Zoompicbox
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Bob Powell [MVP]
Visual C#, System.Drawing
Ramuseco Limited .NET consulting
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[quoted text, click to view] BobRoyAce wrote:
> I have an application that allows users to view JPG images that were
> previously scanned. In one part of the application, the users are wanting to
> view an image such that they can zoom in on a particular section of the JPG
> so as to interrogate address information contained therein. I was just
> showing the images using an Image control, and, when the user double-clicked
> on the the image, I would just open up the image in whatever default
> application was specified on the PC to open up JPGs. Then, from there, they
> could zoom in as they wished. This solution is not efficient and I need to
> come up with something more elegant. Soooo...
>
> What I want to do is use some other control (third-party I'm imagining) on
> the image viewing form such that users could zoom in and out on sections of
> the images to their hearts content without opening the image up in some other
> application. Any recommendations as to how I could accomplish this using a
> standard image control? Alternatively, could you suggest any third party
> controls that would allow this? Ideally, I would like the users to be able to
> do things like:
> 1) zoom in/out by certain % (e.g. 50%, 100%, 200%, fit width, fit height,
> fit page, etc.)
> 2) click and drag to select an area of the image to zoom in on
> 3) change mouse to magnifying glass such that whatever area is centered
> under mouse cursor (with certain specified dimensions) would be magnified to
> some magnification level (e.g. 200%) which is user settable
> 4) use the mousewheel to zoom in/out by certain % increments (e.g. each
> click up increases zoom level by 25%), zooming in on whatever part of the
> image is currently under the mouse cursor if relevant.
>
> Lastly, and this would be really cool, I'd love it if I could allow a user
> to select an image (say, in a list of filenames), and then have two images
> that would show on the form, each one a zoomed in version of a portion of the
> selected image. All of the images I'm dealing with are scans of identical
> forms that were filled in by hand and should, for the most part be the same
> size and shape. The address information that the users need to interrogate is
> always in the same two areas of these forms. A solution (probably a component
> collection) that could accomplish this, as well as above, would be way cool.
>
