JDK14/Java14源码在线阅读

/*
 * Copyright (c) 1999, 2016, 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 <jawt.h>
#include "jni_util.h"

#include "awt_DrawingSurface.h"

/*
 * Declare library specific JNI_Onload entry if static build
 */
DEF_STATIC_JNI_OnLoad

/*
 * Get the AWT native structure.  This function returns JNI_FALSE if
 * an error occurs.
 */
JNIEXPORT jboolean JNICALL JAWT_GetAWT(JNIEnv* env, JAWT* awt)
{
#if defined(HEADLESS)
    /* there are no AWT libs available at all */
    return JNI_FALSE;
#else
    if (awt == NULL) {
        return JNI_FALSE;
    }

    if (awt->version != JAWT_VERSION_1_3
        && awt->version != JAWT_VERSION_1_4
        && awt->version != JAWT_VERSION_1_7
        && awt->version != JAWT_VERSION_9) {
        return JNI_FALSE;
    }

    awt->GetDrawingSurface = awt_GetDrawingSurface;
    awt->FreeDrawingSurface = awt_FreeDrawingSurface;
    if (awt->version >= JAWT_VERSION_1_4) {
        awt->Lock = awt_Lock;
        awt->Unlock = awt_Unlock;
        awt->GetComponent = awt_GetComponent;

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