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Saving jpeg as bitmap

How do i save a bitmap as a jpeg, using a TImage.
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WarheaD
Asked:
WarheaD
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1 Solution
 
intheCommented:
hi
try this:
image1.picture.savetofile('c:\bmpasjpg.jpg');

Regards Barry
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rwilson032697Commented:
Barry: That is correct but Warhead will need to add teh jpeg unit from the D4 CD (in the info\Extras\jpeg directory on the CD)

Cheers,

Raymond.
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intheCommented:
hi
Raymond i just did this in d4(no jpg components) and it worked fine how come you have to add jpg unit ?
Regards Barry
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WarheaDAuthor Commented:
hi

i've already got the jpeg stuff in my delphi, but i dont have delphi on this machine so i'll get back later.

thanx
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rwilson032697Commented:
Barry: The jpeg code is not included in the TImage components by default (its pretty chunky and adds some 150k to your app). Try loading the .JPG files into TImage and see what happens.

Did it produce a JPEG file, or a BMP file with a JPG extension?

Raymond.
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intheCommented:
Sorry raymond you right without jpg it produce bmp with jpg extension
Regards Barry
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WarheaDAuthor Commented:
I'm back (a week later)

I have included the jpeg.dcu into my uses, but i still get a bitmap with jpeg extension.
When I do it the other way round( i.e jpeg to bitmap), i get a jpeg with bitmap extension.


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WarheaDAuthor Commented:
I'm back (a week later)

I have included the jpeg.dcu into my uses, but i still get a bitmap with jpeg extension.
When I do it the other way round( i.e jpeg to bitmap), i get a jpeg with bitmap extension.


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intheCommented:
first your question was :
How do i save a bitmap as a jpeg, using a TImage.well that question is answered,what you want to do is convert a jpg to a bitmap which is different,below is a link to efg's source for doing this.it is source for bmp to jpg(visa versa) for commandline ,but you should be able to see whats happening
Happy coding
Regards Barry

http://www.efg2.com/lab/library/delphi/graphics/BMPtoJPG.PAS.txt
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intheCommented:
also go here:
http://www.efg2.com/lab/Graphics/BMPJPG.htm

and download bmpjpg.zip,has full sources inside for doing conversions
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rwilson032697Commented:
Well, here is the missing bit I think...

You can make another TImage then just assign the graphic to the bitmap to convert the graphic to the bitmap (the graphic property will contain the JPEG image you loaded into it). Like this:

  image2.picture.bitmap.assign(Image1.picture.graphic);

However, if you want to go both ways this is perhaps not a suitable solution...

Cheers,

Raymond.
 
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bruintjeCommented:
Hi All,
Interesting, browsing through these back end questions, I'm currently working on a Word doc to JPEG converter, and I see some input here, I had already all the pieces working only with quite some overhead.

:O)Always happY.
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WarheaDAuthor Commented:
Hey inthe

The conversion doesn't work either way, but thanks for the links. I'll give you the points anyway, because everyone here says it should work too. So just answer again so i can give them to you.
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intheCommented:
hi there warhead
ok then i'll answer but what do you mean the conversion dosent work either way?
did you download bmpjpg.zip ?
it contains both sources and executables to convert from one to the other. jpgtobmp.exe and bmptojpg.exe
Regards Barry
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WarheaDAuthor Commented:
hi inthe

Although the answer wasn't correct, i've assigned the ponts to you.

Cheers

P.S BoRiS E-mailed me the correct answer!
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