Vista - Zoom support in custom control

04-29-2009

Hi,
I have a custom control and it displays various data. I want to provide the
feature of Zoom in and Zoom out for the custom control.

Is it possible to do this without modifying all the existing drawing code
and draw according to the zoom level.

I tried to change the scale by calling CustomControl.Scale method but it
doesn't work.

Any ideas??

Regards,
Ashu

04-29-2009

On Apr 29, 10:35*am, Ashutosh <smbs-m...@xxxxxx> wrote:

Quote:

> Is it possible to do this without modifying all the existing drawing code
> and draw according to the zoom level.

If you already have drawing code then it's pretty easy to just insert
a matrix transformation in your paint handler. However if your
control contains other controls then the issue is a bit more
difficult.

04-29-2009

"Ashutosh" <smbs-msdn@xxxxxx> wrote in message
news:6632EF36-3B73-4AE5-971E-819C91768060@xxxxxx

Quote:

> I have a custom control and it displays various data. I want to provide
> the
> feature of Zoom in and Zoom out for the custom control.
>
> Is it possible to do this without modifying all the existing drawing code
> and draw according to the zoom level.
>
> I tried to change the scale by calling CustomControl.Scale method but it
> doesn't work.

You'll probably have to modify your drawing code a little bit. All it should
require is calling the ScaleTransform() method of your Graphics object.

04-29-2009	#1 (permalink)
Ashutosh n/a posts	Zoom support in custom control Hi, I have a custom control and it displays various data. I want to provide the feature of Zoom in and Zoom out for the custom control. Is it possible to do this without modifying all the existing drawing code and draw according to the zoom level. I tried to change the scale by calling CustomControl.Scale method but it doesn't work. Any ideas?? Regards, Ashu
My System Specs

04-29-2009	#2 (permalink)
Israel n/a posts	Re: Zoom support in custom control On Apr 29, 10:35*am, Ashutosh <smbs-m...@xxxxxx> wrote: Quote: > Is it possible to do this without modifying all the existing drawing code > and draw according to the zoom level. If you already have drawing code then it's pretty easy to just insert a matrix transformation in your paint handler. However if your control contains other controls then the issue is a bit more difficult.
My System Specs

04-29-2009	#3 (permalink)
Jeff Johnson n/a posts	Re: Zoom support in custom control "Ashutosh" <smbs-msdn@xxxxxx> wrote in message news:6632EF36-3B73-4AE5-971E-819C91768060@xxxxxx Quote: > I have a custom control and it displays various data. I want to provide > the > feature of Zoom in and Zoom out for the custom control. > > Is it possible to do this without modifying all the existing drawing code > and draw according to the zoom level. > > I tried to change the scale by calling CustomControl.Scale method but it > doesn't work. You'll probably have to modify your drawing code a little bit. All it should require is calling the ScaleTransform() method of your Graphics object.
My System Specs

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