187 lines
4.1 KiB
C++
187 lines
4.1 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1996.
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//
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// File: registry.cxx
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//
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// Contents: Registry utilities
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//
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// Classes:
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//
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// Functions:
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//
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// History: 23-May-1996 RamV (Ram Viswanathan) Created
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//
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//----------------------------------------------------------------------------
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#include "procs.hxx"
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#pragma hdrstop
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//+---------------------------------------------------------------------------
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//
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// Function: SetKeyAndValue
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//
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// Synopsis: Used for setting a key value
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//
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//
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// Arguments: pszRegLocation: where to look for/create key
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// pszKey : name of the Key
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// pszSubKey: name of the subkey
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// pszValue : Value to set
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//
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// Returns: HRESULT
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//
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// Modifies:
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//
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// History: 5/21/1996 RamV Created.
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//
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//----------------------------------------------------------------------------
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HRESULT
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SetKeyAndValue(
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LPTSTR pszRegLocation,
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LPTSTR pszKey,
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LPTSTR pszSubKey,
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LPTSTR pszValue
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)
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{
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HKEY hKey;
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TCHAR szKey[MAX_PATH];
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LONG lErrorCode;
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HRESULT hr = S_OK;
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_tcscpy(szKey, pszRegLocation);
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if (pszSubKey != NULL){
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_tcscpy(szKey, TEXT("\\"));
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_tcscat(szKey, pszSubKey);
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}
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lErrorCode = RegCreateKeyEx(HKEY_CURRENT_USER,
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szKey,
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0,
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NULL,
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REG_OPTION_NON_VOLATILE,
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KEY_ALL_ACCESS,
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NULL,
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&hKey,
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NULL);
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if (lErrorCode != ERROR_SUCCESS){
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return HRESULT_FROM_WIN32(lErrorCode);
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}
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if (pszValue != NULL){
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lErrorCode = RegSetValueEx(hKey,
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pszKey,
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0,
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REG_SZ,
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(BYTE *)pszValue,
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(_tcslen(pszValue)+1)*sizeof(TCHAR));
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if(lErrorCode != ERROR_SUCCESS){
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hr = HRESULT_FROM_WIN32(lErrorCode);
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goto cleanup;
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}
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}
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cleanup:
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RegCloseKey(hKey);
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return S_OK;
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}
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HRESULT
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QueryKeyValue(
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LPTSTR pszRegLocation,
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LPTSTR pszKey,
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LPTSTR * ppszValue
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)
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{
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LONG lErrorCode;
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TCHAR szKey[MAX_PATH];
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DWORD dwDataLen;
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DWORD dwType;
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HKEY hKey = NULL;
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HRESULT hr = S_OK;
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dwDataLen = sizeof(TCHAR)* MAX_PATH;
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*ppszValue = (LPTSTR)AllocADsMem( dwDataLen );
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if(!*ppszValue){
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hr = E_OUTOFMEMORY;
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goto cleanup;
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}
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_tcscpy(szKey, pszRegLocation);
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lErrorCode = RegOpenKeyEx(HKEY_CURRENT_USER,
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szKey,
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NULL,
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KEY_READ,
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&hKey);
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if( lErrorCode != ERROR_SUCCESS){
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hr = HRESULT_FROM_WIN32(lErrorCode);
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goto cleanup;
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}
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lErrorCode = RegQueryValueEx(hKey,
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pszKey,
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NULL,
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&dwType,
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(LPBYTE)*ppszValue,
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&dwDataLen);
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if (lErrorCode == ERROR_MORE_DATA){
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FreeADsMem(*ppszValue);
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*ppszValue = NULL;
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*ppszValue = (LPTSTR)AllocADsMem (dwDataLen);
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if(!*ppszValue){
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hr = E_OUTOFMEMORY;
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goto cleanup;
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}
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lErrorCode = RegQueryValueEx(hKey,
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pszKey,
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NULL,
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&dwType,
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(LPBYTE)*ppszValue,
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&dwDataLen);
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hr = HRESULT_FROM_WIN32(lErrorCode);
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BAIL_IF_ERROR(hr);
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} else if (lErrorCode != ERROR_SUCCESS) {
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hr = HRESULT_FROM_WIN32(lErrorCode);
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FreeADsMem(*ppszValue);
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*ppszValue = NULL;
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}
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cleanup:
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if(hKey){
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RegCloseKey(hKey);
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}
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RRETURN(hr);
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}
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