1 /*

        2  * Copyright 2005-2008 Sun Microsystems, Inc.  All Rights Reserved.

        3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

        4  *

        5  * This code is free software; you can redistribute it and/or modify it

        6  * under the terms of the GNU General Public License version 2 only, as

        7  * published by the Free Software Foundation.  Sun designates this

        8  * particular file as subject to the "Classpath" exception as provided

        9  * by Sun in the LICENSE file that accompanied this code.

       10  *

       11  * This code is distributed in the hope that it will be useful, but WITHOUT

       12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

       13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

       14  * version 2 for more details (a copy is included in the LICENSE file that

       15  * accompanied this code).

       16  *

       17  * You should have received a copy of the GNU General Public License version

       18  * 2 along with this work; if not, write to the Free Software Foundation,

       19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

       20  *

       21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

       22  * CA 95054 USA or visit www.sun.com if you need additional information or

       23  * have any questions.

       24  */

       25 

       26 #include "awt.h"

       27 #include "ComCtl32Util.h"

       28 

       29 ComCtl32Util::ComCtl32Util() {

       30 }

       31 

       32 ComCtl32Util::~ComCtl32Util() {

       33 }

       34 

       35 void ComCtl32Util::InitLibraries() {

       36     INITCOMMONCONTROLSEX iccex;

       37     memset(&iccex, 0, sizeof(INITCOMMONCONTROLSEX));

       38     iccex.dwSize = sizeof(INITCOMMONCONTROLSEX);

       39     ::InitCommonControlsEx(&iccex);

       40 }

       41 

       42 WNDPROC ComCtl32Util::SubclassHWND(HWND hwnd, WNDPROC _WindowProc) {

       43     if (IS_WINXP) {

       44         const SUBCLASSPROC p = SharedWindowProc; // let compiler check type of SharedWindowProc

       45         ::SetWindowSubclass(hwnd, p, (UINT_PTR)_WindowProc, NULL); // _WindowProc is used as subclass ID

       46         return NULL;

       47     } else {

       48         return (WNDPROC)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)_WindowProc);

       49     }

       50 }

       51 

       52 void ComCtl32Util::UnsubclassHWND(HWND hwnd, WNDPROC _WindowProc, WNDPROC _DefWindowProc) {

       53     if (IS_WINXP) {

       54         const SUBCLASSPROC p = SharedWindowProc; // let compiler check type of SharedWindowProc

       55         ::RemoveWindowSubclass(hwnd, p, (UINT_PTR)_WindowProc); // _WindowProc is used as subclass ID

       56     } else {

       57         ::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)_DefWindowProc);

       58     }

       59 }

       60 

       61 LRESULT ComCtl32Util::DefWindowProc(WNDPROC _DefWindowProc, HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {

       62     if (IS_WINXP) {

       63         return ::DefSubclassProc(hwnd, msg, wParam, lParam);

       64     } else if (_DefWindowProc != NULL) {

       65         return ::CallWindowProc(_DefWindowProc, hwnd, msg, wParam, lParam);

       66     } else {

       67         return ::DefWindowProc(hwnd, msg, wParam, lParam);

       68     }

       69 }

       70 

       71 LRESULT ComCtl32Util::SharedWindowProc(HWND hwnd, UINT msg,

       72                                        WPARAM wParam, LPARAM lParam,

       73                                        UINT_PTR uIdSubclass, DWORD_PTR dwRefData)

       74 {

       75     TRY;

       76 

       77     WNDPROC _WindowProc = (WNDPROC)uIdSubclass;

       78     return ::CallWindowProc(_WindowProc, hwnd, msg, wParam, lParam);

       79 

       80     CATCH_BAD_ALLOC_RET(0);

       81 }