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QtCore.QEventLoop Class Reference

The QEventLoop class provides a means of entering and leaving an event loop. More...

Inheritance diagram for QtCore.QEventLoop:
Collaboration diagram for QtCore.QEventLoop:

Public Types

enum  ProcessEventsFlag {
  AllEvents = 0, DeferredDeletion = 16, DialogExec = 64, EventLoopExec = 32,
  ExcludeSocketNotifiers = 2, ExcludeUserInputEvents = 1, WaitForMoreEvents = 4, X11ExcludeTimers = 8
}
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Public Member Functions

 QEventLoop (QObject parent=null)
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override void CreateProxy ()
 
new int Exec (QEventLoop.ProcessEventsFlag flags=QEventLoop.ProcessEventsFlag.AllEvents)
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new void Exit (int returnCode=0)
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new bool ProcessEvents (QEventLoop.ProcessEventsFlag flags=QEventLoop.ProcessEventsFlag.AllEvents)
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new void ProcessEvents (QEventLoop.ProcessEventsFlag flags, int maximumTime)
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new void Quit ()
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new void WakeUp ()
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new void Dispose ()
 
- Public Member Functions inherited from QtCore.QObject
 QObject (QObject parent=null)
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new bool BlockSignals (bool b)
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new bool Connect (QObject sender, string signal, string member, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
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new void DeleteLater ()
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new bool Disconnect (QObject receiver, string member=null)
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new bool Disconnect (string signal=null, QObject receiver=null, string member=null)
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new void DumpObjectInfo ()
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new void DumpObjectTree ()
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virtual bool OnEvent (QEvent e)
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virtual bool EventFilter (QObject watched, QEvent @event)
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new bool Inherits (string classname)
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new void InstallEventFilter (QObject filterObj)
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new void KillTimer (int id)
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new object Property (string name)
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new void RemoveEventFilter (QObject obj)
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new bool SetProperty (string name, object value)
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new void SetUserData (uint id, QObjectUserData data)
 
new int StartTimer (int interval)
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new QObjectUserData UserData (uint id)
 
new void Dispose ()
 
- Public Member Functions inherited from QtCore.Qt
delegate QTextStream FuncQTextStreamQTextStream (QTextStream qTextStream)
 
delegate void ActionQtMsgTypeString (QtMsgType qtMsgType, string @string)
 
delegate QObject FuncQObject ()
 
delegate string FuncStringQByteArray (QByteArray qByteArray)
 
delegate QByteArray FuncQByteArrayString (string @string)
 

Static Public Member Functions

static string Tr (string s, string c=null)
 
static string Tr (string s, string c, int n)
 
static string TrUtf8 (string s, string c=null)
 
static string TrUtf8 (string s, string c, int n)
 
- Static Public Member Functions inherited from QtCore.QObject
static bool Connect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod method, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
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static bool Connect (QObject sender, string signal, QObject receiver, string member, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
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static bool Disconnect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod member)
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static bool Disconnect (QObject sender, string signal, QObject receiver, string member)
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static string Tr (string s, string c=null)
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static string Tr (string s, string c, int n)
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static string TrUtf8 (string s, string c=null)
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static string TrUtf8 (string s, string c, int n)
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- Static Public Member Functions inherited from QtCore.Qt
static QDataStream Write (QDataStream s, object p)
 
static QDataStream Write (QDataStream stream, QSizeF size)
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static QDataStream Write (QDataStream stream, QPoint point)
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static QTextStream Write (QTextStream s, Qt.FuncQTextStreamQTextStream f)
 
static QDataStream Write (QDataStream stream, QLineF line)
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static QDataStream Write (QDataStream stream, QPointF point)
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static QDataStream Write (QDataStream @out, QChar chr)
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static QDataStream Write (QDataStream @out, QByteArray ba)
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static QDataStream Write (QDataStream stream, QEasingCurve easing)
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static QDataStream Write (QDataStream stream, QRectF rectangle)
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static QDataStream Write (QDataStream @out, QDateTime dateTime)
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static QDataStream Write (QDataStream @out, QUrl url)
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static QDataStream Write (QDataStream @out, QTime time)
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static QDataStream Write (QDataStream arg1, QLocale arg2)
 
static QDataStream Write (QDataStream @out, QBitArray ba)
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static QDataStream Write (QDataStream s, QUuid id)
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static QDataStream Write (QDataStream stream, QLine line)
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static QDataStream Write (QDataStream @out, QDate date)
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static QDataStream Write (QDataStream @out, QRegExp regExp)
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static QDataStream Write (QDataStream stream, QRect rectangle)
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static QDataStream Write (QDataStream stream, QSize size)
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static QDataStream Write (QDataStream s, QVariant.Type p)
 
static QDataStream Write (QDataStream arg1, string arg2)
 
static QDataStream Write (QDataStream @out, System.Collections.Generic.List< string > list)
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static QDataStream Read (QDataStream @in, QChar chr)
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static QDataStream Read (QDataStream arg1, QLocale arg2)
 
static QDataStream Read (QDataStream stream, QRect rectangle)
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static QDataStream Read (QDataStream arg1, QEasingCurve arg2)
 
static QDataStream Read (QDataStream @in, QDate date)
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static QDataStream Read (QDataStream @in, QUrl url)
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static QDataStream Read (QDataStream s, QUuid id)
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static QTextStream Read (QTextStream s, Qt.FuncQTextStreamQTextStream f)
 
static QDataStream Read (QDataStream stream, QLineF line)
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static QDataStream Read (QDataStream stream, QRectF rectangle)
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static QDataStream Read (QDataStream stream, QPointF point)
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static QDataStream Read (QDataStream stream, QLine line)
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static QDataStream Read (QDataStream @in, QBitArray ba)
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static QDataStream Read (QDataStream stream, QSize size)
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static QDataStream Read (QDataStream @in, QDateTime dateTime)
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static QDataStream Read (QDataStream @in, QTime time)
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static QDataStream Read (QDataStream stream, QPoint point)
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static QDataStream Read (QDataStream @in, QRegExp regExp)
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static QDataStream Read (QDataStream s, object p)
 
static QDataStream Read (QDataStream @in, QByteArray ba)
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static QDataStream Read (QDataStream stream, QSizeF size)
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static QDataStream Read (QDataStream arg1, string arg2)
 
static QDataStream Read (QDataStream s, QVariant.Type p)
 
static QDataStream Read (QDataStream @in, System.Collections.Generic.List< string > list)
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static double QAcos (double v)
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static void QAddPostRoutine (System.Action ptr)
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static double QAsin (double v)
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static double QAtan (double v)
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static double QAtan2 (double x, double y)
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static void QBadAlloc ()
 
static int QCeil (double v)
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static ushort QChecksum (string s, uint len)
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static QByteArray QCompress (QByteArray data, int compressionLevel=-1)
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static QByteArray QCompress (Pointer< byte > data, int nbytes, int compressionLevel=-1)
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static double QCos (double v)
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static double QExp (double v)
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static double QFabs (double v)
 
static double QFastCos (double x)
 
static double QFastSin (double x)
 
static string QFlagLocation (string method)
 
static int QFloor (double v)
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static bool QFuzzyCompare (double p1, double p2)
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static bool QFuzzyCompare (float p1, float p2)
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static bool QFuzzyIsNull (double d)
 
static bool QFuzzyIsNull (float f)
 
static uint QHash (QBitArray key)
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static uint QHash (QChar key)
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static uint QHash (QStringRef key)
 
static uint QHash (QUrl url)
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static uint QHash (QPersistentModelIndex index)
 
static uint QHash (QByteArray key)
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static uint QHash (QModelIndex index)
 
static uint QHash (uint key)
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static uint QHash (char key)
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static uint QHash (byte key)
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static uint QHash (short key)
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static uint QHash (NativeLong key)
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static uint QHash (ushort key)
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static uint QHash (long key)
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static uint QHash (ulong key)
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static uint QHash (int key)
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static uint QHash (string key)
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static uint QHash (NativeULong key)
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static Qt.ActionQtMsgTypeString QInstallMsgHandler (Qt.ActionQtMsgTypeString handler)
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static int QIntCast (float f)
 
static int QIntCast (double f)
 
static bool QIsFinite (double d)
 
static bool QIsFinite (float f)
 
static bool QIsInf (float f)
 
static bool QIsInf (double d)
 
static bool QIsNaN (float f)
 
static bool QIsNaN (double d)
 
static bool QIsNull (float f)
 
static bool QIsNull (double d)
 
static double QLn (double v)
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static double QPow (double x, double y)
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static void QRegisterStaticPluginInstanceFunction (Qt.FuncQObject function)
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static void QRemovePostRoutine (System.Action arg1)
 
static int QRound (double d)
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static long QRound64 (double d)
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static double QSin (double v)
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static double QSqrt (double v)
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static bool QStringComparisonHelper (QStringRef s1, string s2)
 
static double QTan (double v)
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static QByteArray QUncompress (QByteArray data)
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static QByteArray QUncompress (Pointer< byte > data, int nbytes)
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static void Qbswap_helper (Pointer< byte > src, Pointer< byte > dest, int size)
 
static QByteArray Qgetenv (string varName)
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static bool Qputenv (string varName, QByteArray value)
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static void Qsrand (uint seed)
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static int Qstrcmp (QByteArray str1, QByteArray str2)
 
static int Qstrcmp (QByteArray str1, string str2)
 
static int Qstrcmp (string str1, QByteArray str2)
 
static int Qstrcmp (string str1, string str2)
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static Pointer< sbyte > Qstrcpy (Pointer< sbyte > dst, string src)
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static Pointer< sbyte > Qstrdup (string src)
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static int Qstricmp (string str1, string str2)
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static uint Qstrlen (string str)
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static int Qstrncmp (string str1, string str2, uint len)
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static Pointer< sbyte > Qstrncpy (Pointer< sbyte > dst, string src, uint len)
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static int Qstrnicmp (string str1, string str2, uint len)
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static uint Qstrnlen (string str, uint maxlen)
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Protected Member Functions

 QEventLoop (System.Type dummy)
 
- Protected Member Functions inherited from QtCore.QObject
 QObject (System.Type dummy)
 
virtual void OnChildEvent (QChildEvent @event)
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virtual void ConnectNotify (string signal)
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virtual void OnCustomEvent (QEvent @event)
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new void OnDestroyed (QObject obj=null)
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virtual void DisconnectNotify (string signal)
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new int Receivers (string signal)
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virtual void OnTimerEvent (QTimerEvent @event)
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Properties

bool IsRunning [get]
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static new QMetaObject StaticMetaObject [get]
 
new IQEventLoopSignals Emit [get]
 
- Properties inherited from QtCore.QObject
virtual EventHandler
< QEventArgs< QChildEvent > > 
ChildEvent
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virtual EventHandler
< QEventArgs< QEvent > > 
CustomEvent
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virtual EventHandler
< QEventArgs< QEvent > > 
Event
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virtual EventHandler
< QEventArgs< QTimerEvent > > 
TimerEvent
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Slot< QObjectDestroyedObj
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Slot Destroyed
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QObject Parent [get, set]
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System.Collections.Generic.List
< QObject
Children [get]
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System.Collections.Generic.List
< QByteArray
DynamicPropertyNames [get]
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bool IsWidgetType [get]
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static uint RegisterUserData [get]
 
QObject Sender [get]
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int SenderSignalIndex [get]
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bool SignalsBlocked [get]
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virtual System.IntPtr SmokeObject [get, set]
 
new string ObjectName [get, set]
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static new QMetaObject StaticMetaObject [get]
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static new QMetaObject StaticQtMetaObject [get]
 
new IQObjectSignals Emit [get]
 
- Properties inherited from QtCore.Qt
static string QAppName [get]
 
static double QInf [get]
 
static double QQNaN [get]
 
static double QSNaN [get]
 
static bool QSharedBuild [get]
 
static string QVersion [get]
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static int Qrand [get]
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Additional Inherited Members

- Static Public Attributes inherited from QtCore.Qt
</para > *< para > Creating QM
files suitable for use with
this[SmokeMethod("qtTrId(const
char*, int)")] static strin 
QtTrId )(string id, int n=-1)
 
- Protected Attributes inherited from QtCore.QObject
object Q_EMIT = null
 
SmokeInvocation interceptor
 
readonly List< QEventHandler > eventFilters = new List<QEventHandler>()
 

Detailed Description

The QEventLoop class provides a means of entering and leaving an event loop.

At any time, you can create a QEventLoop object and call exec() on it to start a local event loop. From within the event loop, calling exit() will force exec() to return.

See also QAbstractEventDispatcher.

Member Enumeration Documentation

This enum controls the types of events processed by the processEvents() functions.

See also processEvents().

Enumerator
AllEvents 

All events. Note that DeferredDelete events are processed specially. See QObject::deleteLater() for more details.

DeferredDeletion 

Deprecated - do not use.

DialogExec 
EventLoopExec 
ExcludeSocketNotifiers 

Do not process socket notifier events. Note that the events are not discarded; they will be delivered the next time processEvents() is called without the ExcludeSocketNotifiers flag.

ExcludeUserInputEvents 

Do not process user input events, such as ButtonPress and KeyPress. Note that the events are not discarded; they will be delivered the next time processEvents() is called without the ExcludeUserInputEvents flag.

WaitForMoreEvents 

Wait for events if no pending events are available.

X11ExcludeTimers 

Constructor & Destructor Documentation

QtCore.QEventLoop.QEventLoop ( System.Type  dummy)
protected
QtCore.QEventLoop.QEventLoop ( QObject  parent = null)

Constructs an event loop object with the given parent.

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Member Function Documentation

override void QtCore.QEventLoop.CreateProxy ( )
virtual

Reimplemented from QtCore.QObject.

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new void QtCore.QEventLoop.Dispose ( )
new int QtCore.QEventLoop.Exec ( QEventLoop.ProcessEventsFlag  flags = QEventLoop.ProcessEventsFlag.AllEvents)

Enters the main event loop and waits until exit() is called. Returns the value that was passed to exit().

If flags are specified, only events of the types allowed by the flags will be processed.

It is necessary to call this function to start event handling. The main event loop receives events from the window system and dispatches these to the application widgets.

Generally speaking, no user interaction can take place before calling exec(). As a special case, modal widgets like QMessageBox can be used before calling exec(), because modal widgets use their own local event loop.

To make your application perform idle processing (i.e. executing a special function whenever there are no pending events), use a QTimer with 0 timeout. More sophisticated idle processing schemes can be achieved using processEvents().

See also QApplication::quit(), exit(), and processEvents().

new void QtCore.QEventLoop.Exit ( int  returnCode = 0)

Tells the event loop to exit with a return code.

After this function has been called, the event loop returns from the call to exec(). The exec() function returns returnCode.

By convention, a returnCode of 0 means success, and any non-zero value indicates an error.

Note that unlike the C library function of the same name, this function does return to the caller – it is event processing that stops.

See also QCoreApplication::quit(), quit(), and exec().

new bool QtCore.QEventLoop.ProcessEvents ( QEventLoop.ProcessEventsFlag  flags = QEventLoop.ProcessEventsFlag.AllEvents)

Processes pending events that match flags until there are no more events to process. Returns true if pending events were handled; otherwise returns false.

This function is especially useful if you have a long running operation and want to show its progress without allowing user input; i.e. by using the ExcludeUserInputEvents flag.

This function is simply a wrapper for QAbstractEventDispatcher::processEvents(). See the documentation for that function for details.

new void QtCore.QEventLoop.ProcessEvents ( QEventLoop.ProcessEventsFlag  flags,
int  maximumTime 
)

Process pending events that match flags for a maximum of maxTime milliseconds, or until there are no more events to process, whichever is shorter. This function is especially useful if you have a long running operation and want to show its progress without allowing user input, i.e. by using the ExcludeUserInputEvents flag.

Notes:

This function does not process events continuously; it returns after all available events are processed.

Specifying the WaitForMoreEvents flag makes no sense and will be ignored.

new void QtCore.QEventLoop.Quit ( )

Tells the event loop to exit normally.

Same as exit(0).

See also QCoreApplication::quit() and exit().

static string QtCore.QEventLoop.Tr ( string  s,
string  c = null 
)
static
static string QtCore.QEventLoop.Tr ( string  s,
string  c,
int  n 
)
static
static string QtCore.QEventLoop.TrUtf8 ( string  s,
string  c = null 
)
static
static string QtCore.QEventLoop.TrUtf8 ( string  s,
string  c,
int  n 
)
static
new void QtCore.QEventLoop.WakeUp ( )

Wakes up the event loop.

See also QAbstractEventDispatcher::wakeUp().

Property Documentation

new IQEventLoopSignals QtCore.QEventLoop.Emit
getprotected
bool QtCore.QEventLoop.IsRunning
get

Returns true if the event loop is running; otherwise returns false. The event loop is considered running from the time when exec() is called until exit() is called.

See also exec() and exit().

new QMetaObject QtCore.QEventLoop.StaticMetaObject
staticget