下载文件

void download(const char *Url,const char *save_as)/*将Url指向的地址的文件下载到save_as指向的本地文件*/
{
	byte Temp[MAXBLOCKSIZE];
	ULONG Number = 1;

	FILE *stream;
	HINTERNET hSession = InternetOpen("test", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
	if (hSession != NULL)
	{
		HINTERNET handle2 = InternetOpenUrl(hSession, Url, NULL, 0, INTERNET_FLAG_DONT_CACHE, 0);
		if (handle2 != NULL)
		{
			if( (stream = fopen( save_as, "wb" )) != NULL )
			{
				while (Number > 0)
				{
					InternetReadFile(handle2, Temp, MAXBLOCKSIZE - 1, &Number);

					fwrite(Temp, sizeof (char), Number , stream);
				}
				fclose( stream );

			}

			InternetCloseHandle(handle2);
			handle2 = NULL;
		}
		InternetCloseHandle(hSession);
		hSession = NULL;
	}
}