larger Windows Icon images

[Christ Kennedy]

I'm writing a FileDialog-GUI and using icons

_bmp = new Bitmap(recArea.Width, recArea.Height);
using (Graphics g = Graphics.FromImage(_bmp))
{
g.FillRectangle(cParentRegion.brBackground, new RectangleF(0, 0, _bmp.Width, _bmp.Height));
Icon icoFile = classFileIcons.Search(cTI.fileInfo.Extension);
if (icoFile == null)
{
icoFile = System.Drawing.Icon.ExtractAssociatedIcon(cTI.fileInfo.FullName);//.ToBitmap();
if (icoFile != null)
classFileIcons.Insert(cTI.fileInfo.Extension, ref icoFile);
else
;
}
bmpFile = (Bitmap)icoFile.ToBitmap();
g.FillRectangle(cParentRegion.brBackground, new RectangleF(0, 0, recArea.Width, recArea.Height));
double dblAspectRatio = (double)bmpFile.Height / (double)bmpFile.Width;
if (dblAspectRatio > 1)
{ // height is limiting factor
Rectangle recSource = new Rectangle(0, 0, bmpFile.Width, bmpFile.Height);
Rectangle recDest = new Rectangle(0, 0, (int)((double)szIcon.Height / dblAspectRatio), szIcon.Height);
g.DrawImage(bmpFile, recDest, recSource, GraphicsUnit.Pixel);
g.DrawString(cTI.strName, cParentRegion.font, cParentRegion.brForeground, ptTextLocation);
}
else
{ // width is limiting factor
Rectangle recSource = new Rectangle(0, 0, bmpFile.Width, bmpFile.Height);
Rectangle recDest = new Rectangle(0, 0, szIcon.Width, (int)((double)szIcon.Width * dblAspectRatio));
g.DrawImage(bmpFile, recDest, recSource, GraphicsUnit.Pixel);
g.DrawString(cTI.strName, cParentRegion.font, cParentRegion.brForeground, ptTextLocation);
}
bmpFile = null;
g.DrawString(cTI.strName, cParentRegion.font, cParentRegion.brForeground, ptTextLocation);
}

as you can see in the image below, when the user selects 'Large Icons' the resultant images are blurry because the source image is so small.



Are there larger icon source images available?



my code is perfect until i don't find a bug

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