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    <p>I guess I found the answer myself in <a href="http://msdn.microsoft.com/en-us/library/ms724235(VS.85).aspx" rel="noreferrer">MSDN</a>. It puzzles me that the functionality is not available through the SDK, though...<br> I put the code from MSDN here as well, just for the record:</p> <pre><code>//************************************************************* // // RegDelnodeRecurse() // // Purpose: Deletes a registry key and all it's subkeys / values. // // Parameters: hKeyRoot - Root key // lpSubKey - SubKey to delete // // Return: TRUE if successful. // FALSE if an error occurs. // //************************************************************* BOOL RegDelnodeRecurse (HKEY hKeyRoot, LPTSTR lpSubKey) { LPTSTR lpEnd; LONG lResult; DWORD dwSize; TCHAR szName[MAX_PATH]; HKEY hKey; FILETIME ftWrite; // First, see if we can delete the key without having // to recurse. lResult = RegDeleteKey(hKeyRoot, lpSubKey); if (lResult == ERROR_SUCCESS) return TRUE; lResult = RegOpenKeyEx (hKeyRoot, lpSubKey, 0, KEY_READ, &amp;hKey); if (lResult != ERROR_SUCCESS) { if (lResult == ERROR_FILE_NOT_FOUND) { printf("Key not found.\n"); return TRUE; } else { printf("Error opening key.\n"); return FALSE; } } // Check for an ending slash and add one if it is missing. lpEnd = lpSubKey + lstrlen(lpSubKey); if (*(lpEnd - 1) != TEXT('\\')) { *lpEnd = TEXT('\\'); lpEnd++; *lpEnd = TEXT('\0'); } // Enumerate the keys dwSize = MAX_PATH; lResult = RegEnumKeyEx(hKey, 0, szName, &amp;dwSize, NULL, NULL, NULL, &amp;ftWrite); if (lResult == ERROR_SUCCESS) { do { StringCchCopy (lpEnd, MAX_PATH*2, szName); if (!RegDelnodeRecurse(hKeyRoot, lpSubKey)) { break; } dwSize = MAX_PATH; lResult = RegEnumKeyEx(hKey, 0, szName, &amp;dwSize, NULL, NULL, NULL, &amp;ftWrite); } while (lResult == ERROR_SUCCESS); } lpEnd--; *lpEnd = TEXT('\0'); RegCloseKey (hKey); // Try again to delete the key. lResult = RegDeleteKey(hKeyRoot, lpSubKey); if (lResult == ERROR_SUCCESS) return TRUE; return FALSE; } //************************************************************* // // RegDelnode() // // Purpose: Deletes a registry key and all it's subkeys / values. // // Parameters: hKeyRoot - Root key // lpSubKey - SubKey to delete // // Return: TRUE if successful. // FALSE if an error occurs. // //************************************************************* BOOL RegDelnode (HKEY hKeyRoot, LPTSTR lpSubKey) { TCHAR szDelKey[MAX_PATH*2]; StringCchCopy (szDelKey, MAX_PATH*2, lpSubKey); return RegDelnodeRecurse(hKeyRoot, szDelKey); } </code></pre>
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