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- /* Copyright (C) 2002-2004 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.
- */
-
- // -=- CleanDesktop.cxx
-
- #define WIN32_LEAN_AND_MEAN
- #include <windows.h>
- #include <wininet.h>
- #include <shlobj.h>
-
- #include <rfb_win32/CleanDesktop.h>
- #include <rfb_win32/CurrentUser.h>
- #include <rfb_win32/Registry.h>
- #include <rfb/LogWriter.h>
- #include <rdr/Exception.h>
-
- using namespace rfb;
- using namespace rfb::win32;
-
- static LogWriter vlog("CleanDesktop");
-
-
- struct ActiveDesktop {
- ActiveDesktop() : handle(0) {
- // - Contact Active Desktop
- HRESULT result = CoCreateInstance(CLSID_ActiveDesktop, NULL, CLSCTX_INPROC_SERVER,
- IID_IActiveDesktop, (PVOID*)&handle);
- if (result != S_OK)
- throw rdr::SystemException("failed to contact Active Desktop", result);
- }
- ~ActiveDesktop() {
- if (handle)
- handle->Release();
- }
- bool enable(bool enable_) {
- // - Get the current Active Desktop options
- COMPONENTSOPT adOptions;
- memset(&adOptions, 0, sizeof(adOptions));
- adOptions.dwSize = sizeof(adOptions);
-
- HRESULT result = handle->GetDesktopItemOptions(&adOptions, 0);
- if (result != S_OK) {
- vlog.error("failed to get Active Desktop options: %d", result);
- return false;
- }
-
- // - If Active Desktop is active, disable it
- if ((adOptions.fActiveDesktop==0) != (enable_==0)) {
- if (enable_)
- vlog.debug("enabling Active Desktop");
- else
- vlog.debug("disabling Active Desktop");
-
- adOptions.fActiveDesktop = enable_;
- result = handle->SetDesktopItemOptions(&adOptions, 0);
- if (result != S_OK) {
- vlog.error("failed to disable ActiveDesktop: %d", result);
- return false;
- }
- handle->ApplyChanges(AD_APPLY_REFRESH);
- return true;
- }
- return false;
- }
- IActiveDesktop* handle;
- };
-
-
- DWORD SysParamsInfo(UINT action, UINT param, PVOID ptr, UINT ini) {
- DWORD r = ERROR_SUCCESS;
- if (!SystemParametersInfo(action, param, ptr, ini)) {
- r = GetLastError();
- vlog.info("SPI error: %d", r);
- }
- return r;
- }
-
-
- CleanDesktop::CleanDesktop() : restoreActiveDesktop(false), restoreWallpaper(false), restoreEffects(false) {
- CoInitialize(0);
- }
-
- CleanDesktop::~CleanDesktop() {
- enableEffects();
- enablePattern();
- enableWallpaper();
- CoUninitialize();
- }
-
- void CleanDesktop::disableWallpaper() {
- try {
- ImpersonateCurrentUser icu;
-
- vlog.debug("disable desktop wallpaper/Active Desktop");
-
- // -=- First attempt to remove the wallpaper using Active Desktop
- try {
- ActiveDesktop ad;
- if (ad.enable(false))
- restoreActiveDesktop = true;
- } catch (rdr::Exception& e) {
- vlog.error(e.str());
- }
-
- // -=- Switch of normal wallpaper and notify apps
- SysParamsInfo(SPI_SETDESKWALLPAPER, 0, "", SPIF_SENDCHANGE);
- restoreWallpaper = true;
-
- } catch (rdr::Exception& e) {
- vlog.info(e.str());
- }
- }
-
- void CleanDesktop::enableWallpaper() {
- try {
- ImpersonateCurrentUser icu;
-
- if (restoreActiveDesktop) {
- vlog.debug("restore Active Desktop");
-
- // -=- First attempt to re-enable Active Desktop
- try {
- ActiveDesktop ad;
- ad.enable(true);
- restoreActiveDesktop = false;
- } catch (rdr::Exception& e) {
- vlog.error(e.str());
- }
- }
-
- if (restoreWallpaper) {
- vlog.debug("restore desktop wallpaper");
-
- // -=- Then restore the standard wallpaper if required
- SysParamsInfo(SPI_SETDESKWALLPAPER, 0, NULL, SPIF_SENDCHANGE);
- restoreWallpaper = false;
- }
-
- } catch (rdr::Exception& e) {
- vlog.info(e.str());
- }
- }
-
-
- void CleanDesktop::disablePattern() {
- try {
- ImpersonateCurrentUser icu;
-
- vlog.debug("disable desktop pattern");
- SysParamsInfo(SPI_SETDESKPATTERN, 0, "", SPIF_SENDCHANGE);
- restorePattern = true;
-
- } catch (rdr::Exception& e) {
- vlog.info(e.str());
- }
- }
-
- void CleanDesktop::enablePattern() {
- try {
- if (restorePattern) {
- ImpersonateCurrentUser icu;
-
- vlog.debug("restoring pattern...");
-
- TCharArray pattern;
- if (osVersion.isPlatformWindows) {
- RegKey cfgKey;
- cfgKey.openKey(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"));
- pattern.buf = cfgKey.getString(_T("Pattern"));
- }
- SysParamsInfo(SPI_SETDESKPATTERN, 0, pattern.buf, SPIF_SENDCHANGE);
- restorePattern = false;
- }
-
- } catch (rdr::Exception& e) {
- vlog.info(e.str());
- }
- }
-
-
- void CleanDesktop::disableEffects() {
- #if (WINVER >= 0x500)
- try {
- ImpersonateCurrentUser icu;
-
- vlog.debug("disable desktop effects");
-
- SysParamsInfo(SPI_SETFONTSMOOTHING, FALSE, 0, SPIF_SENDCHANGE);
- if (SysParamsInfo(SPI_GETUIEFFECTS, 0, &uiEffects, 0) == ERROR_CALL_NOT_IMPLEMENTED) {
- SysParamsInfo(SPI_GETCOMBOBOXANIMATION, 0, &comboBoxAnim, 0);
- SysParamsInfo(SPI_GETGRADIENTCAPTIONS, 0, &gradientCaptions, 0);
- SysParamsInfo(SPI_GETHOTTRACKING, 0, &hotTracking, 0);
- SysParamsInfo(SPI_GETLISTBOXSMOOTHSCROLLING, 0, &listBoxSmoothScroll, 0);
- SysParamsInfo(SPI_GETMENUANIMATION, 0, &menuAnim, 0);
- SysParamsInfo(SPI_SETCOMBOBOXANIMATION, 0, FALSE, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETGRADIENTCAPTIONS, 0, FALSE, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETHOTTRACKING, 0, FALSE, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETLISTBOXSMOOTHSCROLLING, 0, FALSE, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETMENUANIMATION, 0, FALSE, SPIF_SENDCHANGE);
- } else {
- SysParamsInfo(SPI_SETUIEFFECTS, 0, FALSE, SPIF_SENDCHANGE);
- }
- restoreEffects = true;
-
- } catch (rdr::Exception& e) {
- vlog.info(e.str());
- }
- #else
- vlog.info("disableffects not implemented");
- #endif
- }
-
- void CleanDesktop::enableEffects() {
- try {
- if (restoreEffects) {
- #if (WINVER >= 0x500)
- ImpersonateCurrentUser icu;
-
- vlog.debug("restore desktop effects");
-
- RegKey desktopCfg;
- desktopCfg.openKey(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"));
- SysParamsInfo(SPI_SETFONTSMOOTHING, desktopCfg.getInt(_T("FontSmoothing"), 0) != 0, 0, SPIF_SENDCHANGE);
- if (SysParamsInfo(SPI_SETUIEFFECTS, 0, (void*)uiEffects, SPIF_SENDCHANGE) == ERROR_CALL_NOT_IMPLEMENTED) {
- SysParamsInfo(SPI_SETCOMBOBOXANIMATION, 0, (void*)comboBoxAnim, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETGRADIENTCAPTIONS, 0, (void*)gradientCaptions, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETHOTTRACKING, 0, (void*)hotTracking, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETLISTBOXSMOOTHSCROLLING, 0, (void*)listBoxSmoothScroll, SPIF_SENDCHANGE);
- SysParamsInfo(SPI_SETMENUANIMATION, 0, (void*)menuAnim, SPIF_SENDCHANGE);
- }
- restoreEffects = false;
- #else
- vlog.info("enableEffects not implemented");
- #endif
- }
-
- } catch (rdr::Exception& e) {
- vlog.info(e.str());
- }
- }
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