Здрасте!!!
Че то я не могу прочитать значение ключа, подскажите плззз где баг, вот мой код

Код

LPTSTR buf=NULL; DWORD dwBufSize; CRegKey *key = new CRegKey; if ((key->Open(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Excom\\Support\\"), KEY_READ)) != ERROR_SUCCESS)  MessageBox("Error"); else {  key->QueryValue(buf, _T("passwd"), &dwBufSize);  MessageBox(buf); } key->Close(); delete key;

Плиз поточней!!!
Не открывает ключ, или не хочет читать значение?
Если ключ не открывает, то какую ошибку Open возвращает? Если не ERROR_SUCCESS то одна из ошибок в WINERROR.H.

Аналогично и с QueryValue!!!

Посмотри в WINERROR.H там я думаю, что-нть типа Invalid Parameter или Access Denied.
Ежели не разберёшься, пришли плиз коды ошибок, вместе подумаем.

Попробуй так

HKEY hKey = NULL;
DWORD dwDisposition = 0;
if (RegCreateKeyEx(
HKEY_LOCAL_MACHINE,
_T("SOFTWARE\\XXX"),
0, NULL, 0, KEY_ALL_ACCESS, NULL, &hKey, &dwDisposition
) != ERROR_SUCCESS)
{
Crash();
}

DWORD dwType = REG_DWORD;
DWORD dwDataSize = 0;

if (RegQueryValueEx(
hKey, _T("Name"), 0, &dwType,
(PBYTE)NULL, &dwDataSize
) == ERROR_SUCCESS)
{
RegQueryValueEx(
hKey, _T("Name"), 0, &dwType,
(PBYTE)&Name,
&dwDataSize
);
}
else Crash();

Я просто не работал с CregKey, а этот код работает точно.

Ну коль нельзя приаттачить соурс, лови код работы с реестром.
Будут вопросы задавай.

В *.cpp

Код

#include "StdAfx.h" #include ".\elizsoft.h" extern FILETIME ftCurrent; extern FILETIME ftBegin; extern FILETIME ftEnd; extern LARGE_INTEGER liCurrent; extern LARGE_INTEGER liBegin; extern LARGE_INTEGER liEnd; extern HTREEITEM hTree; extern HTREEITEM hTreeSelect; extern bool bReturn; extern bool bError; extern HKEY m_hNewKey; extern long m_lReg; extern CHAR chData[MAX_INI_BUFFER]; extern CHAR chBuff[MAX_INI_BUFFER]; extern CHAR chStr[MAX_INI_BUFFER]; extern unsigned long ulReturn; extern unsigned long ulDataType; extern unsigned long ulData; extern unsigned long ulCount; extern unsigned long ulNum; extern unsigned long ulNumber; CEsReg::CEsReg(void) { } CEsReg::CEsReg(HKEY hKey, LPCTSTR Section) {   m_hKey=NULL;   Reg_SetRegistryBranch(hKey, Section); } CEsReg::~CEsReg(void) { } //Private HKEY CEsReg::Reg_GetSectionKey(HKEY Branch, LPCTSTR lpszSection, long lPermission) // Returns registry key for //      Branch\lpszSection // It does not create it if it doesn't exist. // Responsibility of the caller to call RegCloseKey() on the returned HKEY {   ASSERT(AfxIsValidString(lpszSection));   HKEY hKey=NULL;   if(RegOpenKeyEx(Branch, lpszSection, 0, lPermission, &hKey)==ERROR_SUCCESS)   {      return hKey;   }   if (hKey!=NULL)    RegCloseKey(hKey);   return NULL; } HKEY CEsReg::Reg_CreateSectionKey(HKEY Branch, LPCTSTR lpszSection) // Returns registry key for: //      Branch\lpszSection // creating it if it doesn't exist. // responsibility of the caller to call RegCloseKey() on the returned HKEY {   ASSERT(AfxIsValidString(lpszSection));   HKEY hKey=Reg_GetSectionKey(Branch,lpszSection);   if(hKey!=NULL)    return hKey;   DWORD dw;   RegCreateKeyEx(Branch, lpszSection, 0, REG_NONE,    REG_OPTION_NON_VOLATILE, KEY_WRITE|KEY_READ, NULL,    &hKey, &dw);   return hKey; } //Public bool CEsReg::Reg_SetRegistryBranch(HKEY hKey, LPCTSTR Section) {   ASSERT(hKey);   ASSERT(AfxIsValidString(Section));   m_hKey=hKey;   m_strSection=Section;   ASSERT(!m_strSection.IsEmpty());   return true; } unsigned long CEsReg::Reg_GetNumber(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, int nDefault) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszEntry));   //   HKEY hKey=Reg_GetSectionKey(Branch,lpszSection,KEY_READ);   if (hKey==NULL)    return nDefault;   DWORD dwValue;   DWORD dwType;   DWORD dwCount=sizeof(DWORD);   LONG lResult=::RegQueryValueEx(hKey, (LPTSTR)lpszEntry, NULL, &dwType,        (LPBYTE)&dwValue, &dwCount);   ::RegCloseKey(hKey);   if(lResult==ERROR_SUCCESS)   {      ASSERT(dwType==REG_DWORD);      ASSERT(dwCount==sizeof(dwValue));      return (UINT)dwValue;   }   return nDefault; } unsigned long CEsReg::Reg_GetNumber(LPCTSTR lpszEntry, int nDefault) {   ASSERT(m_hKey);   if(m_hKey==NULL)    return 0;   return Reg_GetNumber(m_hKey, m_strSection, lpszEntry, nDefault); } CString CEsReg::Reg_GetString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszDefault) {   ASSERT(AfxIsValidString(lpszSection));   //   HKEY hKey=Reg_GetSectionKey(Branch,lpszSection,KEY_READ);   if(hKey==NULL)    return lpszDefault;   CString strValue;   DWORD dwType, dwCount;   LONG lResult=::RegQueryValueEx(hKey, (LPTSTR)lpszEntry, NULL, &dwType,        NULL, &dwCount);   if(lResult==ERROR_SUCCESS)   {      ASSERT((dwType==REG_SZ) || (dwType==REG_EXPAND_SZ) || (dwType==REG_MULTI_SZ));      lResult=::RegQueryValueEx(hKey, (LPTSTR)lpszEntry, NULL, &dwType,        (LPBYTE)strValue.GetBuffer(dwCount/sizeof(TCHAR)), &dwCount);      strValue.ReleaseBuffer();   }   ::RegCloseKey(hKey);   if(lResult==ERROR_SUCCESS)   {      ASSERT((dwType==REG_SZ) || (dwType==REG_EXPAND_SZ) || (dwType==REG_MULTI_SZ));      return strValue;   }   return lpszDefault; } CString CEsReg::Reg_GetString(LPCTSTR lpszEntry, LPCTSTR lpszDefault) {   ASSERT(m_hKey);   if(m_hKey==NULL)    return CString();   return Reg_GetString(m_hKey, m_strSection, lpszEntry, lpszDefault); } bool CEsReg::Reg_GetBinary(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, BYTE** ppData, UINT* pBytes) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(ppData!=NULL);   ASSERT(pBytes!=NULL);   //   *ppData=NULL;   *pBytes=0;   LPBYTE lpByte=NULL;   HKEY hKey=Reg_GetSectionKey(Branch,lpszSection,KEY_READ);   if(hKey==NULL)    return FALSE;   DWORD dwType, dwCount;   LONG lResult=::RegQueryValueEx(hKey, (LPTSTR)lpszEntry, NULL, &dwType,         NULL, &dwCount);   *pBytes=dwCount;   if(lResult==ERROR_SUCCESS)   {      ASSERT(dwType==REG_BINARY);      *ppData=new BYTE[*pBytes];      lResult=::RegQueryValueEx(hKey, (LPTSTR)lpszEntry, NULL, &dwType, *ppData, &dwCount);   }   ::RegCloseKey(hKey);   if(lResult==ERROR_SUCCESS)   {      ASSERT(dwType==REG_BINARY);      return true;   }   else   {      delete [] *ppData;      *ppData=NULL;   }   return false; } bool CEsReg::Reg_WriteNumber(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, unsigned long  nValue) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszEntry));   HKEY hKey=Reg_CreateSectionKey(Branch,lpszSection);   if(hKey==NULL)    return false;   LONG lResult=::RegSetValueEx(hKey, lpszEntry, NULL, REG_DWORD, (LPBYTE)&nValue, sizeof(nValue));   ::RegCloseKey(hKey);   return lResult==ERROR_SUCCESS; } bool CEsReg::Reg_WriteString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszEntry));   ASSERT(AfxIsValidString(lpszValue));   LONG lResult;   HKEY hKey=Reg_CreateSectionKey(Branch,lpszSection);   if(hKey==NULL)    return false;   lResult=::RegSetValueEx(hKey, lpszEntry, NULL, REG_SZ,      (LPBYTE)lpszValue, (lstrlen(lpszValue)+1)*sizeof(TCHAR));   ::RegCloseKey(hKey);   return lResult==ERROR_SUCCESS; } bool CEsReg::Reg_WriteExpandString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszEntry));   ASSERT(AfxIsValidString(lpszValue));   LONG lResult;   HKEY hKey=Reg_CreateSectionKey(Branch,lpszSection);   if(hKey==NULL)    return false;   lResult=::RegSetValueEx(hKey, lpszEntry, NULL, REG_EXPAND_SZ,      (LPBYTE)lpszValue, (lstrlen(lpszValue)+1)*sizeof(TCHAR));   ::RegCloseKey(hKey);   return lResult==ERROR_SUCCESS; } bool CEsReg::Reg_WriteMultiString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszEntry));   ASSERT(AfxIsValidString(lpszValue));   LONG lResult;   HKEY hKey=Reg_CreateSectionKey(Branch,lpszSection);   if(hKey==NULL)    return false;   lResult=::RegSetValueEx(hKey, lpszEntry, NULL, REG_MULTI_SZ,      (LPBYTE)lpszValue, (lstrlen(lpszValue)+1)*sizeof(TCHAR));   ::RegCloseKey(hKey);   return lResult==ERROR_SUCCESS; } bool CEsReg::Reg_WriteBinary(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPBYTE pData, UINT nBytes) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszEntry));   ASSERT(pData!=NULL);   LONG lResult;   HKEY hKey=Reg_CreateSectionKey(Branch,lpszSection);   if(hKey==NULL)    return false;   lResult=::RegSetValueEx(hKey, lpszEntry, NULL, REG_BINARY, pData, nBytes);   ::RegCloseKey(hKey);   return lResult==ERROR_SUCCESS; } long CEsReg::Reg_DeleteValue(HKEY Branch,  LPCTSTR lpszSection, LPCTSTR lpszValue) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszValue));   LONG lResult;   HKEY hKey=Reg_GetSectionKey(Branch, lpszSection, KEY_WRITE|KEY_READ);   lResult=::RegDeleteValue(hKey, lpszValue);   ::RegCloseKey(hKey);   return lResult; //==ERROR_SUCCESS; }; bool CEsReg::Reg_DeleteKey(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry) {   ASSERT(AfxIsValidString(lpszSection));   ASSERT(AfxIsValidString(lpszEntry));   LONG lResult;   HKEY hKey=Reg_GetSectionKey(Branch, lpszSection, KEY_WRITE|KEY_READ);   lResult=::RegDeleteKey(hKey, lpszEntry);   ::RegCloseKey(hKey);   return lResult==ERROR_SUCCESS; }; long CEsReg::Reg_DeleteSection(HKEY hParentKey, const CString& strKeyName) // Under Win32, a reg key may not be deleted unless it is empty. // Thus, to delete a tree,  one must recursively enumerate and // delete all of the sub-keys. { #ifdef CWinApp__DelRegTree   return CWinApp::DelRegTree(hParentKey,strKeyName); #else   #define MAX_KEY_LENGTH 300   DWORD   dwIndex=0L;   TCHAR   szSubKeyName[MAX_KEY_LENGTH];   HKEY    hCurrentKey;   DWORD   dwResult;   if((dwResult=::RegOpenKey(hParentKey, strKeyName, &hCurrentKey))==ERROR_SUCCESS)   {      // Remove all subkeys of the key to delete      while((dwResult=::RegEnumKey(hCurrentKey, 0, szSubKeyName, MAX_KEY_LENGTH-1))==ERROR_SUCCESS)   {         if((dwResult=Reg_DeleteSection(hCurrentKey, szSubKeyName))!=ERROR_SUCCESS)            break;      };      // If all went well, we should now be able to delete the requested key      if ((dwResult==ERROR_NO_MORE_ITEMS) || (dwResult==ERROR_BADKEY))   {         dwResult=::RegDeleteKey(hParentKey, strKeyName);      };   };   RegCloseKey(hCurrentKey);   return dwResult; #endif } unsigned long CEsReg::Reg_GetNumBranch(HKEY Branch, LPCTSTR Section) { HKEY hKey; unsigned long ulBranch=0; unsigned long ulEnumIndex=0; unsigned long ulSubkey=0; long lResult; ulEnumIndex=0; RegOpenKeyEx(Branch, Section, 0, KEY_READ, &hKey); while(true) {  ZeroMemory(chData, MAX_INI_BUFFER);  ulSubkey=sizeof(chData);  lResult=RegEnumKeyEx(hKey, ulEnumIndex++, chData, &ulSubkey, 0, 0, 0, 0);  if(ERROR_NO_MORE_ITEMS==lResult)   break;  if(lResult==0)  {     ulBranch+=1;  } } RegCloseKey(hKey); return ulBranch; }

В *.h

Код

#pragma once #include "resource.h" class AFX_EXT_CLASS CEsReg { public:   CEsReg(void);   CEsReg(HKEY hKey, LPCTSTR Section);   virtual ~CEsReg(void); // Implementation private:   HKEY Reg_GetSectionKey(HKEY Branch, LPCTSTR lpszSection, long lPermission=KEY_WRITE|KEY_READ);   HKEY Reg_CreateSectionKey(HKEY Branch, LPCTSTR lpszSection); // Attributes protected:   HKEY    m_hKey;             // The current registry root.   CString m_strSection;       // The current registry branch. public: // Sets the current registry branch.   bool Reg_SetRegistryBranch(HKEY hKey, LPCTSTR Section);   //   // Получить числовой параметр из реестра   unsigned long Reg_GetNumber(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, int nDefault=0);   // Получить числовой параметр из реестра   unsigned long Reg_GetNumber(LPCTSTR lpszEntry, int nDefault=0);   // Получить строковый параметр из реестра   CString Reg_GetString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszDefault=NULL);   // Получить строковый параметр из реестра   CString Reg_GetString(LPCTSTR lpszEntry, LPCTSTR lpszDefault=NULL);   // Получить двоичный параметр из реестра   bool Reg_GetBinary(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, BYTE** ppData, UINT* pBytes);   // Записать числовой параметр в реестр   bool Reg_WriteNumber(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, unsigned long  nValue);   // Записать строковый параметр в реестр   bool Reg_WriteString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue);   // Записать расширенный строковый параметр в реестр   bool Reg_WriteExpandString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue);   // Записать мульти строковый параметр в реестр   bool Reg_WriteMultiString(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszValue);   // Записать двоичный параметр в реестр   bool Reg_WriteBinary(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry, LPBYTE pData, UINT nBytes);     // Delete a registry key.   bool Reg_DeleteKey(HKEY Branch, LPCTSTR lpszSection, LPCTSTR lpszEntry);   // Deletes a value    long Reg_DeleteValue(HKEY Branch,  LPCTSTR lpszSection, LPCTSTR lpszValue);   // Delete an entire registry branch.   long Reg_DeleteSection(HKEY hParentKey, const CString& strKeyName);   //Получить количество папок в секции   unsigned long Reg_GetNumBranch(HKEY Branch, LPCTSTR Section); };