花了2天时间做的一个软件，希望大家喜欢~~，Visual C++ 6.0编写，主要用到了多线程编程和网络编程中的几个RAS API函数
需要包含的头文件：
#include <ras.h>
#pragma comment(lib, "Rasapi32.lib")
主要的源代码如下：
void CRRDlg::RAS_Close() //关闭当前使用中的拨号连接
{
m_bClosing = true;
SetDlgItemText(IDC_CONNECT_STATE, "正在关闭当前的网络连接，请稍候...");
RASCONN ras[20];
DWORD dwSize, dwNumber, dwCount;
ras[0].dwSize = sizeof(RASCONN);
dwSize = sizeof(ras);
if (::RasEnumConnections(ras, &dwSize, &dwNumber) == 0)
{
for (dwCount = 0; dwCount < dwNumber; dwCount++)
//依次关闭所有的连接
{
if (::RasHangUp(ras[dwCount].hrasconn) != 0)
//如果函数成功，则返回0
{
break;
}
}
}
SetDlgItemText(IDC_STATIC_IP, "");
// SetDlgItemText(IDC_STATIC2,"");
// SetDlgItemText(IDC_STATIC3,"");
// SetDlgItemText(IDC_STATIC4,"");
SetDlgItemText(IDC_CONNECT_STATE, "网络连接已经关闭!");
m_bConnected = false;
m_bClosing = false;
if (::IsWindowVisible(GetSafeHwnd()))
{
this->CheckNet();
}
}
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UINT CRRDlg::RAS_Connect()
{
m_bConnecting = true; //正在连接，不能关闭程序
SetDlgItemText(IDC_CONNECT_STATE, "正在连接拨号网络,请稍候...");
CString strEntryName;
m_list.GetText(m_list.GetCurSel(), strEntryName);
char szUserName[MAX_PATH], szPassword[MAX_PATH];
GetDlgItemText(IDC_EDIT_USERNAME, szUserName, MAX_PATH);
GetDlgItemText(IDC_EDIT_PASSWORD, szPassword, MAX_PATH);
HRASCONN hRasConn = NULL;
RASDIALPARAMS rdParams; //拨号连接的信息
ZeroMemory(&rdParams, sizeof(RASDIALPARAMS));
rdParams.dwSize = sizeof(RASDIALPARAMS);
lstrcpy(rdParams.szEntryName, strEntryName);
lstrcpy(rdParams.szUserName, szUserName);
lstrcpy(rdParams.szPassword, szPassword);
DWORD dwRet;
dwRet = ::RasDial(NULL, NULL, &rdParams, 0L, NULL, &hRasConn);
if (dwRet) //如果函数成功，则返回0
{
char szBuf[256] = "";
::RasGetErrorString((UINT)dwRet, (LPSTR)szBuf, 256);
SetDlgItemText(IDC_CONNECT_STATE, CString("连接错误! ") + CString(szBuf)
);
AfxBeginThread(sndError, this);
m_bConnecting = false;
WinExec("rasphone -a", SW_SHOW);
return 0;
}
/*----------------------------------------------------------------------*/
RASPPPIP raspppip; //获取拨号连接的IP地址
raspppip.dwSize = sizeof(RASPPPIP);
DWORD cb = sizeof(RASPPPIP);
::RasGetProjectionInfo(hRasConn, RASP_PppIp, &raspppip, &cb);
m_strIP = (CString)raspppip.szIpAddress;
SetDlgItemText(IDC_STATIC_IP, m_strIP);
/*----------------------------------------------------------------------*/
SetDlgItemText(IDC_CONNECT_STATE, "已经成功地建立了连接");
m_bConnected = true;
m_bConnecting = false;
if (::IsWindowVisible(GetSafeHwnd()))
this->CheckNet();
return 1;
}
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