????? ????????? ?? ??????? ?????? ??? Internet Explorer ?????? ???????

HINTERNET hInternet = InternetOpen(szAppName, INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
InternetSetOption(hInternet, INTERNET_OPTION_PER_CONNECTION_OPTION, ...); 
InternetCloseHandle (hInternet);

unsigned long        nSize = 4096;
char                 szBuf[4096] = { 0 };
INTERNET_PROXY_INFO* pInfo = (INTERNET_PROXY_INFO*)szBuf;

if(!InternetQueryOption(NULL, INTERNET_OPTION_PROXY, pInfo, &nSize))
   printf("InternetQueryOption failed! (%d)\n", GetLastError());
				

INTERNET_PER_CONN_OPTION_LIST    List;
INTERNET_PER_CONN_OPTION         Option[5];
unsigned long                    nSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);

Option[0].dwOption = INTERNET_PER_CONN_AUTOCONFIG_URL;
Option[1].dwOption = INTERNET_PER_CONN_AUTODISCOVERY_FLAGS;
Option[2].dwOption = INTERNET_PER_CONN_FLAGS;
Option[3].dwOption = INTERNET_PER_CONN_PROXY_BYPASS;
Option[4].dwOption = INTERNET_PER_CONN_PROXY_SERVER;

List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);
List.pszConnection = NULL;
List.dwOptionCount = 5;
List.dwOptionError = 0;
List.pOptions = Option;

if(!InternetQueryOption(NULL, INTERNET_OPTION_PER_CONNECTION_OPTION, &List, &nSize))
   printf("InternetQueryOption failed! (%d)\n", GetLastError());
   if(Option[0].Value.pszValue != NULL)
   printf("%s\n", Option[0].Value.pszValue);

if((Option[2].Value.dwValue & PROXY_TYPE_AUTO_PROXY_URL) == PROXY_TYPE_AUTO_PROXY_URL)
  printf("PROXY_TYPE_AUTO_PROXY_URL\n");

if((Option[2].Value.dwValue & PROXY_TYPE_AUTO_DETECT) == PROXY_TYPE_AUTO_DETECT)
   printf("PROXY_TYPE_AUTO_DETECT\n");

INTERNET_VERSION_INFO      Version;
nSize = sizeof(INTERNET_VERSION_INFO);

InternetQueryOption(NULL, INTERNET_OPTION_VERSION, &Version, &nSize);

if(Option[0].Value.pszValue != NULL)
   GlobalFree(Option[0].Value.pszValue);

if(Option[3].Value.pszValue != NULL)
   GlobalFree(Option[3].Value.pszValue);

if(Option[4].Value.pszValue != NULL)
   GlobalFree(Option[4].Value.pszValue);
				

INTERNET_PER_CONN_OPTION_LIST    List;
INTERNET_PER_CONN_OPTION         Option[1];
unsigned long                    nSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);

Option[0].dwOption = INTERNET_PER_CONN_PROXY_SERVER;
Option[0].Value.pszValue = "http://myproxy:8080";

List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);
List.pszConnection = NULL;
List.dwOptionCount = 1;
List.dwOptionError = 0;
List.pOptions = Option;

if(!InternetSetOption(NULL, INTERNET_OPTION_PER_CONNECTION_OPTION, &List, nSize))
   printf("InternetQueryOption failed! (%d)\n", GetLastError());

				

INTERNET_PER_CONN_OPTION_LIST    List;
INTERNET_PER_CONN_OPTION         Option[2];
unsigned long                    nSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);

Option[0].dwOption = INTERNET_PER_CONN_AUTOCONFIG_URL;
Option[0].Value.pszValue = "http://myserver/get_proxy_info.dll";
Option[1].dwOption = INTERNET_PER_CONN_FLAGS;
Option[1].Value.dwValue = PROXY_TYPE_AUTO_PROXY_URL;

List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);
List.pszConnection = NULL;
List.dwOptionCount = 2;
List.dwOptionError = 0;
List.pOptions = Option;

if(!InternetSetOption(NULL, INTERNET_OPTION_PER_CONNECTION_OPTION, &List, nSize))
   printf("InternetQueryOption failed! (%d)\n", GetLastError());
				

int main(int argc, char * argv[]) 
{ 
char buff[256] = "http=http://<ProxyServerName>:80"; 
// To include server for FTP, HTTPS, and so on, use the string
// (ftp=http://<ProxyServerName>:80; https=https://<ProxyServerName>:80) 
INTERNET_PER_CONN_OPTION_LIST    List; 
INTERNET_PER_CONN_OPTION         Option[3]; 
unsigned long                    nSize = sizeof(INTERNET_PER_CONN_OPTION_LIST); 

Option[0].dwOption = INTERNET_PER_CONN_PROXY_SERVER; 
Option[0].Value.pszValue = buff; 

Option[1].dwOption = INTERNET_PER_CONN_FLAGS; 
Option[1].Value.dwValue = PROXY_TYPE_PROXY; 
Option[1].Value.dwValue |= PROXY_TYPE_DIRECT; 
// This option sets all the possible connection types for the client. 
// This case specifies that the proxy can be used or direct connection is possible.

Option[2].dwOption = INTERNET_PER_CONN_PROXY_BYPASS; 
Option[2].Value.pszValue = "<local>"; 

 

List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST); 
List.pszConnection = NULL; 
List.dwOptionCount = 3; 
List.dwOptionError = 0; 
List.pOptions = Option; 

if(!InternetSetOption(NULL, INTERNET_OPTION_PER_CONNECTION_OPTION, &List, nSize)) 
printf("InternetSetOption failed! (%d)\n", GetLastError()); 

InternetSetOption(NULL, INTERNET_OPTION_REFRESH, NULL,NULL); 
//The connection settings for other instances of Internet Explorer. 

return 0; 

}