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# qapplication.h

This is the verbatim text of the qapplication.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/qapplication.h   3.3.3   edited Jan 20 2004 $
    **
    ** Definition of QApplication class
    **
    ** Created : 931107
    **
    ** Copyright (C) 1992-2002 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QAPPLICATION_H
    #define QAPPLICATION_H

    #ifndef QT_H
    #include "qdesktopwidget.h"
    #include "qasciidict.h"
    #include "qpalette.h"
    #include "qtranslator.h"
    #include "qstrlist.h"
    #include "qstringlist.h"
    #endif // QT_H

    class QSessionManager;
    class QStyle;
    class QTranslator;
    class QEventLoop;
    #if defined(Q_WS_QWS)
    class QWSDecoration;
    #endif

    #ifdef QT_THREAD_SUPPORT
    class QMutex;
    #endif // QT_THREAD_SUPPORT

    class QApplication;
    extern Q_EXPORT QApplication *qApp;		// global application object

    class Q_EXPORT QApplication : public QObject
    {
        Q_OBJECT
    public:
        QApplication( int &argc, char **argv );
        QApplication( int &argc, char **argv, bool GUIenabled );
        enum Type { Tty, GuiClient, GuiServer };
        QApplication( int &argc, char **argv, Type );
    #if defined(Q_WS_X11)
        QApplication( Display* dpy, HANDLE visual = 0, HANDLE cmap = 0 );
        QApplication( Display *dpy, int argc, char **argv,
    		  HANDLE visual = 0, HANDLE cmap= 0 );
    #endif
        virtual ~QApplication();

        int		    argc()	const;
        char	  **argv()	const;

        Type type() const;

    #ifndef QT_NO_STYLE
        static QStyle  &style();
        static void	    setStyle( QStyle* );
        static QStyle*  setStyle( const QString& );
    #endif
    #ifndef Q_QDOC
        enum ColorMode { NormalColors, CustomColors };
        static ColorMode colorMode();
        static void      setColorMode( QApplication::ColorMode );
    #endif

        enum ColorSpec { NormalColor=0, CustomColor=1, ManyColor=2 };
        static int	     colorSpec();
        static void      setColorSpec( int );
    #ifndef QT_NO_CURSOR
        static QCursor  *overrideCursor();
        static void	     setOverrideCursor( const QCursor &, bool replace=FALSE );
        static void	     restoreOverrideCursor();
    #endif
        static bool	     hasGlobalMouseTracking();
        static void	     setGlobalMouseTracking( bool enable );
    #ifndef QT_NO_PALETTE
        static QPalette  palette( const QWidget* = 0 );
        static void	     setPalette( const QPalette &, bool informWidgets=FALSE,
    				 const char* className = 0 );
    #endif
        static QFont     font( const QWidget* = 0 );
        static void	     setFont( const QFont &, bool informWidgets=FALSE,
    			      const char* className = 0 );
        static QFontMetrics fontMetrics();

        QWidget	    *mainWidget()  const;
        virtual void     setMainWidget( QWidget * );
        virtual void     polish( QWidget * );

        static QWidgetList *allWidgets();
        static QWidgetList *topLevelWidgets();

        static QDesktopWidget   *desktop();

        static QWidget     *activePopupWidget();
        static QWidget     *activeModalWidget();
    #ifndef QT_NO_CLIPBOARD
        static QClipboard  *clipboard();
    #endif
        QWidget	       *focusWidget() const;
        QWidget	       *activeWindow() const;

        static QWidget  *widgetAt( int x, int y, bool child=FALSE );
        static QWidget  *widgetAt( const QPoint &, bool child=FALSE );

        static QEventLoop *eventLoop();

        int		     exec();
        void	     processEvents();
        void	     processEvents( int maxtime );
        void	     processOneEvent();
        bool	     hasPendingEvents();
        int		     enter_loop();
        void	     exit_loop();
        int		     loopLevel() const;
        static void	     exit( int retcode=0 );

        static bool	     sendEvent( QObject *receiver, QEvent *event );
        static void	     postEvent( QObject *receiver, QEvent *event );
        static void	     sendPostedEvents( QObject *receiver, int event_type );
        static void	     sendPostedEvents();

        static void      removePostedEvents( QObject *receiver );

        virtual bool     notify( QObject *, QEvent * );

        static bool	     startingUp();
        static bool	     closingDown();

        static void	     flushX();
        static void flush();
        static void	     syncX();

        static void	     beep();

    #ifndef QT_NO_TRANSLATION
    # ifndef QT_NO_TEXTCODEC
        void	     setDefaultCodec( QTextCodec * );
        QTextCodec*	     defaultCodec() const;
    # endif
        void	     installTranslator( QTranslator * );
        void	     removeTranslator( QTranslator * );
    #endif
        enum Encoding { DefaultCodec, UnicodeUTF8 };
        QString	     translate( const char * context,
    				const char * key,
    				const char * comment = 0,
    				Encoding encoding = DefaultCodec ) const;
    #ifndef QT_NO_DIR
        QString   applicationDirPath();
        QString   applicationFilePath();
    #endif
    #ifndef QT_NO_PALETTE
        // obsolete functions
        static void      setWinStyleHighlightColor( const QColor &c ) {
    	QPalette p( palette() );
    	p.setColor( QColorGroup::Highlight, c );
    	setPalette( p, TRUE);
        }
        static const QColor &winStyleHighlightColor() {
    	return palette().active().highlight();
        }
    #endif
        static void      setDesktopSettingsAware( bool );
        static bool      desktopSettingsAware();

        static void      setCursorFlashTime( int );
        static int       cursorFlashTime();

        static void      setDoubleClickInterval( int );
        static int       doubleClickInterval();
    #ifndef QT_NO_WHEELEVENT
        static void      setWheelScrollLines( int );
        static int       wheelScrollLines();
    #endif
        static void	     setGlobalStrut( const QSize & );
        static QSize     globalStrut();

    #ifndef QT_NO_COMPONENT
        static void      setLibraryPaths( const QStringList & );
        static QStringList libraryPaths();
        static void      addLibraryPath( const QString & );
        static void      removeLibraryPath( const QString & );
    #endif // QT_NO_COMPONENT
        static void setStartDragTime( int ms );
        static int startDragTime();
        static void setStartDragDistance( int l );
        static int startDragDistance();

        static void setReverseLayout( bool b );
        static bool reverseLayout();

        static int horizontalAlignment( int align );

        static bool	    isEffectEnabled( Qt::UIEffect );
        static void	    setEffectEnabled( Qt::UIEffect, bool enable = TRUE );

    #if defined(Q_WS_MAC)
        virtual bool     macEventFilter( EventHandlerCallRef, EventRef );
    #endif
    #if defined(Q_WS_WIN)
        virtual bool     winEventFilter( MSG * );
    #endif
    #if defined(Q_WS_X11)
        virtual bool     x11EventFilter( XEvent * );
        virtual int	     x11ClientMessage( QWidget*, XEvent*, bool passive_only);
        int              x11ProcessEvent( XEvent* );
    #endif
    #if defined(Q_WS_QWS)
        virtual bool     qwsEventFilter( QWSEvent * );
        int              qwsProcessEvent( QWSEvent* );
        void             qwsSetCustomColors( QRgb *colortable, int start, int numColors );
    #ifndef QT_NO_QWS_MANAGER
        static QWSDecoration &qwsDecoration();
        static void      qwsSetDecoration( QWSDecoration *);
    #endif
    #endif

    #if defined(Q_OS_WIN32) || defined(Q_OS_CYGWIN)
        static WindowsVersion winVersion();
    #elif defined(Q_OS_MAC)
        static MacintoshVersion macVersion();
    #endif
    #if defined(Q_WS_WIN)
        void	     winFocus( QWidget *, bool );
        static void	     winMouseButtonUp();
    #endif

    #ifndef QT_NO_SESSIONMANAGER
        // session management
        bool	     isSessionRestored() const;
        QString 	sessionId() const;
        QString 	sessionKey() const;
        virtual void     commitData( QSessionManager& sm );
        virtual void     saveState( QSessionManager& sm );
    #endif
    #if defined(Q_WS_X11)
        static void create_xim();
        static void close_xim();
        static bool x11_apply_settings();
    #endif
        void	     wakeUpGuiThread();
    #if defined(QT_THREAD_SUPPORT)
        void	     lock();
        void	     unlock(bool wakeUpGui = TRUE);
        bool	     locked();
        bool             tryLock();
    #endif

    signals:
        void	     lastWindowClosed();
        void	     aboutToQuit();
        void	     guiThreadAwake();

    public slots:
        void	     quit();
        void	     closeAllWindows();
        void	     aboutQt();

    #if defined(Q_WS_QWS)
    protected:
        void setArgs(int, char **);
    #endif

    protected:
        bool event(QEvent *);

    private:
        void construct( int &argc, char **argv, Type );
        void initialize( int, char ** );
        void init_precmdline();
        void process_cmdline( int* argcptr, char ** argv );
        bool internalNotify( QObject *, QEvent * );
    #if defined(Q_WS_QWS)
        static QWidget *findChildWidget( const QWidget *p, const QPoint &pos );
        static QWidget *findWidget( const QObjectList&, const QPoint &, bool rec );
    #endif

    #if defined(Q_WS_MAC)
        bool do_mouse_down(Point *, bool *);
        static QMAC_PASCAL OSStatus globalEventProcessor(EventHandlerCallRef,  EventRef, void *);
        static QMAC_PASCAL OSStatus globalAppleEventProcessor(const AppleEvent *, AppleEvent *, long);
        static QMAC_PASCAL void qt_context_timer_callbk(EventLoopTimerRef, void *);
        static QMAC_PASCAL void qt_select_timer_callbk(EventLoopTimerRef, void *);
        static bool qt_mac_apply_settings();
        friend class QMacInputMethod;
        friend QMAC_PASCAL OSStatus qt_window_event(EventHandlerCallRef, EventRef, void *);
        friend void qt_mac_update_os_settings();
        friend bool qt_set_socket_handler( int, int, QObject *, bool);
        friend void qt_mac_destroy_widget(QWidget *);
        friend void qt_init(int *, char **, QApplication::Type);
    #endif

    #ifdef QT_THREAD_SUPPORT
        static QMutex   *qt_mutex;
    #endif // QT_THREAD_SUPPORT

        int		     app_argc;
        char	   **app_argv;
        bool	     quit_now;
        int		     quit_code;
        static QStyle   *app_style;
        static int	     app_cspec;
    #ifndef QT_NO_PALETTE
        static QPalette *app_pal;
    #endif
        static QFont    *app_font;
    #ifndef QT_NO_CURSOR
        static QCursor  *app_cursor;
    #endif
        static QEventLoop* eventloop;
        static int	     app_tracking;
        static bool	     is_app_running;
        static bool	     is_app_closing;
        static bool	     app_exit_loop;
        static int	     loop_level;
        static QWidget  *main_widget;
        static QWidget  *focus_widget;
        static QWidget  *active_window;
        static bool	     obey_desktop_settings;
        static int	     cursor_flash_time;
        static int	     mouse_double_click_time;
        static int	     wheel_scroll_lines;
        static int	     composedUnicode; // Value, meta-composed character

        static bool	     animate_ui;
        static bool	     animate_menu;
        static bool	     animate_tooltip;
        static bool	     animate_combo;
        static bool	     fade_menu;
        static bool	     fade_tooltip;
        static bool	     animate_toolbox;
        static bool	     widgetCount; // Coupled with -widgetcount switch
        static bool	     metaComposeUnicode;

        QValueList<QTranslator*> *translators;
    #ifndef QT_NO_SESSIONMANAGER
        QSessionManager *session_manager;
        QString	     session_id;
        static QString* session_key;
        bool	     is_session_restored;
    #endif
    #if defined(Q_WS_X11) && !defined (QT_NO_STYLE )
        static void x11_initialize_style();
    #endif

        static QSize     app_strut;
    #ifndef QT_NO_COMPONENT
        static QStringList *app_libpaths;
    #endif
        static QAsciiDict<QPalette> *app_palettes;
        static QAsciiDict<QFont>    *app_fonts;

        static QWidgetList *popupWidgets;
        bool	     inPopupMode() const;
        void	     closePopup( QWidget *popup );
        void	     openPopup( QWidget *popup );
        void	     setActiveWindow( QWidget* act );

        static bool      sendSpontaneousEvent( QObject *receiver, QEvent *event );
        static void      removePostedEvent( QEvent * );

        friend class QWidget;
        friend class QETWidget;
        friend class QDialog;
        friend class QAccelManager;
        friend class QEvent;
        friend class QTranslator;
        friend class QEventLoop;
        friend Q_EXPORT void qt_ucm_initialize( QApplication * );
    #if defined(Q_WS_WIN)
        friend bool qt_sendSpontaneousEvent( QObject*, QEvent* );
    #endif
    #if defined(Q_WS_QWS)
        friend class QInputContext;
    #endif
    private: // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QApplication( const QApplication & );
        QApplication &operator=( const QApplication & );
    #endif
    };

    inline int QApplication::argc() const
    {
        return app_argc;
    }

    inline char **QApplication::argv() const
    {
        return app_argv;
    }

    #if defined(Q_WS_QWS)
    inline void QApplication::setArgs(int c, char **v)
    {
            app_argc = c;
    	    app_argv = v;
    }
    #endif

    #ifndef QT_NO_CURSOR
    inline QCursor *QApplication::overrideCursor()
    {
        return app_cursor;
    }
    #endif
    inline bool QApplication::hasGlobalMouseTracking()
    {
        return app_tracking > 0;
    }

    inline QWidget *QApplication::mainWidget() const
    {
        return main_widget;
    }

    inline QWidget *QApplication::focusWidget() const
    {
        return focus_widget;
    }

    inline QWidget *QApplication::activeWindow() const
    {
        return active_window;
    }

    inline QWidget *QApplication::widgetAt( const QPoint &p, bool child )
    {
        return widgetAt( p.x(), p.y(), child );
    }

    inline bool QApplication::inPopupMode() const
    {
        return popupWidgets != 0;
    }
    #ifndef QT_NO_SESSIONMANAGER
    inline bool QApplication::isSessionRestored() const
    {
        return is_session_restored;
    }

    inline QString QApplication::sessionId() const
    {
        return session_id;
    }

    inline QString QApplication::sessionKey() const
    {
        return session_key ? *session_key : QString::null;
    }
    #endif
    inline QSize QApplication::globalStrut()
    {
        return app_strut;
    }

    inline bool QApplication::sendEvent( QObject *receiver, QEvent *event )
    {  if ( event ) event->spont = FALSE; return qApp ? qApp->notify( receiver, event ) : FALSE; }

    inline bool QApplication::sendSpontaneousEvent( QObject *receiver, QEvent *event )
    { if ( event ) event->spont = TRUE; return qApp ? qApp->notify( receiver, event ) : FALSE; }

    #ifdef QT_NO_TRANSLATION
    // Simple versions
    inline QString QApplication::translate( const char *, const char *sourceText,
    					const char *, Encoding encoding ) const
    {
    #ifndef QT_NO_TEXTCODEC
        if ( encoding == UnicodeUTF8 )
    	return QString::fromUtf8( sourceText );
        else
    #endif
    	return QString::fromLatin1( sourceText );
    }
    #endif

    inline int QApplication::horizontalAlignment( int align )
    {
        align &= AlignHorizontal_Mask;
        if ( align == AlignAuto ) {
    	if ( reverseLayout() )
    	    align = AlignRight;
    	else
    	    align = AlignLeft;
        }
        return align;
    }

    #endif // QAPPLICATION_H