难者不会，会者不难，关于注册表的操作！

[supershot]

在VC++程序中写注册表，要求在Section下再写入多个Section,下面的Section再包含Entity,相当于一种目录层次结构，不知道如何实现，请各路高手指点，不胜感激！

[binghuodao]

用API。
RegOpenKeyEx
RegCloseKey
RegEnumKeyEx
RegEnumValue
RegQueryValueEx
RegCreateKeyEx
RegSetValueEx
RegDeleteKey
等

[songshi]

ATL框架中提供一个CRegKey类 比较好用
如果你要在MFC下写程序就将这个类的一些ATL宏利用替换功能替换成MFC的就可以了
可以用Find in file在ATL的目录中找"class CRegKey"来查找这个类的源码并将其写到一个单独的文件中即可 或者自己对其进行修改使之更方便

[panda_w]

http://www.vckbase.com/document/system/index.html
有几篇文档，看看吧

[AtCsdn]

如要CRegistry类的源码，请与我联系。
该类不依赖于任何东东（MFC,ATL等）.

[cofan]

很早以前写的，自己改改吧
extern "C" DllExport BOOL NICAL_WritePrivateProfileString(
LPCTSTR lpAppName, // pointer to section name
LPCTSTR lpKeyName, // pointer to key name
LPCTSTR lpString, // pointer to string to add
LPCTSTR lpFileName // pointer to initialization filename
)
{
HKEY hWriteKey;
LONG IRC;
BOOL flag = FALSE;
DWORD dwDataType;
char keyname[1024];
sprintf(keyname,"Software\\Nical\\%s\\%s",lpFileName,lpAppName);
IRC = RegCreateKeyEx(HKEY_LOCAL_MACHINE,keyname,
0,NULL,REG_OPTION_NON_VOLATILE,KEY_WRITE,NULL,&hWriteKey,&dwDataType);
if(IRC==ERROR_SUCCESS)
{
if (lpString != NULL)
{
IRC = RegSetValueEx(hWriteKey,lpKeyName,NULL,REG_SZ,(LPBYTE)lpString,
strlen(lpString)+1);
flag = TRUE;
}
IRC = RegCloseKey(hWriteKey);
}
return flag;
}
extern "C" DllExport BOOL NICAL_GetPrivateProfileString(
LPCTSTR lpAppName, // points to section name
LPCTSTR lpKeyName, // points to key name
LPCTSTR lpDefault, // points to default string
LPTSTR lpReturnedString, // points to destination buffer
DWORD nSize, // size of destination buffer
LPCTSTR lpFileName // points to initialization filename
)
{
HKEY hReadKey;
DWORD dwDataType;
LONG IRC;
char sub[254];
BOOL flag=FALSE;
if (lpReturnedString==NULL)
return flag;
lpReturnedString[0] = 0;
sprintf(sub,"Software\\Nical\\%s\\%s",lpFileName,lpAppName);
IRC=RegOpenKeyEx(HKEY_LOCAL_MACHINE,sub,0,KEY_READ,&hReadKey);
if(IRC==ERROR_SUCCESS)
{
IRC = RegQueryValueEx(hReadKey,lpKeyName,NULL,&dwDataType,(LPBYTE)lpReturnedString,
&nSize);
if(IRC==ERROR_SUCCESS)
flag = TRUE;
IRC = RegCloseKey(hReadKey);
}
return flag;
}
extern "C" DllExport BOOL NICAL_DeletePrivateProfileString(
LPCTSTR lpAppName, // pointer to section name
LPCTSTR lpKeyName, // pointer to key name
LPCTSTR lpFileName // pointer to initialization filename
)
{
HKEY hDeleteKey;
LONG IRC;
char sub[254];
BOOL flag = FALSE;
sprintf(sub,"Software\\Nical\\%s\\%s",lpFileName,lpAppName);
IRC=RegOpenKeyEx(HKEY_LOCAL_MACHINE,sub,0,KEY_READ,&hDeleteKey);
if(IRC==ERROR_SUCCESS)
{
IRC = RegDeleteValue(hDeleteKey,lpKeyName);
if(IRC==ERROR_SUCCESS)
flag = TRUE;
IRC = RegCloseKey(hDeleteKey);
}
return flag;
}
extern "C" DllExport BOOL NICAL_DeletePrivateProfileSection(
LPCTSTR lpAppName, // pointer to section name
LPCTSTR lpFileName // pointer to initialization filename
)
{
HKEY hDeleteKey;
LONG IRC;
char sub[254];
BOOL flag = FALSE;
sprintf(sub,"Software\\Nical\\%s",lpFileName);
IRC=RegOpenKeyEx(HKEY_LOCAL_MACHINE,sub,0,KEY_READ,&hDeleteKey);
if(IRC==ERROR_SUCCESS)
{
IRC = RegDeleteKey(hDeleteKey,lpAppName);
if(IRC==ERROR_SUCCESS)
flag = TRUE;
IRC = RegCloseKey(hDeleteKey);
}
return flag;
}
extern "C" DllExport BOOL NICAL_DeletePrivateProfile(
LPCTSTR lpFileName // pointer to initialization filename
)
{
HKEY hDeleteKey;
LONG IRC;
char sub[254];
BOOL flag = FALSE;
sprintf(sub,"Software\\Nical");
IRC=RegOpenKeyEx(HKEY_LOCAL_MACHINE,sub,0,KEY_READ,&hDeleteKey);
if(IRC==ERROR_SUCCESS)
{
IRC = RegDeleteKey(hDeleteKey,lpFileName);
if(IRC==ERROR_SUCCESS)
flag = TRUE;
IRC = RegCloseKey(hDeleteKey);
}
return flag;
}