MCI_CUE

This MCI command message prepares a device instance so that it can begin playing or recording with minimum delay.

Parameters DWORD lParam1 The following flags apply to all devices supporting MCI_CUE:

MCI_NOTIFY	Specifies that MCI should post the MM_MCINOTIFY message when this command completes. The window that receives this message is specified in the dwCallback field of the data structure identified by lParam2.
MCI_TEST	Queries the device to determine if it can execute the command. The device returns an error if it is incapable of executing the command. It returns no error if it can handle the command. MCI returns control to the application without executing the command.
MCI_WAIT	Specifies that the cue operation should finish before MCI returns control to the application.
LPMCI_GENERIC_PARMS lParam2	Specifies a far pointer to the MCI_GENERIC_PARMS data structure. (Digital-video devices can use this data structure rather than their device-specific data structure if the extended data fields are not being used.)