size_t test_save(void *ptr, size_t size, size_t nmemb, void *stream) { size_t sizes = size * nmemb; DWORD dwHasWritten; WriteFile((HANDLE)stream,ptr,sizes,&dwHasWritten,NULL); return sizes; } int test_get(const char *url, HANDLE hFile) { CURL *pCurl = curl_easy_init(); int responseCode = -1; CURLcode returnCode = CURLE_OK; do { if (!pCurl) { break; } returnCode = curl_easy_setopt(pCurl, CURLOPT_CONNECTTIMEOUT, 10); //设置连接超时时间 CURL_BREAK_IF_NOT_OK(returnCode); returnCode = curl_easy_setopt(pCurl, CURLOPT_URL, url); //设置请求链接 CURL_BREAK_IF_NOT_OK(returnCode); returnCode = curl_easy_setopt(pCurl, CURLOPT_WRITEDATA, hFile); //设置CURLOPT_WRITEFUNCTION的最后一个参数值 CURL_BREAK_IF_NOT_OK(returnCode); returnCode = curl_easy_setopt(pCurl, CURLOPT_WRITEFUNCTION, test_save); //设置接收到数据之后的回调函数 CURL_BREAK_IF_NOT_OK(returnCode); returnCode = curl_easy_perform(pCurl); //开始传输 CURL_BREAK_IF_NOT_OK(returnCode); returnCode = curl_easy_getinfo(pCurl, CURLINFO_RESPONSE_CODE, &responseCode); //获取返回信息 } while (0); if (pCurl) { curl_easy_cleanup(pCurl); } return responseCode; } HANDLE hFile = CreateFileW(L"d:\22.exe", GENERIC_WRITE, FILE_SHARE_WRITE | FILE_SHARE_READ/*|FILE_SHARE_DELETE*/, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); if (INVALID_HANDLE_VALUE != hFile) { test_get("http://dldir1.qq.com/qqfile/qq/QQ8.4/18380/QQ8.4.exe", hFile); } CloseHandle(hFile); hFile = NULL;