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Date Posted: 06:41:05 02/18/03 Tue
Author: Michel
Subject: Re: GetDIB Failed on XP but i believe not the way that has been discusssed!
In reply to: Al Christoph 's message, "GetDIB Failed on XP but i believe not the way that has been discusssed!" on 13:25:52 02/16/03 Sun


Hi Al,

About the RLE compression, I don't think this would be it, because once a bitmap is read from disk it is decompressed.

The only thing I can see for know is that Windows was unable to allocate the handle for the DIB. Are you able to consistently reproduce the problem with a specifc file. Please email me the file, I will have a look at it.

Best regards,

Michel


>I Get a GetDIB error which i believe is unrelated to
>any of the previous postings. I'm using the source
>code that includes the comment dated Apr 03, 2002
>which discuss the use of GlobalAlloc rather than
>getmem.
>
>This happens only on certain bitmaps - as in my
>previous postings from sources which I do not control.
>So ..... I put a call to Win32Check in immediately
>after the GetDiBits code. Here is the response.
>
>System Error. Code: 6.
>The handle is invalid
>
>Further checking suggests that the results returned by
>GetBitMapHeader are reasonable. The picture is
>displayed by Outlook Express, the XP viewer, and MS
>Paint. The source of the pic is an e-mail. The
>interesting thing is that OE saves the pic as about
>200 KB while MS Paint when it edited the 200KB image
>increased the file size to 300+ KB. Is there a clue
>here? Is it perhaps a RLE Compressed Bitmap? Further,
>the working 300 kb file does not even exercise the
>code which causes grief to the 200 KB file.
>
>I could trace things out in detail, but any
>suggestions from those who know things better than i
>would be helpful.
>
>Regards,
>Al

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Replies:

  • Re: GetDIB Failed on XP but i believe not the way that has been discusssed! -- Michel, 09:46:43 03/05/03 Wed
  • Re: GetDIB Failed on XP but i believe not the way that has been discusssed! -- Al Christoph, 17:22:41 03/09/03 Sun
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