_edit executing.
>
Please help, how to execute method from invoice_prod form.
>

[Cor Ligthert [MVP]]

Re: Inherited handler problem.

Kosecki,

Do you mean that you want to shadows the method of your last button?
http://msdn.microsoft.com/library/de...keyShadows.asp

Cor

"kosecki" <piotrkosinski@ gmail.comschree f in bericht
news:1164228951 .634318.300320@ m73g2000cwd.goo glegroups.com.. .

Hi,
>
I've problem with button click handler.
>
In a short brief my program looks like this:
>
there is form invoice with is base class for invoice_edit form.
>
invoice form has public button "save" with modifers option set to
public
>
invoice_edit form has method which handles save.click and do some code
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
there is third form invoice_prod which inherits from invoice_edit and
also handles "save" button with this method declaration:
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
So, when I launch my invoice_prod:
>
invoice_prod.Sh owDialog() and click on "save" button involved with
public sub save_click from form invoice_edit executing.
>
Please help, how to execute method from invoice_prod form.
>

[Master Programmer]

Re: Inherited handler problem.


aaron.kempf@gma il.com wrote:

personalyl I dont know who the hell came up with this syntax
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
>
that is TOO VERBOSE
>
move back to VB6
or change to PHP
>
-Aaron
>
>
kosecki wrote:

Hi,

I've problem with button click handler.

In a short brief my program looks like this:

there is form invoice with is base class for invoice_edit form.

invoice form has public button "save" with modifers option set to
public

invoice_edit form has method which handles save.click and do some code

Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click

there is third form invoice_prod which inherits from invoice_edit and
also handles "save" button with this method declaration:

Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click

So, when I launch my invoice_prod:

invoice_prod.Sh owDialog() and click on "save" button involved with
public sub save_click from form invoice_edit executing.

Please help, how to execute method from invoice_prod form.

[Phill W.]

Re: Inherited handler problem.

kosecki wrote:

Hi,
>
I've problem with button click handler.
>
In a short brief my program looks like this:
>
there is form invoice with is base class for invoice_edit form.
>
invoice form has public button "save" with modifers option set to
public
>
invoice_edit form has method which handles save.click and do some code
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
there is third form invoice_prod which inherits from invoice_edit and
also handles "save" button with this method declaration:
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
So, when I launch my invoice_prod:
>
invoice_prod.Sh owDialog() and click on "save" button involved with
public sub save_click from form invoice_edit executing.
>
Please help, how to execute method from invoice_prod form.

When inheriting visual classes, it is *far* better to provide an
Overridable method that performs each action, rather than attaching
event handlers. I haven't found any way of finding out which, if any,
event handlers exist for a given event and, if you can manipulate them
in code, you can't guarantee the order in which the event handlers might
run.

Going down the "overriding " route, you'd have something like this:

Class InvoiceForm
Protected WithEvents save As Button

Protected Overridable Sub OnSaveClick()
' Basic functionality goes here
End Sub

Private Sub save_Click( ... ) Handles save.Click
Me.OnSaveClick( )
End Sub

End Class

Class Invoice_Edit
Inherits InvoiceForm

Protected Overrides Sub OnSaveClick()
' *Alternative* functionality goes here

' ' To use the code in InvoiceForm.OnS aveClick, use
' MyBase.OnSaveCl ick()

End Sub

End Class

Class Invoice_Prod
Inherits Invoice_Edit

Protected Overrides Sub OnSaveClick()
' Alternative functionality goes here

' ' To use the code in Invoice_Edit.On SaveClick, use
' MyBase.OnSaveCl ick()

' NB: You cannot access /InvoiceForm/.OnSaveClick directly
End Sub

End Class

HTH,
Phill W.

[Phill W.]

Re: Inherited handler problem.

kosecki wrote:

Hi,
>
I've problem with button click handler.
>
In a short brief my program looks like this:
>
there is form invoice with is base class for invoice_edit form.
>
invoice form has public button "save" with modifers option set to
public
>
invoice_edit form has method which handles save.click and do some code
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
there is third form invoice_prod which inherits from invoice_edit and
also handles "save" button with this method declaration:
>
Public Sub save_Click(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles save.Click
>
So, when I launch my invoice_prod:
>
invoice_prod.Sh owDialog() and click on "save" button involved with
public sub save_click from form invoice_edit executing.
>
Please help, how to execute method from invoice_prod form.

When inheriting visual classes, it is *far* better to provide an
Overridable method that performs each action, rather than attaching
event handlers. I haven't found any way of finding out which, if any,
event handlers exist for a given event and, if you can manipulate them
in code, you can't guarantee the order in which the event handlers might
run.

Going down the "overriding " route, you'd have something like this:

Class InvoiceForm
Protected WithEvents save As Button

Protected Overridable Sub OnSaveClick()
' Basic functionality goes here
End Sub

Private Sub save_Click( ... ) Handles save.Click
Me.OnSaveClick( )
End Sub

End Class

Class Invoice_Edit
Inherits InvoiceForm

Protected Overrides Sub OnSaveClick()
' *Alternative* functionality goes here

' ' To use the code in InvoiceForm.OnS aveClick, use
' MyBase.OnSaveCl ick()

End Sub

End Class

Class Invoice_Prod
Inherits Invoice_Edit

Protected Overrides Sub OnSaveClick()
' Alternative functionality goes here

' ' To use the code in Invoice_Edit.On SaveClick, use
' MyBase.OnSaveCl ick()

' NB: You cannot access /InvoiceForm/.OnSaveClick directly
End Sub

End Class

HTH,
Phill W.