The MCIWNDM_GETSPEED message retrieves the playback speed of an MCI device. You can send this message explicitly or by using the MCIWndGetSpeed macro.
MCIWNDM_GETSPEED
wParam = 0;
lParam = 0;
Returns the playback speed if successful. The value for normal speed is 1000. Larger values indicate faster speeds, smaller values indicate slower speeds.
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 Messages, MCIWndGetSpeed