NobleBell
Tue Jan 29 13:48:06 CST 2008
Right you are. Darn, I forgot about the conversion to bitmap first.
--
Noble D. Bell
www.noblesoftware.com
"<ctacke/>" wrote:
> 800x600 is a lot more than just a few k smaller than 1600x1200. Let's
> assume the image is only 16bpp color depth (and it could be 24).
>
> 800x600 = 240,000 pixels * 2 byes per pixel = 480k bitmap;
> 1600x1200 = 1,920,000 pexels * 2 bytes per pixel = 4MB bitmap;
>
> If you have 4 of these then we're talking 16MB needed just to hold the
> bitmaps you want to show. I can see how that might cause an OOM.
>
> Remember, the PictureBox can't "display" a raw JPG, it has to be
> uncompressed to a bitmap to be shipped to GDI and displayed. That's not a
> "managed" thing either, this is the case for any image created under any
> environment and really under any OS (unless there is a hardware decoder
> somewhere in the pipeline, but that's outside the scope of what we're
> talking about here).
>
>
> --
>
> Chris Tacke, eMVP
> Join the Embedded Developer Community
>
http://community.opennetcf.com
>
>
>
> "Noble Bell" <NobleBell@discussions.microsoft.com> wrote in message
> news:A26D73F2-5F84-427C-BD0B-AF04CD0734BB@microsoft.com...
> >I have an app with 4 picture box controls on it and I need to load images
> > into the picture boxes. I have the picture boxes set to 216,162 in size
> > and
> > the property set to "Stretch Image". While loading image sizes of 800x600
> > there is not a problem but when I try to load an image size that is
> > 166x1200
> > everything blows up and tells me it is throwing an out of memory error.
> > How
> > can this be when the 800x600 image is only a few "k" smaller in size than
> > the
> > 1600x1200 image?
> >
> > Thanks in advance,
> >
> > --
> > Noble D. Bell
> > www.noblesoftware.com
> >
>
>
>