Depends what Robert wants, but
StretchDraw won't give you anything like the resampling quality of a
decent resampling algorithm such as a Lanczos Kernel. If you want to
see the difference without writing code, check out the freeware
Irfanview image utility (www.irfanview.com) and try
resizing an image using the various resampling algorithms available in
that utility.
One thing that I think a lot of
people overlook is that a file format is just that: a file format.
Once one has loaded an image from a file of a particular format,
then the image in memory is simply a bitmapped image (or a raster image
or whatever). At that point, it's completely divorced from the file
format it happened to be last persisted in.
C.
I have a neat
program that can picks a JPG file, converts JPG to BMP and back and
resize it at will too.
The trick is that
you can resize as a BMP, but save back as a JPG
Can email the rest
of the project, but here is the main unit to show its not hard to do...
This program zooms a
bevel in and out to show the size of the image will be when resized,
but does not actually resize until you click resize now, as the image
would lose quality by being continuously resized.
Its all done by
about 4 lines in the ResizeNow procedure
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