int SetRecordVideoSavedDays(int newSavedDays)2 {3     HKEY hSubKey = NULL;4     LONG lRet    = 0;5     DWORD dwType = 0;6     int iRet     = 0;7     8     do 9     {10         if (newSavedDays < 0)11         {12             printf("error: input negative number\n");13             break;14         }15         lRet = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Cloudsoar 3C\\ServerInfo",16                                 0, NULL, REG_OPTION_NON_VOLATILE, 17                                 KEY_ALL_ACCESS, NULL, &hSubKey, NULL);       18         if (ERROR_SUCCESS != lRet)19         {20             printf("Create Reg failed\n");21             break;22         }23         24         lRet = RegSetValueEx(hSubKey, "VideoSavedDays", 0, REG_DWORD, (BYTE*)&newSavedDays, sizeof(newSavedDays));25         if (ERROR_SUCCESS != lRet)26         {27             printf("Set reg value VideoSavedDays failed\n");28             break;29         }30         31         iRet = (int)newSavedDays;32     } while (0);33     34     if(NULL != hSubKey)35     {36         RegCloseKey(hSubKey);37         hSubKey = NULL;38     }39   40     41     return iRet;42 }43 44 // parameter1: out, save video saved path45 // parameter2: in, save path length46 BOOL GetRecordVideoSavedPath(char *pchPath,int pathBufLen)47 {48     HKEY hSubKey    = NULL;49     LONG lRet       = 0;50     DWORD dwType    = 0;51     DWORD dwPathLen = pathBufLen;52     BOOL bRet       = FALSE;53     54     do 55     {56         lRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE, 57                             "SOFTWARE\\Cloudsoar 3C\\ServerInfo",58                             0, KEY_READ, &hSubKey);59         if (ERROR_SUCCESS != lRet)60         {61             printf("Open reg value VideoSavedPath failed\n");62             break;63         }64         65         lRet = RegQueryValueEx(hSubKey, "VideoSavedPath", 66                                 0, &dwType, (LPBYTE)pchPath, &dwPathLen);67         if (ERROR_SUCCESS != lRet)68         {69             printf("Query reg value VideoSavedPath failed\n");70             break;71         }72         73         bRet = TRUE;74         75     } while (0);76     77     RegCloseKey(hSubKey);78   79     return bRet;80 }81 82 BOOL SetRecordVideoSavePath(char *pchNewPath)83 {84     HKEY hSubKey  = NULL;85     LONG lRet     = 0;86     DWORD dwType  = 0;87     DWORD dwState = 0;88     BOOL bRet     = FALSE;89 90     do 91     {92         if (NULL == pchNewPath)93         {94             printf("error: input negative new path\n");95             break;96         }97         lRet = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Cloudsoar 3C\\ServerInfo",98             0, NULL, REG_OPTION_NON_VOLATILE, 99             KEY_ALL_ACCESS, NULL, &hSubKey, &dwState);
100         if (ERROR_SUCCESS != lRet)
101         {
102             printf("Create Reg VideoSavedPath failed\n");
103             break;
104         }
105
106         lRet = RegSetValueEx(hSubKey, "VideoSavedPath", 0, REG_SZ, (PBYTE)pchNewPath, sizeof(pchNewPath));
107         if (ERROR_SUCCESS != lRet)
108         {
109             printf("Set reg value VideoSavedPath failed\n");
110             break;
111         }
112
113         bRet = TRUE;
114     } while (0);
115
116     RegCloseKey(hSubKey);
117
118     return bRet;
119 }

 1 LONG RegCreateKeyEx(2 HKEY hKey, // handle to open key3 LPCTSTR lpSubKey, // subkey name4 DWORD Reserved, // reserved5 LPTSTR lpClass, // class string6 DWORD dwOptions, // special options7 REGSAM samDesired, // desired security access8 LPSECURITY_ATTRIBUTES lpSecurityAttributes, // inheritance9 PHKEY phkResult, // key handle
10 LPDWORD lpdwDisposition // disposition value buffer
11 );

1 hKey: 　　要打开键的句柄或以下预定义句柄2 HKEY_CLASSES_ROOT3 HKEY_CURRENT_USER4 HKEY_LOCAL_MACHINE5 HKEY_USERS6 lpSubKey: 　　指向一个用于定义子键路径的字符串7 Reserved,dwOptions,samDesired: 　　置08 lpClass,lpSecurityAttributes: 　　置NULL9 phkResult: 　　用于接收键句柄
10 lpdwDisposition: 　　接收的相关信息,取值如下
11 REG_CREATED_NEW_KEY 　　创建成功
12 REG_OPENED_EXISTING_KEY 　　 键已存在

1 LONG RegOpenKeyEx(
2     HKEY hKey, // handle to open key
3     LPCTSTR lpSubKey, // subkey name
4     DWORD ulOptions, // reserved
5     REGSAM samDesired, // security access mask
6     PHKEY phkResult // handle to open key
7 );

1 hKey: 　 　　要打开键的句柄或以下预定义句柄
2 HKEY_CLASSES_ROOT
3 HKEY_CURRENT_USER
4 HKEY_LOCAL_MACHINE
5 HKEY_USERS
6 lpSubKey: 　　指向一个用于定义子键路径的字符串
7 ulOptions: 　　保留位,置0
8 samDesired: 　　打开键后键的操作权限
9 phResult: 　　接收打开的键的句柄

1 LONG RegSetValueEx(
2     HKEY hKey, // handle to key
3     LPCTSTR lpValueName, // value name
4     DWORD Reserved, // reserved
5     DWORD dwType, // value type
6     CONST BYTE *lpData, // value data
7     DWORD cbData // size of value data
8 );

1 hKey: 　　打开键的句柄或以下预定义句柄2 HKEY_CLASSES_ROOT3 HKEY_CURRENT_USER4 HKEY_LOCAL_MACHINE5 HKEY_USERS6 lpValueName: 　　键值的名称7 Reserved: 　　保留位,置08 dwType: 　　键值的类型9 lpData: 　　键值
10 cbData: 　　键值数据长度