I compiled and ran the sample code from the GDI+ FAQ found here:

http://www.bobpowell.net/bestfit.htm

The program worked correctly for GIF and BMP files, but when I tried a JPG, it
appeared to translate, but not scale (the height of the image I was using was
roughly twice that of the form: only the top half of the image was visible). Is
this a known problem with JPEG files? Is there a workaround?

Thanks.

---
Greg Chapman

On Mon, 24 Jan 2005 17:33:23 +0100, "Bob Powell [MVP]"
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Thanks! That fixed it. By the way, both the Horizontal and VerticalResolution
are 72 for the image I was testing. My screen resolution
(GetDeviceCaps(,LOGPIXELSY)) is 120. I gather that the simple (3 param)
DrawImage will cause problems whenever these are different? (I gather that
because I found a Jpeg with 120x120 resolution, and that displayed correctly
using the 3 param DrawImage).

---
Greg Chapman

Try changing the last line of the paint handler to:

e.Graphics.DrawImage(_image,new
Rectangle(0,0,_image.Width,_image.Height),0,0,_image.Width,_image.Height,GraphicsUnit.Pixel);

It may be that the resolution on the JPEG is set to something odd that is
messing up the draw command.

--
Bob Powell [MVP]
Visual C#, System.Drawing

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