net_state_check.rar_net_state_check_net_state_check vc6_vc6 网络状

#include <windows.h> #include<conio.h> #include <stdio.h> #include<iostream.h> #include <Wininet.h> void main() { BOOL m_bOnline;//是否在线 DWORD flags;//上网方式 m_bOnline=InternetGetConnectedState(&flags,0); if(m_bOnline)//在线 { int b; if ( flags& INTERNET_CONNECTION_MODEM ) { b = flags& INTERNET_CONNECTION_MODEM; } else if ( flags&INTERNET_CONNECTION_LAN ) { b = flags&INTERNET_CONNECTION_LAN; } else if ( flags& INTERNET_CONNECTION_PROXY ) { b = flags& INTERNET_CONNECTION_PROXY; } switch(b) { case INTERNET_CONNECTION_MODEM : cout<<"在线：拨号上网"<<endl; break; case INTERNET_CONNECTION_LAN : cout<<"在线：通过局域网"<<endl; break; case INTERNET_CONNECTION_PROXY : cout<<"在线：代理"<<endl; break; } if(flags&INTERNET_CONNECTION_MODEM_BUSY==INTERNET_CONNECTION_MODEM_BUSY) cout<<"MODEM被其他非INTERNET连接占用"<<endl; } else cout<<"不在线"<<endl; }