compactframework, Directional Pad Scrolling

microsoft.public.dotnet.framework.compactframework - Microsoft .NET technology


compactframework >> Directional Pad Scrolling

by UEI » Wed, 27 Jul 2005 10:00:03 GMT

I am trying to handle the Directional Pad available on Dells and HPs. Many of
the posts here and elsewhere indicated these donot have to be registered
(like the other 4 hardware buttons by the app), and they generate the regular
KeyDown & KeyUp Events (w/ up-down key codes).
I am using .NET CF SP3 and still cannot get these events fired in my custom
control. Any ideas why this is happening? MS says in SP2 release notes that
Key events are now enabled on controls too.
The event is fired in a form but not in my custom control.

Thanks
PB.
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compactframework >> RE: Directional Pad Scrolling

by UEI » Thu, 28 Jul 2005 09:56:04 GMT


I found the problem!
Apparently, the control that I was expecting to get the KeyDown event did
not have focus. And so the event was not fired at this control.
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compactframework >> Directional Pad Scrolling

by Daniel Moth » Thu, 28 Jul 2005 17:19:02 GMT

Well done and thanks for the update! Just fyi, with netcf v2.0 you'll be
able to set the Form.KeyPreview property to true which could help in
scenarios like this...

Cheers
Daniel
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Xin,

My app need the ability to handle the up/down arrow keys at the form
level -- just like Jono's app. I'm no expert in such things, but I believe
your answer is not quite the whole story.

I thought the KeyDown event handler wouldn't work for "special" keys like
up/down arrows because those keys are first examined by the control with the
focus. These keys are handled by the control and not passed up the line to
the form.

In the full framework the form's KeyPreview property is just the ticket for
this sort of thing. Unfortunately, it's not available in the CF. AFAIK the
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In this method you would have to permit the "special" keys to pass up the
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If there is a simpler technique to simulate KeyPreview, I'd love to hear
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Thanks.
Richard Kucia

"Xin Yan" < XXXX@XXXXX.COM > wrote in message
news: XXXX@XXXXX.COM ...
> Use Form.KeyDown event handler.
> Thanks
> Xin
> --------------------
> | Content-Class: urn:content-classes:message
> | From: "Jono" < XXXX@XXXXX.COM >
> | Sender: "Jono" < XXXX@XXXXX.COM >
> | Subject: Directional buttons on Pocket PC device
> | Date: Tue, 10 Jun 2003 11:25:16 -0700
> | Lines: 8
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> |
> | How can i programmably access the directional buttons on
> | the Pocket PC devices? I'm using VS 2003 with .net
> | compact framework.
> |
> | Another question, are the mouse events [especially mouse-
> | down] valid for picturebox when deploying the program
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> | emulator.
> |
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Dear Ying-Shen Yu,
I believe this would work in the case of communication from the embedded IE .NET control to IE itself.

Therefore your code sample:
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[DispIdAttribute(0x60020001)]
void MyByteEvent( ref byte[] bytes);

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""Ying-Shen Yu[MSFT]"" wrote:

> Hi,
> 
> have you tried defining the method in your event source interface like 
> below:
> 
> [DispIdAttribute(0x60020001)]
> void MyByteEvent( ref byte[] bytes);
> 
> It works fine in VB6, please feel free to reply this thread if it does not 
> work in script languages.
> Thanks!
> 
> Best regards, 
> 
> Ying-Shen Yu [MSFT]
> Microsoft Community Support
> Get Secure! - www.microsoft.com/security
> 
> This posting is provided "AS IS" with no warranties and confers no rights.
> This mail should not be replied directly, please remove the word "online" 
> before sending mail.
> 
>

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