The MCIWndGetAlias macro retrieves the alias used to open an MCI device or file with the mciSendString function. You can use this macro or explicitly send the MCIWNDM_GETALIAS message.
UINT MCIWndGetAlias(
hwnd
);
Returns the device alias.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in vfw.h.
MCIWnd Window Class Overview, MCIWnd Macros, mciSendString, MCIWNDM_GETALIAS