resize events on windows form

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Tarren - 23 Apr 2008 15:28 GMT

Hi:

I am trying to get access to the event after a window has been resized. The
events I have been using SizeChanged and Resize all fire after any pixel
size change.

What I am trying to achieve is after the window has been dragged to a new
size (or maximized/restored) then I redraw the images within the form.

If I do it on Resize, then it tries to redraw as the form is being resized,
which is not what I want. Is there some way I can get to the event and fire
only after they are done resizing?

Thanks.

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zacks@construction-imaging.com - 23 Apr 2008 15:44 GMT

> Hi:
>
[quoted text clipped - 8 lines]
> which is not what I want. Is there some way I can get to the event and fire
> only after they are done resizing?

Set a flag (boolean variable) to true in the Resize event. Then, in
the MouseUp event, check the flag. If true, reset to false, and
perform your resizing code.

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Tarren - 23 Apr 2008 16:06 GMT

thanks! I will try that out

On Apr 23, 10:28 am, "Tarren" <noemailple...@thanks.com> wrote:

> Hi:
>
[quoted text clipped - 11 lines]
> fire
> only after they are done resizing?

Set a flag (boolean variable) to true in the Resize event. Then, in
the MouseUp event, check the flag. If true, reset to false, and
perform your resizing code.

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Andrus - 23 Apr 2008 18:43 GMT

> Set a flag (boolean variable) to true in the Resize event. Then, in
> the MouseUp event, check the flag. If true, reset to false, and
> perform your resizing code.

Why you recommend so sophisticated solution ?

Form has ResizeEnd event which is designed for this. So your trick is not
required.

Andrus.

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zacks@construction-imaging.com - 23 Apr 2008 19:04 GMT

> > Set a flag (boolean variable) to true in the Resize event. Then, in
> > the MouseUp event, check the flag. If true, reset to false, and
[quoted text clipped - 4 lines]
> Form has ResizeEnd event which is designed for this. So your trick is not
> required.

I was not familiar with the ResizeEnd event.

If nothing else, it would be a good exercise to do. Helps to
understand form event handling.

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Peter Duniho - 23 Apr 2008 17:58 GMT

> [...]
> If I do it on Resize, then it tries to redraw as the form is being
> resized, which is not what I want. Is there some way I can get to the
> event and fire only after they are done resizing?

Yes. Handle the ResizeEnd event instead of Resize or SizeChanged.

Pete

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Charles Calvert - 23 Apr 2008 23:40 GMT

>> [...]
>> If I do it on Resize, then it tries to redraw as the form is being
>> resized, which is not what I want. Is there some way I can get to the
>> event and fire only after they are done resizing?
>
>Yes. Handle the ResizeEnd event instead of Resize or SizeChanged.

Note that if you're handling this in the form class itself, you should
override OnResizeEnd instead. The documentation states "The
OnResizeEnd method also allows derived classes to handle the event
without attaching a delegate. This is the preferred technique for
handling the event in a derived class."

Signature

Charles Calvert | Software Design/Development
Celtic Wolf, Inc. | Project Management
http://www.celticwolf.com/ | Technical Writing
(703) 580-0210 | Research

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resize events on windows form

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