mciSendCommand 函数的功能和用法

来源：互联网发布：陕西软件协会编辑：程序博客网时间：2024/04/27 14:05

mciSendCommand Function

The mciSendCommand function sends a command message to the specified MCI device.

函数原型：

MCIERROR mciSendCommand(
    MCIDEVICEID IDDevice,
    UINT uMsg,
    DWORD fdwCommand,
    DWORD_PTR dwParam
);

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 a list, see Multimedia Commands.

fdwCommand

Flags for the command message.

dwParam

Pointer to a structure that contains parameters for the command message.

Return Value

Returns zero if successful or an error otherwise. The low-order word of the returned DWORD 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 MCIERR Return Values.

To retrieve a text description of return values, pass the return value to the mciGetErrorString function.