Hi, everyone.
I want to make sure CancelIo-API does work for ReadFile or ReadFileEx, through a driver works as if it not existed.
MSDN says:
--
To cancel all pending asynchronous I/O operations, use either:
CancelIothis function only cancels operations issued by the calling thread for the specified file handle.
--
But First of all, I cannot make some situation "pending" asynchronous I/O with ReadFile or ReadFileEx... :ehh:
for example, I tried to call ReadFileEx 63 times with a-FileHandle and various reading-range,
and then, called CancelIo & WaitForMultipleObjectEx. but all reading-buffer would be filled.
I have already checked CancelIo with ReadDirectoryChangesW and LockFileEx, these works fine.

Would you tell me how to make a "pending asynchronous I/O" situation with diskfile-Reading?
thanks in advance(and sorry my poor english).