The MM_MIM_LONGERROR message is sent to a window when an invalid or incomplete MIDI system-exclusive message is received.
MM_MIM_LONGERROR wParam = (WPARAM) hInput lParam = (LPARAM) lpMidiHdr
Handle to the MIDI input device that received the invalid message.
Pointer to a MIDIHDR structure identifying the buffer containing the invalid message.
This message does not return a value.
The returned buffer might not be full. To determine the number of bytes recorded into the returned buffer, use the dwBytesRecorded member of the MIDIHDR structure specified by lpMidiHdr. **
** 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 Mmsystem.h; include Windows.h.