QtBase  v6.3.1
qeventloop.h
Go to the documentation of this file.
1 /****************************************************************************
2 **
3 ** Copyright (C) 2016 The Qt Company Ltd.
4 ** Contact: https://www.qt.io/licensing/
5 **
6 ** This file is part of the QtCore module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see https://www.qt.io/terms-conditions. For further
15 ** information use the contact form at https://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 3 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 3 requirements
23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24 **
25 ** GNU General Public License Usage
26 ** Alternatively, this file may be used under the terms of the GNU
27 ** General Public License version 2.0 or (at your option) the GNU General
28 ** Public license version 3 or any later version approved by the KDE Free
29 ** Qt Foundation. The licenses are as published by the Free Software
30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31 ** included in the packaging of this file. Please review the following
32 ** information to ensure the GNU General Public License requirements will
33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34 ** https://www.gnu.org/licenses/gpl-3.0.html.
35 **
36 ** $QT_END_LICENSE$
37 **
38 ****************************************************************************/
39 
40 #ifndef QEVENTLOOP_H
41 #define QEVENTLOOP_H
42 
43 #include <QtCore/qobject.h>
44 
46 
47 class QEventLoopPrivate;
48 
49 class Q_CORE_EXPORT QEventLoop : public QObject
50 {
51  Q_OBJECT
52  Q_DECLARE_PRIVATE(QEventLoop)
53 
54 public:
55  explicit QEventLoop(QObject *parent = nullptr);
56  ~QEventLoop();
57 
59  AllEvents = 0x00,
60  ExcludeUserInputEvents = 0x01,
61  ExcludeSocketNotifiers = 0x02,
62  WaitForMoreEvents = 0x04,
63  X11ExcludeTimers = 0x08,
64  EventLoopExec = 0x20,
65  DialogExec = 0x40,
66  ApplicationExec = 0x80,
67  };
68  Q_DECLARE_FLAGS(ProcessEventsFlags, ProcessEventsFlag)
69  Q_FLAG(ProcessEventsFlags)
70 
71  bool processEvents(ProcessEventsFlags flags = AllEvents);
72  void processEvents(ProcessEventsFlags flags, int maximumTime);
73 
74  int exec(ProcessEventsFlags flags = AllEvents);
75  bool isRunning() const;
76 
77  void wakeUp();
78 
79  bool event(QEvent *event) override;
80 
81 public Q_SLOTS:
82  void exit(int returnCode = 0);
83  void quit();
84 };
85 
86 Q_DECLARE_OPERATORS_FOR_FLAGS(QEventLoop::ProcessEventsFlags)
87 
89 
90 class Q_CORE_EXPORT QEventLoopLocker
91 {
92 public:
94  explicit QEventLoopLocker(QEventLoop *loop);
95  explicit QEventLoopLocker(QThread *thread);
97 
98 private:
101 };
102 
104 
105 #endif // QEVENTLOOP_H
The QEvent class is the base class of all event classes. Event objects contain event parameters.
Definition: qcoreevent.h:58
The QEventLoop class provides a means of entering and leaving an event loop.
Definition: qeventloop.h:50
The QEventLoopLocker class provides a means to quit an event loop when it is no longer needed.
Definition: qeventloop.h:91
The QObject class is the base class of all Qt objects.
Definition: qobject.h:125
virtual bool event(QEvent *event)
Definition: qobject.cpp:1329
QScopedPointer< QObjectData > d_ptr
Definition: qobject.h:436
msgBox exec()
#define Q_DECLARE_FLAGS(Flags, Enum)
Definition: qflags.h:210
#define Q_DECLARE_OPERATORS_FOR_FLAGS(Flags)
Definition: qflags.h:227
#define Q_DISABLE_COPY(Class)
Definition: qglobal.h:515
GLbitfield flags
struct _cl_event * event
Definition: qopenglext.h:2998
#define Q_OBJECT
Definition: qtmetamacros.h:158
#define Q_FLAG(x)
Definition: qtmetamacros.h:105
#define Q_SLOTS
Definition: qtmetamacros.h:80
IUIAutomationTreeWalker __RPC__deref_out_opt IUIAutomationElement ** parent