Any 3RD Party sources to save Bitmaps to graphic files?

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Peter Anthony - 14 Nov 2007 16:53 GMT

I would like to be able to save a Bitmap to a graphic file, such as a JPG,
BMP, etc. Are there any 3rd party sources that provide a means to put this
functionality into my VS C++ 2008 application in /CLI mamaged mode? I'd
prefer not to write the conversions.

Also, is there a place I can find the BMP and JPG file format standards?

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Mark Salsbery [MVP] - 14 Nov 2007 19:48 GMT

>I would like to be able to save a Bitmap to a graphic file, such as a JPG,
>BMP, etc. Are there any 3rd party sources that provide a means to put this
>functionality into my VS C++ 2008 application in /CLI mamaged mode? I'd
>prefer not to write the conversions.

There's lots of 3rd party libraries available.

Built in to Windows, there's GDI+.
http://msdn2.microsoft.com/en-us/library/ms533798.aspx

The .NET System.Drawing namespace has classes which wrap the GDI+ classes.
http://msdn2.microsoft.com/en-us/library/system.drawing.aspx

> Also, is there a place I can find the BMP and JPG file format standards?

For JPEG, Google "JPEG file format" and/or "JPEG JFIF"

A typical (packed) BMP file is a BITMAPFILEHEADER struct followed by a
BITMAPINFO struct followed by the color table (if appropriate) followed by
the pixel data. http://msdn2.microsoft.com/en-us/library/ms532311.aspx

Mark

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Mark Salsbery
Microsoft MVP - Visual C++

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Peter Anthony - 14 Nov 2007 20:31 GMT

Thanx Mark!

I also discovered that Wikipedia also details image file formats! Pretty
cool! :)

>>I would like to be able to save a Bitmap to a graphic file, such as a JPG,
>>BMP, etc. Are there any 3rd party sources that provide a means to put this
[quoted text clipped - 18 lines]
>
> Mark

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Norman Diamond - 15 Nov 2007 01:03 GMT

If you're willing to call out to unmanaged code, here are two ways.

CxImage
http://www.xdp.it/download.htm
http://www.codeproject.com/bitmap/cximage.asp

CImage
http://msdn2.microsoft.com/en-us/library/bwea7by5(VS.80).aspx

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Any 3RD Party sources to save Bitmaps to graphic files?

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