RAS功能需要引入#include <ras.h>
相关错误信息需要引入#include <Raserror.h>
功能1：枚举所有活动的连接并hangup指定的gprs
RASCONN entries[25];
//::memset(entries,0,sizeof(RASCONN));
DWORD bufsize=0;
DWORD numEntries=0;
bufsize=25*sizeof(RASCONN);
entries[0].dwSize=sizeof(RASCONN);//必须
RASCONNSTATUS status;//RAS状态在ras.h中可以查找到。
status.dwSize=sizeof(RASCONNSTATUS);
if(RasEnumConnections(entries,&bufsize,&numEntries)==0)//枚举所有活动的连接
{
for(DWORD i=0;i<numEntries;i++)
{
if(lstrcmp(entries[i].szEntryName,_T("GPRS"))==0 && RasHangUp(entries[i].hrasconn)==0)//挂断名称为gprs的连接
{
while(RasGetConnectStatus(entries[i].hrasconn,&status)==0)//得到连接的状态(能获取得到)
{
Sleep(0);
//Sleep(n)的作用是让当前线程睡眠n毫秒，以便执行其他线程，如果没有其他线程，那睡眠n毫秒后，继续执行。
//而如果n=0，Sleep(0)是指CPU交出当前线程的执行权，让CPU去执行其他线程。也就是放弃当前线程的时间片，转而执行其他线程。
}
}
}
}
功能2：枚举所有电话簿(获取本地的gprs名称),对应的注册表为HKEY_CURRENT_USER\Comm\RasBook下的值
RASENTRYNAME *lprasentryname;
DWORD cEntries;
DWORD cb;
lprasentryname=(LPRASENTRYNAME)LocalAlloc(LPTR,sizeof(RASENTRYNAME));
lprasentryname->dwSize=sizeof(RASENTRYNAME);
DWORD nRet;
//首次调用RasEnumEntries函数来获取缓冲区的大小
if((nRet=RasEnumEntries(NULL,NULL,lprasentryname,&cb,&cEntries))==0)
{
::LocalFree(lprasentryname);
lprasentryname=(LPRASENTRYNAME)GlobalAlloc(GPTR,cb);
lprasentryname->dwSize=sizeof(RASENTRYNAME);
}
//再次调用RasEnumEntries函数列举电话簿条目
nRet=RasEnumEntries(NULL,NULL,lprasentryname,&cb,&cEntries);
if(nRet !=ERROR_SUCCESS)
{
printf("aaaaaaaaa\n");
}
else
{
for(int i=0;i<cEntries;i++)
{
printf("%s\n",lprasentryname->szEntryName);
lprasentryname++;
}
}
GlobalFree(lprasentryname);
功能3：建立拔号连接
RASDIALPARAMS rdParams;
HRASCONN hRasConn=NULL;
//初始化参数
rdParams.dwSize=sizeof(RASDIALPARAMS);
lstrcpy(rdParams.szEntryName,_T("GPRS"));
lstrcpy(rdParams.szPhoneNumber,_T(""));
lstrcpy(rdParams.szCallbackNumber,_T(""));
lstrcpy(rdParams.szPhoneNumber,_T(""));
lstrcpy(rdParams.szUserName,_T(""));
lstrcpy(rdParams.szPassword,_T(""));
lstrcpy(rdParams.szDomain,_T(""));
DWORD dwRet;
// WINCE下GPRS 只支持以下两种拔号方式
//同步建立拔号连接
//dwRet=RasDial(NULL,NULL,&rdParams,NULL,NULL,&hRasConn);//同步
//异步
dwRet=RasDial(NULL,NULL,&rdParams,0xFFFFFFFF,窗体句柄,&hRasConn);//通过给窗体发送WM_RASDIALEVENT消息。 (RASCONNSTATE) wParam; dwError = (DWORD) lParam; // error that may have occurred
if(dwRet !=0)//拔号失败
{
}
功能4：删除gprs本地连接
RasDeleteEntry(NULL,_T("GPRS")); //第一个参数为NULL(NULL uses the current default phone-book file)
功能5：创建gprs本地连接
DWORD CreateGPRS(const LPWSTR pszEntryName,const LPCTSTR pszUserName,const LPCTSTR pszPassWord)
{
RASENTRY rasEntry;
RASDIALPARAMS rdParams;
DWORD rasEntrySize,dwResult;
/*验证RASENTRY名称是否有效*/
dwResult = RasValidateEntryName(NULL, pszEntryName);
if(dwResult!=ERROR_SUCCESS)
{
if(dwResult==ERROR_ALREADY_EXISTS)
{
return -1;
}
else
{
return -2;
}
}
memset(&rasEntry,0,sizeof(rasEntry));
rasEntrySize=sizeof(rasEntry);
rasEntry.dwSize=rasEntrySize;
DEVMINICFG tmpsDevConfig;
DWORD tmpsDevConfigLength=sizeof(DEVMINICFG);
if(RasGetEntryProperties(NULL,_T(""),&rasEntry,&rasEntrySize,(LPBYTE)&tmpsDevConfig,&tmpsDevConfigLength) !=0)
{
return -2;
}
lstrcpy(rasEntry.szDeviceType,RASDT_Modem);
lstrcpy(rasEntry.szDeviceName, TEXT("COM1 上的 Hayes 兼容调制解调器:"));
lstrcpy(rasEntry.szAreaCode, TEXT("10"));
lstrcpy(rasEntry.szLocalPhoneNumber,_T("*99***1#"));
rasEntry.dwCountryCode=86;//国家代码
tmpsDevConfig.wVersion = 0x30 ;
tmpsDevConfig.dwBaudRate = 115200 ;
tmpsDevConfig.ByteSize = 8 ;
tmpsDevConfig.StopBits = 0;
tmpsDevConfig.Parity = 0 ;
tmpsDevConfig.dwModemOptions = MDM_BLIND_DIAL ;
lstrcpy( tmpsDevConfig.szDialModifier,_T("+CGDCONT=1,\"IP\",\"CMNET\"")) ;
if(RasSetEntryProperties(NULL,pszEntryName,&rasEntry, sizeof(rasEntry),(LPBYTE)(&tmpsDevConfig),tmpsDevConfigLength)!=0)
{
return -2;
}
ZeroMemory(&rdParams, sizeof(RASDIALPARAMS));
rdParams.dwSize = sizeof(RASDIALPARAMS);
/*设置拔号的用户名和密码*/
lstrcpy(rdParams.szEntryName, pszEntryName);
lstrcpy(rdParams.szUserName, pszUserName);
lstrcpy(rdParams.szPassword, pszPassWord);
if(RasSetEntryDialParams(NULL, &rdParams, FALSE)!=0)
{
return -2;
}
return 1;
}
DEVMINICFG为记录TAPI相关的配置信息，定义如下：
#ifndef _DEVMINICFG_H_
#define _DEVMINICFG_H_
#define DIAL_MODIFIER_LEN 256
#define MAX_CFG_BLOB 126
#define MAX_NAME_LENGTH 8
// Modem Options
#define MDM_COMPRESSION 0x00000001
#define MDM_ERROR_CONTROL 0x00000002
#define MDM_FORCED_EC 0x00000004
#define MDM_CELLULAR 0x00000008
#define MDM_FLOWCONTROL_HARD 0x00000010
#define MDM_FLOWCONTROL_SOFT 0x00000020
#define MDM_CCITT_OVERRIDE 0x00000040
#define MDM_SPEED_ADJUST 0x00000080
#define MDM_TONE_DIAL 0x00000100
#define MDM_BLIND_DIAL 0x00000200
#define MDM_V23_OVERRIDE 0x00000400
typedef struct tagDEVMINICFG {
WORD wVersion; //0
WORD wWaitBong; // DevCfgHdr 2
DWORD dwCallSetupFailTimer; // CommConfig.ModemSettings 4
DWORD dwModemOptions; // CommConfig.ModemSettings 8
// MDM_BLIND_DIAL MDM_FLOWCONTROL_SOFT
// MDM_CCITT_OVERRIDE MDM_FORCED_EC
// MDM_CELLULAR MDM_SPEED_ADJUST
// MDM_COMPRESSION MDM_TONE_DIAL
// MDM_ERROR_CONTROL MDM_V23_OVERRIDE
// MDM_FLOWCONTROL_HARD
DWORD dwBaudRate; // DCB 12
WORD fwOptions; // DevCfgHdr 16
// TERMINAL_PRE TERMINAL_POST
// MANUAL_DIAL
BYTE ByteSize; // DCB 18
BYTE StopBits; // DCB 19
BYTE Parity; // DCB 20
WCHAR szDialModifier[DIAL_MODIFIER_LEN+1]; // Unique to MiniCfg 256+1
// Dynamic devices configuration
WCHAR wszDriverName[MAX_NAME_LENGTH+1]; //8+1
BYTE pConfigBlob[MAX_CFG_BLOB]; //126+1
HANDLE hPort; //4
} DEVMINICFG;
#endif