The MCIWndUseTime macro sets the time format of an MCI device to milliseconds. You can use this macro or explicitly send the MCIWNDM_SETTIMEFORMAT message.
LONG MCIWndUseTime(
hwnd
);
Returns zero if successful or an error otherwise.
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, MCIWNDM_SETTIMEFORMAT