MCIWNDM_SENDSTRING message

The MCIWNDM_SENDSTRING message sends an MCI command in string form to the device associated with the MCIWnd window. You can send this message explicitly or by using the MCIWndSendString macro.

MCIWNDM_SENDSTRING 
wParam = 0; 
lParam = (LPARAM) (LPSTR) sz; 

Parameters

sz

String command to send to the MCI device.

Return Value

Returns zero if successful or an error otherwise.

Remarks

The message handler for MCIWNDM_SENDSTRING appends a device alias to the MCI command you send to the device. Therefore, you should not use any alias in an MCI command that you issue with MCIWNDM_SENDSTRING.

To get the return string, which contains the result of the command, send the MCIWNDM_RETURNSTRING message.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Vfw.h

See also

MCIWndSendString

Multimedia Command Strings