96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved
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//
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#include "util.h"
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//
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// Helper function of allocating memory from process heap
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//
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// Argument:
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// dwBytes number of bytes to allocate.
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//
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// Return value:
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// allocated memory address
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//
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LPVOID AllocateMemory(SIZE_T dwBytes)
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{
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return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dwBytes);
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}
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//
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// Helper function of freeing memory
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//
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// Argument:
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// lpMem memory address to free.
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//
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void FreeMemory(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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// set thread preferred UILanguages from given MI_Context and
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// return original thread preferred UI Languages
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//
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// Argument:
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// context MI_Context object contains the UI Locale setting from client
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// ppOrgUILang Orignal thread preferred UI Languages
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//
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void SetUILocale(
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__in MI_Context *context,
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_Deref_out_opt_z_ LPWSTR *ppOrgUILang)
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{
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MI_Char UILocale[MI_MAX_LOCALE_SIZE];
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MI_Result r;
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LPWSTR pOrgUILang = NULL;
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ULONG numLangs = 0;
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ULONG lenBuffer = 0;
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*ppOrgUILang = NULL;
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memset(UILocale, 0, sizeof(UILocale));
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r = MI_GetLocale(context, MI_LOCALE_TYPE_REQUESTED_UI, UILocale);
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if (r != MI_RESULT_OK)
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{
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return;
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}
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if (!GetThreadPreferredUILanguages(0, &numLangs, NULL, &lenBuffer))
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{
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return;
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}
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pOrgUILang = (LPWSTR)AllocateMemory(sizeof(wchar_t)*lenBuffer);
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if (pOrgUILang == NULL)
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{
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return;
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}
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if (!GetThreadPreferredUILanguages(0, &numLangs, pOrgUILang, &lenBuffer))
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{
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// release the buffer
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FreeMemory(pOrgUILang);
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return;
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}
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// Set the prefferred UI locale and ignore the result
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SetThreadPreferredUILanguages(0, UILocale, &numLangs);
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*ppOrgUILang = pOrgUILang;
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}
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//
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// reset thread preferred UILanguages and release buffer
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// of given parameter pOrgUILang
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//
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// Argument:
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// pOrgUILang Orignal thread preferred UI Languages
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//
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void ResetUILocale(__in_z LPWSTR pOrgUILang)
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{
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if (NULL != pOrgUILang)
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{
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ULONG numLangs = 0;
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SetThreadPreferredUILanguages(0, pOrgUILang, &numLangs);
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FreeMemory(pOrgUILang);
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}
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}
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