Re: Using CImage?

I am trying to use CImage for the first time. I give the code
schematically below. CImage::Save() is not working for me.

Am I missing some important step? The HRESULT indicates an unknown
error.

(Stepping through image.Save(), I see it succeeding until the last step

 Gdiplus::Bitmap bm( m_hBitmap, NULL );
 status = bm.Save( pwszFileName, &clsidEncoder, NULL );

which fails.)

================
The code:
Schematically I have

HBITMAP hBitmap = ......;

// I then call a debugging routine which displays the bitmap
// in a dialogue: it looks ok.
// I now want to save it as a GIF

TCHAR szFilename[ ] = _T(".... .gif");

// This is a UNICODE string.
// It gives the full path to a non-existent file in
// and existing directory (which is not write protected).

CImage image;
image.Attach( hBitmap );
HRESULT hResult = image.Save( szFilename );
image.Detach();

==============

Any ideas?

Dave
--
David Webber
Author of 'Mozart the Music Processor'
http://www.mozart.co.uk
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