Panning and zooming image in Pocket PC

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C#

Hi all!
I want to write a project for viewing image on pocket pc. I try to googling, and I knew that .Net CF didn't support GDI+. There are some project about panning and zooming on Net Framework but it only worked on GDI+. I tried to use code bellow to resize image:

public static Image Resize(Image image, Size size)
{
    Image bmp = new Bitmap(size.Width, size.Height);
    using (var g = Graphics.FromImage(bmp))
    {
        g.DrawImage(
            image,
            new Rectangle(0, 0, size.Width, size.Height),
            new Rectangle(0, 0, image.Width, image.Height),
            GraphicsUnit.Pixel);
    }
    return bmp;
}

I had some problems with them. With image 800x600 or 1024x768, it worked very slowly and threw exception out of memory. About panning, I see this link http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/5823e285-6999-40f5-b28a-74480a0acb13 but mouse.Location seems not appear in Net CF.
This link http://www.codeproject.com/KB/graphics/PanZoom2.aspx?msg=3876775#xx3876775xx is very excited but it didn't work on .Net CF.
Any suggestion for me?
Thank you very much..Phewww