Detecting Gdiplus I/O errors

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C++

How can I detect whether the Bitmap::Save method fails because of an I/O error? The method returns void and neither of the two exceptions it raises (ArgumentNullException and ExternalException) seem to cover an I/O failure because of, say, trying to write to a read-only CD/DVD or not enough space on a disc for the saved file. Thanks for any help.

Hugh McIntyre.