This message is sent to an image IOProc to determine the currently selected
image index in the image file.
pmmioinfo (PMMIOINFO)
A
pointer to an MMIOINFO data structure.
usMsg (USHORT)
pulParam1 (PULONG)
Pointer
to a ULONG that will contain the current image index upon return. Image
indexes are zero-based.
lParam2 (LONG)
This
parameter is not used.
rc (ULONG)
Return
codes indicating success or failure.
MMIO_SUCCESS
The request was successful.
MMIO_ERROR
An error code is returned.
MMIOERR_UNSUPPORTED_FUNCTION
This command is not supported by this image IOProc,
so it should be interpreted as having the 0th index image selected.
[Back]
[Next]