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- /* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software 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 for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- // -=- WMCursor.cxx
-
- // *** DOESN'T SEEM TO WORK WITH GetCursorInfo POS CODE BUILT-IN UNDER NT4SP6
- // *** INSTEAD, WE LOOK FOR Win2000/Win98 OR ABOVE
- #define WINVER 0x0500
-
- #include <rfb_win32/WMCursor.h>
- #include <rfb_win32/OSVersion.h>
- #include <rfb_win32/Win32Util.h>
- #include <rfb/Exception.h>
- #include <rfb/LogWriter.h>
-
- using namespace rdr;
- using namespace rfb;
- using namespace rfb::win32;
-
- static LogWriter vlog("WMCursor");
-
-
- typedef BOOL (WINAPI *_GetCursorInfo_proto)(PCURSORINFO pci);
- DynamicFn<_GetCursorInfo_proto> _GetCursorInfo(_T("user32.dll"), "GetCursorInfo");
-
-
- WMCursor::WMCursor() : hooks(0), library(0), use_getCursorInfo(false), cursor(0) {
- #if (WINVER >= 0x0500)
- // Check the OS version
- bool is_win98 = (osVersion.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) &&
- (osVersion.dwMajorVersion > 4) || ((osVersion.dwMajorVersion == 4) && (osVersion.dwMinorVersion > 0));
- bool is_win2K = (osVersion.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osVersion.dwMajorVersion >= 5);
-
- // Use GetCursorInfo if OS version is sufficient
- use_getCursorInfo = (is_win98 || is_win2K) && _GetCursorInfo.isValid();
- #else
- #pragma message ("not building in GetCursorInfo support")
- #endif
- if (!use_getCursorInfo) {
- hooks = new WMCursorHooks();
- if (hooks && hooks->start()) {
- vlog.info("falling back to cursor hooking");
- } else {
- delete hooks;
- hooks = 0;
- vlog.error("unable to monitor cursor shape");
- }
- } else {
- vlog.info("using GetCursorInfo");
- }
- cursor = (HCURSOR)LoadImage(0, IDC_ARROW, IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE | LR_SHARED);
- }
-
- WMCursor::~WMCursor() {
- if (hooks) delete hooks;
- if (library) FreeLibrary(library);
- }
-
- WMCursor::Info
- WMCursor::getCursorInfo() {
- Info result;
- #if (WINVER >= 0x0500)
- if (use_getCursorInfo) {
- CURSORINFO info;
- info.cbSize = sizeof(CURSORINFO);
- if ((*_GetCursorInfo)(&info)) {
- result.cursor = info.hCursor;
- result.position = Point(info.ptScreenPos.x, info.ptScreenPos.y);
- result.visible = info.flags & CURSOR_SHOWING;
- return result;
- }
- }
- #endif
- // Fall back to the old way of doing things
- POINT pos;
- if (hooks) cursor = hooks->getCursor();
- result.cursor = cursor;
- result.visible = cursor != 0;
- GetCursorPos(&pos);
- result.position.x = pos.x;
- result.position.y = pos.y;
- return result;
- }
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