/// <summary>
/// 初始化非托管委托指针(函数指针);
/// </summary>
private void InitializePtr()
{
//位置委托;
SetInt64Delegate setPos = OnSetPos;
GetInt64Delegate getPos = OnGetPos;
delegates.Add(setPos);
delegates.Add(getPos);
SetPositionFunc(
StreamPtr,
getPos,
setPos
);
//长度委托;
GetInt64Delegate getLength = OnGetLength;
delegates.Add(getLength);
SetGetLengthFunc(StreamPtr, getLength);
//可读/写委托;
GetBoolDelegate canRead = OnCanRead;
GetBoolDelegate canWrite = OnCanWrite;
delegates.Add(canRead);
delegates.Add(canWrite);
SetCanReadFunc(StreamPtr, canRead);
SetCanWriteFunc(StreamPtr, canWrite);
//写入委托;
WriteDelegate write = OnWrite;
delegates.Add(write);
SetWriteFunc(StreamPtr, write);
//读取委托;
ReadDelegate read = OnRead;
delegates.Add(read);
SetReadFunc(StreamPtr, read);
}
private static extern void SetPositionFunc(IntPtr stream, [MarshalAs(UnmanagedType.FunctionPtr)] GetInt64Delegate getPositionFunc,
[MarshalAs(UnmanagedType.FunctionPtr)] SetInt64Delegate setPositionFunc);
private static extern void SetGetLengthFunc(IntPtr stream, [MarshalAs(UnmanagedType.FunctionPtr)] GetInt64Delegate getLengthFunc);