MCIWNDM_GETERROR

The MCIWNDM_GETERROR message retrieves the last MCI error encountered. You can send this message explicitly or by using the MCIWndGetError macro.

MCIWNDM_GETERROR 
wParam = (WPARAM) (UINT) len; 
lParam = (LPARAM) (LPVOID) lp; 
 

Parameters

len

Size, in bytes, of the error buffer.

lp

Address of an application-defined buffer used to return the error string.

Return Values

Returns the integer error value if successful.

Remarks

If lp is a valid pointer, a null-terminated string corresponding to the error is returned in its buffer. If the error string is longer than the buffer, MCIWnd truncates it.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in vfw.h.
  Unicode: Defined as Unicode and ANSI messages.

See Also

MCIWnd Window Class Overview, MCIWnd Messages, MCIWndGetError