vc Ip、子网掩码、默认网关、首选DNS服务器

来源：互联网发布：金融大数据发展趋势编辑：程序博客网时间：2024/04/30 02:20

Ip、子网掩码、默认网关、首选DNS服务器相关信息在注册表之中，改变注册表的值，然后通知所以应用程序即可，代码如下：
BOOL SetIP(LPCTSTR lpszAdapterName, int nIndex, LPCTSTR pIPAddress, LPCTSTR pNetMask, LPCTSTR pNetGate)
{
HKEY hKey;
CString strKeyName = "SYSTEM//CurrentControlSet//Services//Tcpip//Parameters//Interfaces// ";
strKeyName += lpszAdapterName;
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
strKeyName,
0,
KEY_WRITE,
&hKey) != ERROR_SUCCESS)
return FALSE;

char mszIPAddress[100];
char mszNetMask[100];
char mszNetGate[100];

strncpy(mszIPAddress, pIPAddress, 98);
strncpy(mszNetMask, pNetMask, 98);
strncpy(mszNetGate, pNetGate, 98);

int nIP, nMask, nGate;

nIP = strlen(mszIPAddress);
nMask = strlen(mszNetMask);
nGate = strlen(mszNetGate);

*(mszIPAddress + nIP + 1) = 0x00;
nIP += 2;

*(mszNetMask + nMask + 1) = 0x00;
nMask += 2;

*(mszNetGate + nGate + 1) = 0x00;
nGate += 2;

RegSetValueEx(hKey, "IPAddress ", 0, REG_MULTI_SZ, (unsigned char*)mszIPAddress, nIP);
RegSetValueEx(hKey, "SubnetMask ", 0, REG_MULTI_SZ, (unsigned char*)mszNetMask, nMask);
RegSetValueEx(hKey, "DefaultGateway ", 0, REG_MULTI_SZ, (unsigned char*)mszNetGate, nGate);

RegCloseKey(hKey);

//通知IP地址改变
BOOL bResult = FALSE;
HINSTANCE hDhcpDll;
DHCPNOTIFYPROC pDhcpNotifyProc;
WCHAR wcAdapterName[256];

MultiByteToWideChar(CP_ACP, 0, lpszAdapterName, -1, wcAdapterName,256);

if((hDhcpDll = LoadLibrary( "dhcpcsvc ")) == NULL)
return FALSE;

if((pDhcpNotifyProc = (DHCPNOTIFYPROC)GetProcAddress(hDhcpDll, "DhcpNotifyConfigChange ")) != NULL)
if((pDhcpNotifyProc)(NULL, wcAdapterName, TRUE, nIndex, inet_addr(pIPAddress), inet_addr(pNetMask), 0) == ERROR_SUCCESS)
bResult = TRUE;

FreeLibrary(hDhcpDll);

return TRUE;
}