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From: zzz on 4 Feb 2010 12:04
Hello,
Ive created a serial port instance on a module. In the same module I have
the sub data_received.

Now I'd like to update a control in a form, how can I do it?
Thanks in advance


From: Armin Zingler on 4 Feb 2010 19:36
zzz schrieb:
> Hello,
> Ive created a serial port instance on a module. In the same module I have
> the sub data_received.
>
> Now I'd like to update a control in a form, how can I do it?
> Thanks in advance

Why don't you declare the serialport variable in the Form?
If you want to keep it in the module, you can declare the
variable public (or as a public readonly property) and handle
the object's event in the Form.

--
Armin
From: zzz on 5 Feb 2010 04:33

"Armin Zingler" <az.nospam(a)freenet.de> ha scritto nel messaggio news:%23Z78otfpKHA.4648(a)TK2MSFTNGP06.phx.gbl...
>

> Why don't you declare the serialport variable in the Form?
> If you want to keep it in the module, you can declare the
> variable public (or as a public readonly property) and handle
> the object's event in the Form.

I'd like to have the seialport declared in a module.
I've this code:

Module1

Public my_object As Object

Public WithEvents MySerialPort3 As New MySerialPort
Private Sub MySerialPort3_dato_ricevuto(ByVal tipo_scatenante As MySerialPort.tipo_dato) Handles MySerialPort3.dato_ricevuto

Select Case tipo_scatenante
Case MySerialPort.tipo_dato.versione

Case MySerialPort.tipo_dato.dati
Select Case (MySerialPort3.data_received.data)
Case PEDALE_ON
is_pedale_premuto = True
Case PEDALE_OFF
is_pedale_premuto = False
Case Asc("-"), Asc("+")
esegui.VarPower(Chr(MySerialPort3.data_received.data)) '<--esegui is a form but it seems that a new instance is created.....In the main form i call it using esegui.showdialog
End Select
End Select
End Sub
End module
----------------------------------------------------------
I've also tried to add this code in the main form

my_object = esegui' <- I store the information in this global variable declared in the module
my_object.ShowDialog()

In the module i have replaced
esegui.VarPower(Chr(MySerialPort3.data_received.data))
with
my_object.VarPower(Chr(MySerialPort3.data_received.data))
----------------------------------------------------------



From: zzz on 5 Feb 2010 05:04

"DickGrier" <dick_grierNOSPAM(a)msn.com> ha scritto nel messaggio
news:%23lL11FfpKHA.3792(a)TK2MSFTNGP06.phx.gbl...
> You need to use Control.BeginInvoke or .Invoke to update the UI via a
> Delegate. You can download the VB2005 Terminal example from my website,
> which illustrates this.
>

With serial port on form, I have no problem. I use Invoke and
delegate.....but using it on module I get issues...
Thanks .

PS: instead of using invok and delegate, could I access to a class if it is
shared?


From: Armin Zingler on 5 Feb 2010 06:26
zzz schrieb:
>
> "Armin Zingler" <az.nospam(a)freenet.de> ha scritto nel messaggio
> news:%23Z78otfpKHA.4648(a)TK2MSFTNGP06.phx.gbl...
>>
>
>> Why don't you declare the serialport variable in the Form?
>> If you want to keep it in the module, you can declare the
>> variable public (or as a public readonly property) and handle
>> the object's event in the Form.
>
> I'd like to have the seialport declared in a module.
> I've this code:
>
> [Code]

I've read the code, but what I meant was handling the event in the Form.
In the Form class, just add the eventhandler:

addhandler Module1.MySerialPort3.dato_ricevuto, addressof OnDataReceived

'...

sub OnDataReceived(ByVal tipo_scatenante As MySerialPort.tipo_dato)

'...

end sub



--
Armin
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