1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 #ifndef __ACCACT_HXX 23 #define __ACCACT_HXX 24 25 #include <windows.h> 26 #include <tchar.h> 27 28 29 static bool IsXPOrLater() 30 { 31 OSVERSIONINFO osvi; 32 33 ZeroMemory(&osvi, sizeof(OSVERSIONINFO)); 34 35 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); 36 37 GetVersionEx(&osvi); 38 return ((osvi.dwMajorVersion > 5) || 39 ((osvi.dwMajorVersion == 5) && (osvi.dwMinorVersion >= 1))); 40 } 41 42 static HANDLE pActCtx = INVALID_HANDLE_VALUE; 43 static ULONG_PTR lpCookie; 44 45 static bool ActivateActContext() 46 { 47 if(!IsXPOrLater()) 48 return false; 49 50 ACTCTX actctx; 51 52 ZeroMemory(&actctx, sizeof(actctx)); 53 54 actctx.cbSize = sizeof(actctx); 55 56 TCHAR szDllDirPath[1024]; 57 ::GetCurrentDirectory(1024,szDllDirPath); 58 LPTSTR szDllPath = szDllDirPath; 59 lstrcat(szDllPath, _T("\\UAccCOM.dll")); 60 61 actctx.lpSource = szDllPath; 62 actctx.lpResourceName = MAKEINTRESOURCE(97); 63 actctx.dwFlags = ACTCTX_FLAG_RESOURCE_NAME_VALID; 64 65 HANDLE pActCtx = CreateActCtx(&actctx); 66 67 if(pActCtx != INVALID_HANDLE_VALUE) 68 { 69 if(ActivateActCtx(pActCtx, &lpCookie)) 70 { 71 return true; 72 } 73 } 74 pActCtx = INVALID_HANDLE_VALUE; 75 lpCookie = 0; 76 return false; 77 } 78 79 static void DeactivateActContext() 80 { 81 if(!IsXPOrLater()) 82 return; 83 84 if(lpCookie) 85 DeactivateActCtx(0, lpCookie); 86 87 if(pActCtx!=INVALID_HANDLE_VALUE) 88 ReleaseActCtx(pActCtx); 89 } 90 #endif