Eneboo - Documentación para desarrolladores
src/qt/include/qeventloop.h
Ir a la documentación de este archivo.
00001 /****************************************************************************
00002 ** $Id: qt/qeventloop.h   3.3.8   edited Jan 11 14:38 $
00003 **
00004 ** Declaration of QEventLoop class
00005 **
00006 ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
00007 **
00008 ** This file is part of the kernel module of the Qt GUI Toolkit.
00009 **
00010 ** This file may be distributed under the terms of the Q Public License
00011 ** as defined by Trolltech ASA of Norway and appearing in the file
00012 ** LICENSE.QPL included in the packaging of this file.
00013 **
00014 ** This file may be distributed and/or modified under the terms of the
00015 ** GNU General Public License version 2 as published by the Free Software
00016 ** Foundation and appearing in the file LICENSE.GPL included in the
00017 ** packaging of this file.
00018 **
00019 ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
00020 ** licenses may use this file in accordance with the Qt Commercial License
00021 ** Agreement provided with the Software.
00022 **
00023 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00024 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00025 **
00026 ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
00027 **   information about Qt Commercial License Agreements.
00028 ** See http://www.trolltech.com/qpl/ for QPL licensing information.
00029 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
00030 **
00031 ** Contact info@trolltech.com if any conditions of this licensing are
00032 ** not clear to you.
00033 **
00034 **********************************************************************/
00035 
00036 #ifndef QEVENTLOOP_H
00037 #define QEVENTLOOP_H
00038 
00039 #ifndef QT_H
00040 #include "qobject.h"
00041 #include "qsocketnotifier.h"
00042 #endif // QT_H
00043 
00044 class QEventLoopPrivate;
00045 class QSocketNotifier;
00046 class QTimer;
00047 #ifdef Q_WS_MAC
00048 struct timeval; //stdc struct
00049 struct TimerInfo; //internal structure (qeventloop_mac.cpp)
00050 #endif
00051 
00052 #if defined(QT_THREAD_SUPPORT)
00053 class QMutex;
00054 #endif // QT_THREAD_SUPPORT
00055 
00056 
00057 class Q_EXPORT QEventLoop : public QObject
00058 {
00059     Q_OBJECT
00060 
00061 public:
00062     QEventLoop( QObject *parent = 0, const char *name = 0 );
00063     ~QEventLoop();
00064 
00065     enum ProcessEvents {
00066         AllEvents               = 0x00,
00067         ExcludeUserInput        = 0x01,
00068         ExcludeSocketNotifiers  = 0x02,
00069         WaitForMore             = 0x04,
00070         EventLoopExec = 0x20
00071     };
00072     typedef uint ProcessEventsFlags;
00073 
00074     void processEvents( ProcessEventsFlags flags, int maxtime );
00075     virtual bool processEvents( ProcessEventsFlags flags );
00076 
00077     virtual bool hasPendingEvents() const;
00078 
00079     virtual void registerSocketNotifier( QSocketNotifier * );
00080     virtual void unregisterSocketNotifier( QSocketNotifier * );
00081     void setSocketNotifierPending( QSocketNotifier * );
00082     int activateSocketNotifiers();
00083 
00084     int activateTimers();
00085     int timeToWait() const;
00086 
00087     virtual int exec();
00088     virtual void exit( int retcode = 0 );
00089 
00090     virtual int enterLoop();
00091     virtual void exitLoop();
00092     virtual int loopLevel() const;
00093 
00094     virtual void wakeUp();
00095 
00096 signals:
00097     void awake();
00098     void aboutToBlock();
00099 
00100 private:
00101 #if defined(Q_WS_MAC)
00102     friend QMAC_PASCAL void qt_mac_select_timer_callbk(EventLoopTimerRef, void *);
00103     int macHandleSelect(timeval *);
00104     void macHandleTimer(TimerInfo *);
00105 #endif // Q_WS_MAC
00106 
00107     // internal initialization/cleanup - implemented in various platform specific files
00108     void init();
00109     void cleanup();
00110     virtual void appStartingUp();
00111     virtual void appClosingDown();
00112 
00113     // data for the default implementation - other implementations should not
00114     // use/need this data
00115     QEventLoopPrivate *d;
00116 
00117     friend class QApplication;
00118 };
00119 
00120 #endif // QEVENTLOOP_H
 Todo Clases Namespaces Archivos Funciones Variables 'typedefs' Enumeraciones Valores de enumeraciones Propiedades Amigas 'defines'