大家好~
想麻煩一下大家~
在版上看到一篇文章~
http://delphi.ktop.com.tw/board.php?cid=168&fid=917&tid=84034

BOOL WriteFile(

HANDLE hFile, // handle to file to write to
LPCVOID lpBuffer, // pointer to data to write to file
DWORD nNumberOfBytesToWrite, // number of bytes to write
LPDWORD lpNumberOfBytesWritten, // pointer to number of bytes written
LPOVERLAPPED lpOverlapped // pointer to structure needed for overlapped I/O
);

如果成功傳送writefile 會回覆一個非0值...

可是我執行時~writefile 回覆了一個非0值...
應該就表示我成功傳送了~

可是 LPDWORD lpNumberOfBytesWritten, // pointer to number of bytes written 的值卻又是等於0~
說明我傳送了0 byte

這樣倒底是有沒有成功呢??
謝謝~

在MSDN上找到的資訊：

lpNumberOfBytesWritten

A pointer to the variable that receives the number of bytes written. WriteFile sets this value to zero before doing any work or error checking.