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Java example source code file (DllUtil.h)
The DllUtil.h Java example source code/* * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #ifndef DLLUTIL_H #define DLLUTIL_H #include <tchar.h> #include <windows.h> /** * Utility class to handle dynamically loadable libraries. * * NOTE: THIS CLASS IS NOT THREAD-SAFE! */ class DllUtil { public: class Exception {}; class LibraryUnavailableException : public Exception {}; class FunctionUnavailableException : public Exception {}; FARPROC GetProcAddress(LPCSTR name); protected: DllUtil(const char * name) : name(name), module(NULL) {} virtual ~DllUtil(); HMODULE GetModule(); template <class FunctionType> class Function { public: Function(DllUtil * dll, LPCSTR name) : dll(dll), name(name), function(NULL) {} inline FunctionType operator () () { if (!function) { function = (FunctionType)dll->GetProcAddress(name); } return function; } private: DllUtil * const dll; LPCSTR name; FunctionType function; }; private: const char * const name; HMODULE module; }; class DwmAPI : public DllUtil { public: // See DWMWINDOWATTRIBUTE enum in dwmapi.h static const DWORD DWMWA_EXTENDED_FRAME_BOUNDS = 9; static HRESULT DwmIsCompositionEnabled(BOOL * pfEnabled); static HRESULT DwmGetWindowAttribute(HWND hwnd, DWORD dwAttribute, PVOID pvAttribute, DWORD cbAttribute); private: static DwmAPI & GetInstance(); DwmAPI(); typedef HRESULT (WINAPI *DwmIsCompositionEnabledType)(BOOL*); Function<DwmIsCompositionEnabledType> DwmIsCompositionEnabledFunction; typedef HRESULT (WINAPI *DwmGetWindowAttributeType)(HWND hwnd, DWORD dwAttribute, PVOID pvAttribute, DWORD cbAttribute); Function<DwmGetWindowAttributeType> DwmGetWindowAttributeFunction; }; #endif // DLLUTIL_H Other Java examples (source code examples)Here is a short list of links related to this Java DllUtil.h source code file: |
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