diff options
Diffstat (limited to 'winaccessibility/inc/act.hxx')
| -rw-r--r-- | winaccessibility/inc/act.hxx | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/winaccessibility/inc/act.hxx b/winaccessibility/inc/act.hxx new file mode 100644 index 000000000000..09fb1e3ac767 --- /dev/null +++ b/winaccessibility/inc/act.hxx @@ -0,0 +1,90 @@ +/************************************************************** + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + *************************************************************/ + +#ifndef __ACCACT_HXX +#define __ACCACT_HXX + +#include <windows.h> +#include <tchar.h> + + +static bool IsXPOrLater() +{ + OSVERSIONINFO osvi; + + ZeroMemory(&osvi, sizeof(OSVERSIONINFO)); + + osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + + GetVersionEx(&osvi); + return ((osvi.dwMajorVersion > 5) || + ((osvi.dwMajorVersion == 5) && (osvi.dwMinorVersion >= 1))); +} + +static HANDLE pActCtx = INVALID_HANDLE_VALUE; +static ULONG_PTR lpCookie; + +static bool ActivateActContext() +{ + if(!IsXPOrLater()) + return false; + + ACTCTX actctx; + + ZeroMemory(&actctx, sizeof(actctx)); + + actctx.cbSize = sizeof(actctx); + + TCHAR szDllDirPath[1024]; + ::GetCurrentDirectory(1024,szDllDirPath); + LPTSTR szDllPath = szDllDirPath; + lstrcat(szDllPath, _T("\\UAccCOM.dll")); + + actctx.lpSource = szDllPath; + actctx.lpResourceName = MAKEINTRESOURCE(97); + actctx.dwFlags = ACTCTX_FLAG_RESOURCE_NAME_VALID; + + HANDLE pActCtx = CreateActCtx(&actctx); + + if(pActCtx != INVALID_HANDLE_VALUE) + { + if(ActivateActCtx(pActCtx, &lpCookie)) + { + return true; + } + } + pActCtx = INVALID_HANDLE_VALUE; + lpCookie = 0; + return false; +} + +static void DeactivateActContext() +{ + if(!IsXPOrLater()) + return; + + if(lpCookie) + DeactivateActCtx(0, lpCookie); + + if(pActCtx!=INVALID_HANDLE_VALUE) + ReleaseActCtx(pActCtx); +} +#endif
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