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Java example source code file (awt_Pen.cpp)
The awt_Pen.cpp Java example source code/* * Copyright (c) 1996, 2005, 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. */ #include "awt_Pen.h" GDIHashtable AwtPen::cache("Pen cache", DeleteAwtPen); AwtPen::AwtPen(COLORREF color) { if (!EnsureGDIObjectAvailability()) { // If we've run out of GDI objects, don't try to create // a new one return; } SetColor(color); HPEN pen = ::CreatePen(PS_SOLID, 1, color); /* * Fix for BugTraq ID 4191297. * If GDI resource creation failed flush all GDIHashtables * to destroy unreferenced GDI resources. */ if (pen == NULL) { cache.flushAll(); pen = ::CreatePen(PS_SOLID, 1, color); } DASSERT(pen != NULL); SetHandle(pen); if (pen == NULL) { // We've already incremented the counter: decrement if // creation failed Decrement(); } } AwtPen* AwtPen::Get(COLORREF color) { CriticalSection::Lock l(cache.getManagerLock()); AwtPen* obj = static_cast<AwtPen*>(cache.get( reinterpret_cast<void*>(static_cast Other Java examples (source code examples)Here is a short list of links related to this Java awt_Pen.cpp source code file: |
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