MCI_MIXNOTIFY Parameter - ulParam1
ulParam1 (ULONG)
The
following flags can be used with an amplifier-mixer device.
MCI_NOTIFY
A notification message is posted to
the window specified in the hwndCallback parameter of the data structure
identified by pParam2 when the action indicated by this message is
completed.
MCI_WAIT
Control
is not returned until the action indicated by this message is completed.
MCI_MIXNOTIFY_ON
Turns
mix notifications on. A valid window handle must be specified in the hwndCallback
field of MCI_GENERIC_PARMS.
If an invalid handle is specified, MCIERR_INVALID_CALLBACK_HANDLE will be
returned.
MCI_MIXNOTIFY_OFF
Turns
mix notifications off.
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