pmmformatinfo (PMMFORMATINFO)
- in/out
A pointer to an MMFORMATINFO
structure that might have optionally set the fccIOProc field
(FOURCC code) or ulMediaType field (multimedia data type). These
two fields provide the search criteria for matching an MMFORMATINFO
structure. If both of these fields are NULL, then all I/O procedure
MMFORMATINFO structures are returned,
provided enough space is allocated for in the buffer pointed to by the pFormatInfoList
parameter.
lNumFormats (LONG) - input
The maximum number of MMFORMATINFO
structures that can be returned in the pFormatInfoList parameter
buffer.
pFormatInfoList (PVOID)
- in/out
Pointer to a buffer that will be filled
with a list of matched MMFORMATINFO
structures. The application needs to allocate enough memory to hold
the requested number of structures.
plFormatsRead (PLONG) -
output
Pointer to a LONG data type. Returns the
number of formats that were returned in the pFormatInfoList parameter
buffer.
ulReserved (ULONG) - input
Reserved for future use and must be set to zero.
ulFlags (ULONG) - input
Reserved for future use and must be set to zero.
rc (ULONG) - returns
Return
codes indicating success or type of failure:
MMIO_SUCCESS
If the function succeeds, 0 is returned.
MMIO_ERROR
The function
failed for a reason different from any of the following returns in this
list.
MMIOERR_INVALID_PARAMETER
An
invalid parameter was passed.
MMIOERR_INTERNAL_SYSTEM
An internal system error occurred.
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