UserControl - Painting in Control-Designer

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Karsten Sosna - 23 Dec 2006 05:57 GMT

Hello NG,
hope i have a little problem. I have a usercontrol thats paint itself in
OnPaint-Method. It works at runtime and at designtime on forms or other
controls. So i need a way to paint the control in the Control-Designer.

Thanks for help and informations.
--
Regards Karsten

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Bob Powell [MVP] - 28 Dec 2006 07:18 GMT

Hi Karsten,
User controls should paint quite happily in the control designer.
Perhaps I'm not understanding the question. Could you expand upon it a
little?

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> Hello NG,
> hope i have a little problem. I have a usercontrol thats paint itself in
[quoted text clipped - 4 lines]
> --
> Regards Karsten

Reply to this Message

Karsten Sosna - 29 Dec 2006 11:15 GMT

> User controls should paint quite happily in the control designer. Perhaps
> I'm not understanding the question. Could you expand upon it a little?

Hello Bob,
if i create new UserControl(Projekt >> Add new usercontrol) it opens the
ControlDesigner and i can add e.g. Button, Label or something else. Now, if
i want is, then i take some Graphics-Op's in the UserControl, like
PaintBackground, i want to see the changes in the ControlDesigner. Like if
you add the Control on a Form. I read thats possible with implementing a
ControlDesigner-Class, but there are no samples.

Hope this was better. Sorry my english is very bad.

Regards Karsten

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Bob Powell [MVP] - 31 Dec 2006 15:21 GMT

Unfortunately this is not possible. While you're writing the behaviours
of the user control the code isn't compiled and the designer actually
uses an ordinary user control to host the child controls. The OnPaint
override etc will not run.

To debug the overrides in your control you need to run it in some sort
of host. VS2005 provides a new control host for this purpose but I find
that even this is not sufficient sometimes.

See my site for an article on how to debug controls and user controls
using a second instance of VS.

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>> User controls should paint quite happily in the control designer. Perhaps
>> I'm not understanding the question. Could you expand upon it a little?
[quoted text clipped - 10 lines]
>
> Regards Karsten

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UserControl - Painting in Control-Designer

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