LPOVERLAPPED_COMPLETION_ROUTINE Function Pointer
Points to a function that notifies the host when an overlapped (that is, asynchronous) I/O to a device has completed.
typedef VOID (*LPOVERLAPPED_COMPLETION_ROUTINE) (
[in] DWORD dwErrorCode,
[in] DWORD dwNumberOfBytesTransfered,
[in] LPVOID lpOverlapped
);
Parameters
dwErrorCode
[in] A value that is an error code if the device has been closed; otherwise, this value is zero.Closing a device causes all pending I/O to the device to be completed immediately.
dwNumberOfBytesTransfered
[in] The number of bytes transferred by the I/O operation.lpOverlapped
[in] A pointer to a structure that contains information to be used to complete the I/O request.
Remarks
The function to which LPOVERLAPPED_COMPLETION_ROUTINE points is a callback function and must be implemented by the writer of the hosting application. The callback function allows the host to process the completed I/O request.
Requirements
Platforms: Windows 2000, Windows XP, Windows Server 2003 family
Header: MSCorEE.idl
Library: MSCorWks.dll
.NET Framework Version: 2.0, 1.1, 1.0