MCIWNDM_GETLENGTH
The MCIWNDM_GETLENGTH message retrieves the length of the content or file currently used by an MCI device. You can send this message explicitly or by using the MCIWndGetLength macro.
MCIWNDM_GETLENGTH
wParam = 0;
lParam = 0;
Return Values
Returns the length. The units for the length depend on the current time format.
Requirements
** Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
** Windows 95/98/Me:** Included in Windows 95 and later.
** Header:** Declared in Vfw.h.
See Also