2005-01-24 14:32:26 +01:00
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/*
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* Setupapi miscellaneous functions
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*
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* Copyright 2005 Eric Kohl
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winreg.h"
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#include "setupapi.h"
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2005-01-25 20:02:08 +01:00
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#include "wine/unicode.h"
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2005-01-24 14:32:26 +01:00
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/**************************************************************************
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* MyFree [SETUPAPI.@]
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*
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* Frees an allocated memory block from the process heap.
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*
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* PARAMS
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* lpMem [I] pointer to memory block which will be freed
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*
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* RETURNS
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* None
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*/
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VOID WINAPI MyFree(LPVOID lpMem)
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{
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HeapFree(GetProcessHeap(), 0, lpMem);
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}
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/**************************************************************************
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* MyMalloc [SETUPAPI.@]
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*
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* Allocates memory block from the process heap.
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*
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* PARAMS
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* dwSize [I] size of the allocated memory block
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*
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* RETURNS
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* Success: pointer to allocated memory block
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* Failure: NULL
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*/
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LPVOID WINAPI MyMalloc(DWORD dwSize)
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{
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return HeapAlloc(GetProcessHeap(), 0, dwSize);
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}
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/**************************************************************************
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* MyRealloc [SETUPAPI.@]
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*
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* Changes the size of an allocated memory block or allocates a memory
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* block from the process heap.
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*
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* PARAMS
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* lpSrc [I] pointer to memory block which will be resized
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* dwSize [I] new size of the memory block
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*
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* RETURNS
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* Success: pointer to the resized memory block
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* Failure: NULL
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*
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* NOTES
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* If lpSrc is a NULL-pointer, then MyRealloc allocates a memory
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* block like MyMalloc.
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*/
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LPVOID WINAPI MyRealloc(LPVOID lpSrc, DWORD dwSize)
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{
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if (lpSrc == NULL)
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return HeapAlloc(GetProcessHeap(), 0, dwSize);
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return HeapReAlloc(GetProcessHeap(), 0, lpSrc, dwSize);
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}
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2005-01-25 20:02:08 +01:00
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/**************************************************************************
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* DuplicateString [SETUPAPI.@]
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*
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* Duplicates a unicode string.
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*
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* PARAMS
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* lpSrc [I] pointer to the unicode string that will be duplicated
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*
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* RETURNS
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* Success: pointer to the duplicated unicode string
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* Failure: NULL
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*
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* NOTES
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* Call MyFree() to release the duplicated string.
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*/
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LPWSTR WINAPI DuplicateString(LPCWSTR lpSrc)
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{
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LPWSTR lpDst;
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lpDst = MyMalloc((lstrlenW(lpSrc) + 1) * sizeof(WCHAR));
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if (lpDst == NULL)
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return NULL;
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strcpyW(lpDst, lpSrc);
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return lpDst;
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}
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/**************************************************************************
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* QueryRegistryValue [SETUPAPI.@]
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*
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* Retrieves value data from the registry and allocates memory for the
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* value data.
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*
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* PARAMS
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* hKey [I] Handle of the key to query
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* lpValueName [I] Name of value under hkey to query
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* lpData [O] Destination for the values contents,
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* lpType [O] Destination for the value type
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* lpcbData [O] Destination for the size of data
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*
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* RETURNS
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* Success: ERROR_SUCCESS
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* Failure: Otherwise
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*
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* NOTES
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* Use MyFree to release the lpData buffer.
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*/
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LONG WINAPI QueryRegistryValue(HKEY hKey,
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LPCWSTR lpValueName,
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LPBYTE *lpData,
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LPDWORD lpType,
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LPDWORD lpcbData)
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{
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LONG lError;
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/* Get required buffer size */
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*lpcbData = 0;
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lError = RegQueryValueExW(hKey, lpValueName, 0, lpType, NULL, lpcbData);
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if (lError != ERROR_SUCCESS)
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return lError;
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/* Allocate buffer */
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*lpData = MyMalloc(*lpcbData);
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if (*lpData == NULL)
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return ERROR_NOT_ENOUGH_MEMORY;
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/* Query registry value */
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lError = RegQueryValueExW(hKey, lpValueName, 0, lpType, *lpData, lpcbData);
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if (lError != ERROR_SUCCESS)
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MyFree(*lpData);
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return lError;
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}
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