mirror of
https://github.com/TigerVNC/tigervnc.git
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47ed8d321c
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
/* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// -=- WMCursor.cxx
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// *** DOESN'T SEEM TO WORK WITH GetCursorInfo POS CODE BUILT-IN UNDER NT4SP6
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// *** INSTEAD, WE LOOK FOR Win2000/Win98 OR ABOVE
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#define WINVER 0x0500
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#include <rfb_win32/WMCursor.h>
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#include <rfb_win32/OSVersion.h>
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#include <rfb_win32/Win32Util.h>
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#include <rfb/Exception.h>
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#include <rfb/LogWriter.h>
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using namespace rdr;
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using namespace rfb;
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using namespace rfb::win32;
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static LogWriter vlog("WMCursor");
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typedef BOOL (WINAPI *_GetCursorInfo_proto)(PCURSORINFO pci);
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DynamicFn<_GetCursorInfo_proto> _GetCursorInfo(_T("user32.dll"), "GetCursorInfo");
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WMCursor::WMCursor() : hooks(0), library(0), use_getCursorInfo(false), cursor(0) {
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#if (WINVER >= 0x0500)
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// Check the OS version
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bool is_win98 = (osVersion.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) &&
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(osVersion.dwMajorVersion > 4) || ((osVersion.dwMajorVersion == 4) && (osVersion.dwMinorVersion > 0));
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bool is_win2K = (osVersion.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osVersion.dwMajorVersion >= 5);
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// Use GetCursorInfo if OS version is sufficient
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use_getCursorInfo = (is_win98 || is_win2K) && _GetCursorInfo.isValid();
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#else
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#pragma message ("not building in GetCursorInfo support")
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#endif
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if (!use_getCursorInfo) {
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hooks = new WMCursorHooks();
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if (hooks && hooks->start()) {
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vlog.info("falling back to cursor hooking");
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} else {
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delete hooks;
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hooks = 0;
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vlog.error("unable to monitor cursor shape");
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}
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} else {
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vlog.info("using GetCursorInfo");
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}
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cursor = (HCURSOR)LoadImage(0, IDC_ARROW, IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE | LR_SHARED);
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}
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WMCursor::~WMCursor() {
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if (hooks) delete hooks;
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if (library) FreeLibrary(library);
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}
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WMCursor::Info
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WMCursor::getCursorInfo() {
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Info result;
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#if (WINVER >= 0x0500)
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if (use_getCursorInfo) {
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CURSORINFO info;
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info.cbSize = sizeof(CURSORINFO);
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if ((*_GetCursorInfo)(&info)) {
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result.cursor = info.hCursor;
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result.position = Point(info.ptScreenPos.x, info.ptScreenPos.y);
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result.visible = info.flags & CURSOR_SHOWING;
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return result;
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}
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}
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#endif
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// Fall back to the old way of doing things
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POINT pos;
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if (hooks) cursor = hooks->getCursor();
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result.cursor = cursor;
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result.visible = cursor != 0;
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GetCursorPos(&pos);
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result.position.x = pos.x;
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result.position.y = pos.y;
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return result;
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}
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