public static class XL

using System;
using System.Runtime.InteropServices;

namespace XLDownload
{
/// <summary>
/// API
/// </summary>
public static class XL
{
private const string DllName = "xldl.dll";

/// <summary>
/// 初始化迅雷下载引擎
/// </summary>
/// <returns>初始化是否成功</returns>
[DllImport(DllName, EntryPoint = "XL_Init")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool Init();

/// <summary>
/// 卸载迅雷下载引擎
/// </summary>
/// <returns>卸载是否成功</returns>
[DllImport(DllName, EntryPoint = "XL_UnInit")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool UnInit();

/// <summary>
/// 新建下载任务
/// </summary>
/// <param name="param">任务参数</param>
/// <returns>任务句柄，null表示失败</returns>
[DllImport(DllName, EntryPoint = "XL_CreateTask", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr CreateTask([In()]DownTaskParam param);

/// <summary>
/// 启动下载任务
/// </summary>
/// <param name="task">任务句柄</param>
/// <returns>是否成功启动任务</returns>
[DllImport(DllName, EntryPoint = "XL_StartTask", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool StartTask(IntPtr task);

/// <summary>
/// 停止下载任务
/// </summary>
/// <param name="task">任务句柄</param>
/// <returns>是否成功停止了任务</returns>
[DllImport(DllName, EntryPoint = "XL_StopTask", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool StopTask(IntPtr task);

/// <summary>
/// 设置全局下载速度
/// </summary>
/// <param name="nKBps">限制速度(KB)</param>
[DllImport(DllName, EntryPoint = "XL_SetSpeedLimit", CallingConvention = CallingConvention.Cdecl)]
public static extern void SetSpeedLimit(int nKBps);

/// <summary>
/// 设置全局上传速度
/// </summary>
/// <param name="nTcpKBps"></param>
/// <param name="nOtherKBps"></param>
/// <returns></returns>
[DllImport(DllName, EntryPoint = "XL_SetUploadSpeedLimit", CallingConvention = CallingConvention.Cdecl)]
public static extern void SetUploadSpeedLimit(int nTcpKBps, int nOtherKBps);

/// <summary>
/// 查询任务信息
/// </summary>
/// <param name="task">任务句柄</param>
/// <param name="taskInfo">任务信息</param>
/// <returns>查询是否成功</returns>
[DllImport(DllName, EntryPoint = "XL_QueryTaskInfoEx", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool QueryTaskInfoEx(IntPtr task, [Out()]TaskInfo taskInfo);

/// <summary>
/// 释放任务
/// </summary>
/// <param name="task">任务句柄</param>
/// <returns>是否移除成功</returns>
[DllImport(DllName, EntryPoint = "XL_DeleteTask", CallingConvention = CallingConvention.Cdecl)]
public static extern bool DeleteTask(IntPtr task);

/// <summary>
/// 删除任务数据文件
/// </summary>
/// <param name="param">仅需要填充SavePath和FileName两个字段</param>
/// <returns></returns>
[DllImport(DllName, EntryPoint = "XL_DelTempFile", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool DelTempFile([In()]DownTaskParam param);

/// <summary>
/// 下载任务参数结构
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode, Pack = 1)]
public class DownTaskParam
{
public int Reserved0;

/// <summary>
/// 下载地址
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 2084)]
public string TaskUrl;

/// <summary>
/// 引用页
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 2084)]
public string RefUrl;

/// <summary>
/// 浏览器Cookie
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 4096)]
public string Cookies;

/// <summary>
/// 本地保存文件名
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string FileName;

[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string Reserved1;

/// <summary>
/// 文件保存目录
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string SavePath;

public IntPtr Reserved2;

public int Reserved3 = 0;

[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
public string Reserved4;

[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
public string Reserved5;

/// <summary>
/// 是否只从原始地址下载
/// </summary>
public bool IsOnlyOriginal = true;

public uint Reserved6 = 5;

/// <summary>
/// 禁止智能命名
/// </summary>
public bool DisableAutoRename = false;

/// <summary>
/// 是否用续传
/// </summary>
public bool IsResume = true;

[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2048, ArraySubType = UnmanagedType.U4)]
public uint[] Reserved7;
}

/// <summary>
/// 任务状态码
/// </summary>
public enum TaskStatus
{
Noitem = 0,

/// <summary>
/// 下载出错
/// </summary>
Error,

/// <summary>
/// 下载已暂停
/// </summary>
Pause,

/// <summary>
/// 下载中
/// </summary>
Download,

/// <summary>
/// 下载成功
/// </summary>
Complete,

/// <summary>
/// 任务启动中
/// </summary>
Startpending,

/// <summary>
/// 任务停止中
/// </summary>
Stoppending
}

/// <summary>
/// 错误码
/// </summary>
public enum ErrorCode
{
Unknown = 0,
DiskCreate = 1,
DiskWrite = 2,
DiskRead = 3,
DiskRename = 4,
DiskPiecehash = 5,
DiskFilehash = 6,
DiskDelete = 7,
DownInvalid = 16,
ProxyAuthTypeUnkown = 32,
ProxyAuthTypeFailed = 33,
HttpmgrNotIp = 48,
Timeout = 64,
Cancel = 65,
TpCrashed = 66,
IdInvalid = 67
}

/// <summary>
/// 任务信息
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public class TaskInfo
{
public TaskStatus State;
public ErrorCode FailCode;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string FileName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string Reserved0;
public long TotalSize;
public long TotalDownload;
public float Percent;
public int Reserved1;
public int SrcTotal;
public int SrcUsing;
public int Reserved2;
public int Reserved3;
public int Reserved4;
public int Reserved5;
public long Reserved6;
public long DonationP2P;
public long Reserved7;
public long DonationOrgin;
public long DonationP2S;
public long Reserved8;
public long Reserved9;
public int Speed;
public int SpeedP2S;
public int SpeedP2P;
public bool IsOriginUsable;
public float HashPercent;
public int IsCreatingFile;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 64, ArraySubType = UnmanagedType.U4)]
public uint[] Reserved10;
}
}
}