CMSWindowsScreenSaver.h

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2012 Bolton Software Ltd.
 * Copyright (C) 2002 Chris Schoeneman
 * 
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file COPYING that should have accompanied this file.
 * 
 * This package 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 program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef CMSWINDOWSSCREENSAVER_H
#define CMSWINDOWSSCREENSAVER_H

#include "IScreenSaver.h"
#include "CString.h"
#define WIN32_LEAN_AND_MEAN
#include <windows.h>

class CThread;

class CMSWindowsScreenSaver : public IScreenSaver {
public:
    CMSWindowsScreenSaver();
    virtual ~CMSWindowsScreenSaver();




    bool                checkStarted(UINT msg, WPARAM, LPARAM);


    // IScreenSaver overrides
    virtual void        enable();
    virtual void        disable();
    virtual void        activate();
    virtual void        deactivate();
    virtual bool        isActive() const;

private:
    class CFindScreenSaverInfo {
    public:
        HDESK           m_desktop;
        HWND            m_window;
    };

    static BOOL CALLBACK    findScreenSaverFunc(HWND hwnd, LPARAM lParam);
    static BOOL CALLBACK    killScreenSaverFunc(HWND hwnd, LPARAM lParam);

    DWORD               findScreenSaver();
    void                watchDesktop();
    void                watchProcess(HANDLE process);
    void                unwatchProcess();
    void                watchDesktopThread(void*);
    void                watchProcessThread(void*);

    void                setSecure(bool secure, bool saveSecureAsInt);
    bool                isSecure(bool* wasSecureAnInt) const;

private:
    bool                m_is95Family;
    bool                m_is95;
    bool                m_isNT;
    BOOL                m_wasEnabled;
    bool                m_wasSecure;
    bool                m_wasSecureAnInt;

    HANDLE              m_process;
    CThread*            m_watch;
    DWORD               m_threadID;
    UINT                m_msg;
    WPARAM              m_wParam;
    LPARAM              m_lParam;

    // checkActive state.  true if the screen saver is being watched
    // for deactivation (and is therefore active).
    bool                m_active;
};

#endif