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mciSendCommand
The mciSendCommand function sends a command message to the specified MCI device.
MCIERROR mciSendCommand(
MCIDEVICEID IDDevice,
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| UINT uMsg,
|
| DWORD fdwCommand,
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| DWORD dwParam
|
| );
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|
Parameters
IDDevice
Device identifier of the MCI device that is to receive the command message.
This parameter is not used with the MCI_OPEN command message.
uMsg
Command message. For information about command messages, see Command Messages.
fdwCommand
Flags for the command message.
dwParam
Address of a structure that contains parameters for the command message.
Return Values
Returns zero if successful or an error otherwise. The low-order word of the
returned doubleword value contains the error return value. If the error is
device-specific, the high-order word of the return value is the driver identifier;
otherwise, the high-order word is zero. For a list of possible return values, see Constants: MCIERR Return Values.
To retrieve a text description of mciSendCommand return values, pass the return value to the mciGetErrorString function.
Remarks
Error values that are returned when a device is being opened are listed with
the MCI_OPEN command message. In addition to the MCI_OPEN error return values, this function can return the values listed in Constants: MCIERR Return Values.
Use MCI_OPEN to obtain the device identifier specified by the IDDevice parameter.
See Also
MCI_OPEN, mciGetErrorString
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