請問各位大大:

當我使用WriteFile將資料送出去時 , 如何得知資料已經全部送出 ??

謝謝

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
);

Return Values

If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero.

writefile 成功會回覆一個非0值給你。這樣就知道資料有沒有送出去