KB129954 - DOCERR: ICM_DECOMPRESSEX_QUERY dwParam1 and dwParam2 Incorrect

SUMMARY

The online help (DK_DOC.HLP or DK_DOC.MVB) in the Microsoft Video for Windows DK incorrectly documents the ICM_DECOMPRESSEX_QUERY message. The incorrect documentation states the following:

dwParam1 - Specifies a far pointer to an ICDECOMPRESSEX data structure describing the input format.

dwParam2 - Specifies zero or a far pointer to an ICDECOMPRESSEX data structure used to return the output format. Zero indicates that any output format is acceptable.

The correct documentation for this message is listed below:

dwParam1 - Specifies zero or a far pointer to an ICDECOMPRESSEX data structure used to return the output format. Zero indicates that any output format is acceptable.

dwParam2 - Contains the size in bytes of the structure pointed to by dwParam1.

The ICSAMPLE sample code from the Microsoft Video for Windows DK correctly handles the ICM_DECOMPRESSEX_QUERY message.

NOTE: The similarly named ICM_DECOMPRESS_QUERY message is documented correctly.