dealing with images of varing sizes on a form.

23 Feb 2006 11:11 PM

Aussie Rules

Hi,

I have an application that allows a user to select a jpg/gif file and
display them in a picture box.

The issue is that the pictures are of course different sizes, and therefore
they need to be resized some how to fit the space the picturebox uses on the
form.

Setting the picture boxs size mode to stretch just makes the picture look
silly, and users don't like it. There is not an option like best fit which
would scale the picture, but keep its org perspective....

Whats the best way to deal with this ????

Thanks

24 Feb 2006 12:11 AM

Dennis

I use the routine below to size my image to a maximum size that fits in the
picture box yet retains the proportions. Note that MxSz is the original size
of the picture box. After the call to this routine, the image and picure box
can be resized to the returned size.

Public Function get_NewImgSize(ByVal OldImage As Image, ByVal MxSz As Size)
As Size
        Dim w As Integer = OldImage.Width
        Dim h As Integer = OldImage.Height
        Dim nw, nh As Integer
        Dim pctw As Double = MxSz.Width / w
        Dim pcth As Double = MxSz.Height / h
        Dim wtoh As Double = w / h

        If pctw < pcth Then
            nw = CInt(pctw * w)
            nh = CInt(pctw * h)
        Else
            nw = CInt(pcth * w)
            nh = CInt(pcth * h)
        End If

        Return New Size(nw, nh)
    End Function

--
Dennis in Houston

Show quoteHide quote

"Aussie Rules" wrote:

> Hi,
>
> I have an application that allows a user to select a jpg/gif file and
> display them in a picture box.
>
> The issue is that the pictures are of course different sizes, and therefore
> they need to be resized some how to fit the space the picturebox uses on the
> form.
>
> Setting the picture boxs size mode to stretch just makes the picture look
> silly, and users don't like it. There is not an option like best fit which
> would scale the picture, but keep its org perspective....
>
> Whats the best way to deal with this ????
>
> Thanks
>
>
>

24 Feb 2006 9:23 AM

Gary Chang[MSFT]

Hi Aussie,

>Whats the best way to deal with this ????

I also found some articles about resizing image in .NET, wish it helps:

Resizing a Photographic image with GDI+ for .NET
http://www.codeproject.com/csharp/imageresize.asp

Image Processing for Dummies with C# and GDI+ Part 4 - Bilinear Filters and
Resizing
http://www.codeproject.com/cs/media/imageprocessing4.asp

Thanks!

Best regards,

Gary Chang
Microsoft Community Support
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