The MCIWndGetStart macro retrieves the location of the beginning of the content of an MCI device or file. You can use this macro or explicitly send the MCIWNDM_GETSTART message.
LONG MCIWndGetStart(
hwnd
);
Returns the location in the current time format.
Typically, the return value is zero; but some devices use a nonzero starting location. Seeking to this location sets the device to the start of the media.
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_GETSTART