(*
enum enumTaskStatus{
    enumTaskStatus_Connect = 0,                 // 已经建立连接
    enumTaskStatus_Download = 2,                // 开始下载 
    enumTaskStatus_Pause = 10,                  // 暂停
    enumTaskStatus_Success = 11,                // 成功下载
    enumTaskStatus_Fail = 12,                   // 下载失败
};
*)
  enumTaskStatus = (
    enumTaskStatus_Connect = 0,                 // 已经建立连接
    enumTaskStatus_Download = 2,                // 开始下载
    enumTaskStatus_Pause = 10,                  // 暂停
    enumTaskStatus_Success = 11,                // 成功下载
    enumTaskStatus_Fail = 12);

//BOOL  __stdcall XLInitDownloadEngine();
function XLInitDownloadEngine: BOOL;stdcall;external 'XLDownload.dll';
//DWORD __stdcall XLURLDownloadToFile(LPCTSTR pszFileName, LPCTSTR pszUrl, LPCTSTR pszRefUrl, LONG & lTaskId);
function XLURLDownloadToFile(pszFileName,pszUrl,pszRefurl: PChar;var iTaskId: LongInt): DWORD;stdcall;external 'XLDownload.dll';
//DWORD __stdcall XLQueryTaskInfo(LONG lTaskId, LONG *plStatus, ULONGLONG *pullFileSize, ULONGLONG *pullRecvSize);
function XLQueryTaskInfo(lTaskId: LongInt;plStatus: PInteger;pullFileSize: PDWORD; pullRecvSize: PDWORD): DWORD;stdcall;external 'XLDownload.dll';
//DWORD __stdcall XLPauseTask(LONG lTaskId, LONG & lNewTaskId);
function XLPauseTask(lTaskID: LongInt;var lNewTaskID: LongInt): DWORD;stdcall;external 'XLDownload.dll';
//DWORD __stdcall XLContinueTask(LONG lTaskId);
function XLContinueTask(lTaskId: LongInt): DWORD;stdcall;external 'XLDownload.dll';
//DWORD __stdcall XLContinueTaskFromTdFile(LPCTSTR pszTdFileFullPath, LONG & lTaskId);
function XLContinueTaskFromTdFile(pszTdFileFullPath: PChar;var lTaskId: Longint): DWORD;stdcall;external 'XLDownload.dll';
//VOID  __stdcall XLStopTask(LONG lTaskId);
procedure XLStopTask(lTaskId: longint);stdcall;external 'XLDownload.dll';
//BOOL  __stdcall XLUninitDownloadEngine();
function XLUninitDownloadEngine: BOOL;stdcall;external 'XLDownload.dll';
//DWORD __stdcall XLGetErrorMsg(DWORD dwErrorId, LPTSTR pszBuffer, DWORD & dwSize);
function XLGetErrorMsg(dwErrorId: DWORD;pszBuffer: PChar;var dwsize: DWORD): DWORD;stdcall;external 'XLDownload.dll';