SDK网络连接/多线程示例代码
2010年06月09日
static BOOL SendMsg(wstring url) { DWORD dwNetWorkStatus = QueryNetWorkStatus(); HINTERNET hSession = NULL,hConnection = NULL,hOpenRequest = NULL; //如果没有网络则连接网络 if (dwNetWorkStatus == NETWORK_NONE) { Dial_StartGprsConnect2(0,GPRS_FORCE_APP_TYPE); //联网后重新查询网络类型 dwNetWorkStatus = QueryNetWorkStatus(); } //判定是否为cmwap,使用代理 if (dwNetWorkStatus == NETWORK_EDGE_PROXY) hSession = InternetOpen(L"Meizu", INTERNET_OPEN_TYPE_PROXY, L"10.0.0.172:80", NULL, 0); else hSession = InternetOpen(L"Meizu", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0); string url_utf8 = MzConvert::UnicodeToUTF8(url);//编码 url = ::MzConvert::string2wstring(url_utf8); //打开链接,获取文件 HINTERNET hHttpFile = InternetOpenUrlW(hSession, url.c_str(), NULL, 0,INTERNET_FLAG_RELOAD, 0); //读取文件内容 char buf[1024]={0}; DWORD dwRead=0; BOOL ReadReturn=InternetReadFile(hHttpFile,(LPVOID)buf, 1024+1,&dwRead); wstring str = MzConvert::UTF8ToUnicode(string(buf));//解码 //关闭连接 InternetCloseHandle(hSession); return true; }这里面编码解码很重要的,不然中文乱码问题很头疼!
多线程:
声明:static DWORD WINAPI ThreadProc (LPVOID pArg);
static wstring SEND = L"http://quickfetion.appspot.com/sendmsg?username=?;password=?;sendto=?;message=?";
定义:static DWORD WINAPI ThreadProc (LPVOID pArg)
{
wstring *c = (wstring*)pArg;
wstring url = wstring(*c);
CQuickFxMainWnd::SendMsg(url);
return 1;
}
调用:HANDLE hThread = CreateThread(NULL, 0, ::ThreadProc,&SEND, 0, 0);
这里注意函数定义形式,static关键字,还有全局概念,否则出现线程阻塞,不可访问资源的错误!
个人理解,各位高手莫要见笑!!!
附上编码解码的头文件:
using namespace std; class MzConvert { public: static wstring string2wstring(const string& s) { int len; int slength = (int)s.length() + 1; len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0); wchar_t* buf = new wchar_t[len]; MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len); std::wstring r(buf); delete[] buf; return r; } static wstring ANSIToUnicode( const string& str ) { int len = str.length(); int unicodeLen = ::MultiByteToWideChar( CP_ACP, 0, str.c_str(), -1, NULL, 0 ); wchar_t * pUnicode; pUnicode = new wchar_t[unicodeLen+1]; memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t)); MultiByteToWideChar( CP_ACP, 0, str.c_str(), -1, (LPWSTR)pUnicode, unicodeLen ); wstring rt = ( wchar_t* )pUnicode; delete pUnicode; return rt; } static string UnicodeToANSI( const wstring& str ) { char* pElementText; int iTextLen; // wide char to multi char iTextLen = WideCharToMultiByte( CP_ACP, 0, str.c_str(), -1, NULL, 0, NULL, NULL ); pElementText = new char[iTextLen + 1]; memset( ( void* )pElementText, 0, sizeof( char ) * ( iTextLen + 1 ) ); WideCharToMultiByte( CP_ACP, 0, str.c_str(), -1, pElementText, iTextLen, NULL, NULL ); string strText = pElementText; delete[] pElementText; return strText; } static wstring UTF8ToUnicode( const string& str ) { int len = str.length(); int unicodeLen = ::MultiByteToWideChar( CP_UTF8, 0, str.c_str(), -1, NULL, 0 ); wchar_t * pUnicode; pUnicode = new wchar_t[unicodeLen+1]; memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t)); MultiByteToWideChar( CP_UTF8, 0, str.c_str(), -1, (LPWSTR)pUnicode, unicodeLen ); wstring rt = ( wchar_t* )pUnicode; delete pUnicode; return rt; } static string UnicodeToUTF8( const wstring& str ) { char* pElementText; int iTextLen; // wide char to multi char iTextLen = WideCharToMultiByte( CP_UTF8, 0, str.c_str(), -1, NULL, 0, NULL, NULL ); pElementText = new char[iTextLen + 1]; memset( ( void* )pElementText, 0, sizeof( char ) * ( iTextLen + 1 ) ); WideCharToMultiByte( CP_UTF8, 0, str.c_str(), -1, pElementText, iTextLen, NULL, NULL ); string strText = pElementText; delete[] pElementText; return strText; } };
[ 本帖最后由 zhaxg 于 2009-10-13 08:59 编辑 ]