Qyoto  4.0.6
Qyoto is a C# language binding for Qt
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QtCore.QPluginLoader Class Reference

The QPluginLoader class loads a plugin at run-time. More...

Inheritance diagram for QtCore.QPluginLoader:
Collaboration diagram for QtCore.QPluginLoader:

Public Member Functions

 QPluginLoader (QObject parent=null)
 
 
 QPluginLoader (string fileName, QObject parent=null)
 
 
override void CreateProxy ()
 
new bool Unload ()
 
 
new void Dispose ()
 
- Public Member Functions inherited from QtCore.QObject
 QObject (QObject parent=null)
 
 
new bool BlockSignals (bool b)
 
 
new bool Connect (QObject sender, string signal, string member, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
 
 
new void DeleteLater ()
 
 
new bool Disconnect (QObject receiver, string member=null)
 
 
new bool Disconnect (string signal=null, QObject receiver=null, string member=null)
 
 
new void DumpObjectInfo ()
 
 
new void DumpObjectTree ()
 
 
virtual bool OnEvent (QEvent e)
 
 
virtual bool EventFilter (QObject watched, QEvent @event)
 
 
new bool Inherits (string classname)
 
 
new void InstallEventFilter (QObject filterObj)
 
 
new void KillTimer (int id)
 
 
new object Property (string name)
 
 
new void RemoveEventFilter (QObject obj)
 
 
new bool SetProperty (string name, object value)
 
 
new void SetUserData (uint id, QObjectUserData data)
 
new int StartTimer (int interval)
 
 
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)
 
 
static bool Connect (QObject sender, string signal, QObject receiver, string member, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
 
 
static bool Disconnect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod member)
 
 
static bool Disconnect (QObject sender, string signal, QObject receiver, string member)
 
 
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.Qt
static QDataStream Write (QDataStream s, object p)
 
static QDataStream Write (QDataStream stream, QSizeF size)
 
 
static QDataStream Write (QDataStream stream, QPoint point)
 
 
static QTextStream Write (QTextStream s, Qt.FuncQTextStreamQTextStream f)
 
static QDataStream Write (QDataStream stream, QLineF line)
 
 
static QDataStream Write (QDataStream stream, QPointF point)
 
 
static QDataStream Write (QDataStream @out, QChar chr)
 
 
static QDataStream Write (QDataStream @out, QByteArray ba)
 
 
static QDataStream Write (QDataStream stream, QEasingCurve easing)
 
 
static QDataStream Write (QDataStream stream, QRectF rectangle)
 
 
static QDataStream Write (QDataStream @out, QDateTime dateTime)
 
 
static QDataStream Write (QDataStream @out, QUrl url)
 
 
static QDataStream Write (QDataStream @out, QTime time)
 
 
static QDataStream Write (QDataStream arg1, QLocale arg2)
 
static QDataStream Write (QDataStream @out, QBitArray ba)
 
 
static QDataStream Write (QDataStream s, QUuid id)
 
 
static QDataStream Write (QDataStream stream, QLine line)
 
 
static QDataStream Write (QDataStream @out, QDate date)
 
 
static QDataStream Write (QDataStream @out, QRegExp regExp)
 
 
static QDataStream Write (QDataStream stream, QRect rectangle)
 
 
static QDataStream Write (QDataStream stream, QSize size)
 
 
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)
 
 
static QDataStream Read (QDataStream @in, QChar chr)
 
 
static QDataStream Read (QDataStream arg1, QLocale arg2)
 
static QDataStream Read (QDataStream stream, QRect rectangle)
 
 
static QDataStream Read (QDataStream arg1, QEasingCurve arg2)
 
static QDataStream Read (QDataStream @in, QDate date)
 
 
static QDataStream Read (QDataStream @in, QUrl url)
 
 
static QDataStream Read (QDataStream s, QUuid id)
 
 
static QTextStream Read (QTextStream s, Qt.FuncQTextStreamQTextStream f)
 
static QDataStream Read (QDataStream stream, QLineF line)
 
 
static QDataStream Read (QDataStream stream, QRectF rectangle)
 
 
static QDataStream Read (QDataStream stream, QPointF point)
 
 
static QDataStream Read (QDataStream stream, QLine line)
 
 
static QDataStream Read (QDataStream @in, QBitArray ba)
 
 
static QDataStream Read (QDataStream stream, QSize size)
 
 
static QDataStream Read (QDataStream @in, QDateTime dateTime)
 
 
static QDataStream Read (QDataStream @in, QTime time)
 
 
static QDataStream Read (QDataStream stream, QPoint point)
 
 
static QDataStream Read (QDataStream @in, QRegExp regExp)
 
 
static QDataStream Read (QDataStream s, object p)
 
static QDataStream Read (QDataStream @in, QByteArray ba)
 
 
static QDataStream Read (QDataStream stream, QSizeF size)
 
 
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)
 
 
static double QAcos (double v)
 
 
static void QAddPostRoutine (System.Action ptr)
 
 
static double QAsin (double v)
 
 
static double QAtan (double v)
 
 
static double QAtan2 (double x, double y)
 
 
static void QBadAlloc ()
 
static int QCeil (double v)
 
 
static ushort QChecksum (string s, uint len)
 
 
static QByteArray QCompress (QByteArray data, int compressionLevel=-1)
 
 
static QByteArray QCompress (Pointer< byte > data, int nbytes, int compressionLevel=-1)
 
 
static double QCos (double v)
 
 
static double QExp (double v)
 
 
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)
 
 
static bool QFuzzyCompare (double p1, double p2)
 
static bool QFuzzyCompare (float p1, float p2)
 
static bool QFuzzyIsNull (double d)
 
static bool QFuzzyIsNull (float f)
 
static uint QHash (QBitArray key)
 
 
static uint QHash (QChar key)
 
 
static uint QHash (QStringRef key)
 
static uint QHash (QUrl url)
 
 
static uint QHash (QPersistentModelIndex index)
 
static uint QHash (QByteArray key)
 
 
static uint QHash (QModelIndex index)
 
static uint QHash (uint key)
 
 
static uint QHash (char key)
 
 
static uint QHash (byte key)
 
 
static uint QHash (short key)
 
 
static uint QHash (NativeLong key)
 
 
static uint QHash (ushort key)
 
 
static uint QHash (long key)
 
 
static uint QHash (ulong key)
 
 
static uint QHash (int key)
 
 
static uint QHash (string key)
 
 
static uint QHash (NativeULong key)
 
 
static Qt.ActionQtMsgTypeString QInstallMsgHandler (Qt.ActionQtMsgTypeString arg1)
 
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)
 
 
static double QPow (double x, double y)
 
 
static void QRegisterStaticPluginInstanceFunction (Qt.FuncQObject function)
 
 
static void QRemovePostRoutine (System.Action arg1)
 
static int QRound (double d)
 
static long QRound64 (double d)
 
static double QSin (double v)
 
 
static double QSqrt (double v)
 
 
static bool QStringComparisonHelper (QStringRef s1, string s2)
 
static double QTan (double v)
 
 
static QByteArray QUncompress (QByteArray data)
 
 
static QByteArray QUncompress (Pointer< byte > data, int nbytes)
 
 
static void Qbswap_helper (Pointer< byte > src, Pointer< byte > dest, int size)
 
static QByteArray Qgetenv (string varName)
 
static bool Qputenv (string varName, QByteArray value)
 
static void Qsrand (uint seed)
 
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)
 
 
static Pointer< sbyte > Qstrcpy (Pointer< sbyte > dst, string src)
 
 
static Pointer< sbyte > Qstrdup (string src)
 
 
static int Qstricmp (string str1, string str2)
 
 
static uint Qstrlen (string str)
 
 
static int Qstrncmp (string str1, string str2, uint len)
 
 
static Pointer< sbyte > Qstrncpy (Pointer< sbyte > dst, string src, uint len)
 
 
static int Qstrnicmp (string str1, string str2, uint len)
 
 
static uint Qstrnlen (string str, uint maxlen)
 
 
static string QtTrId (string id, int n=-1)
 

Protected Member Functions

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

Properties

string ErrorString [get]
 
 
QObject Instance [get]
 
 
bool IsLoaded [get]
 
 
bool Load [get]
 
 
static
System.Collections.Generic.List
< QObject
StaticInstances [get]
 
 
new string FileName [get, set]
 
 
new QLibrary.LoadHint LoadHints [get, set]
 
 
static new QMetaObject StaticMetaObject [get]
 
new IQPluginLoaderSignals Emit [get]
 
- Properties inherited from QtCore.QObject
virtual EventHandler
< QEventArgs< QChildEvent > > 
ChildEvent
 
 
virtual EventHandler
< QEventArgs< QEvent > > 
CustomEvent
 
 
virtual EventHandler
< QEventArgs< QEvent > > 
Event
 
 
virtual EventHandler
< QEventArgs< QTimerEvent > > 
TimerEvent
 
 
Slot< QObjectDestroyedQObject
 
Slot Destroyed
 
 
QObject Parent [get, set]
 
 
System.Collections.Generic.List
< QObject
Children [get]
 
 
System.Collections.Generic.List
< QByteArray
DynamicPropertyNames [get]
 
 
bool IsWidgetType [get]
 
 
static uint RegisterUserData [get]
 
QObject Sender [get]
 
 
int SenderSignalIndex [get]
 
 
bool SignalsBlocked [get]
 
 
virtual System.IntPtr SmokeObject [get, set]
 
new string ObjectName [get, set]
 
 
static new QMetaObject StaticMetaObject [get]
 
 
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]
 
static int Qrand [get]
 

Additional Inherited Members

- Public Types inherited from QtCore.Qt
enum  AlignmentFlag {
  AlignAbsolute = 16, AlignBottom = 64, AlignCenter = 132, AlignHCenter = 4,
  AlignHorizontal_Mask = 31, AlignJustify = 8, AlignLeading = 1, AlignLeft = 1,
  AlignRight = 2, AlignTop = 32, AlignTrailing = 2, AlignVCenter = 128,
  AlignVertical_Mask = 224
}
  More...
 
enum  AnchorAttribute { AnchorHref = 1, AnchorName = 0 }
  More...
 
enum  AnchorPoint {
  AnchorBottom = 5, AnchorHorizontalCenter = 1, AnchorLeft = 0, AnchorRight = 2,
  AnchorTop = 3, AnchorVerticalCenter = 4
}
  More...
 
enum  ApplicationAttribute {
  AA_AttributeCount = 12, AA_CaptureMultimediaKeys = 11, AA_DontCreateNativeWidgetSiblings = 4, AA_DontShowIconsInMenus = 2,
  AA_DontUseNativeMenuBar = 6, AA_ImmediateWidgetCreation = 0, AA_MSWindowsUseDirect3DByDefault = 1, AA_MacDontSwapCtrlAndMeta = 7,
  AA_MacPluginApplication = 5, AA_NativeWindows = 3, AA_S60DisablePartialScreenInputMode = 9, AA_S60DontConstructApplicationPanes = 8,
  AA_X11InitThreads = 10
}
  More...
 
enum  ArrowType {
  DownArrow = 2, LeftArrow = 3, NoArrow = 0, RightArrow = 4,
  UpArrow = 1
}
 
enum  AspectRatioMode { IgnoreAspectRatio = 0, KeepAspectRatio = 1, KeepAspectRatioByExpanding = 2 }
  More...
 
enum  Axis { XAxis = 0, YAxis = 1, ZAxis = 2 }
  More...
 
enum  BGMode { OpaqueMode = 1, TransparentMode = 0 }
  More...
 
enum  BrushStyle {
  BDiagPattern = 12, ConicalGradientPattern = 17, CrossPattern = 11, Dense1Pattern = 2,
  Dense2Pattern = 3, Dense3Pattern = 4, Dense4Pattern = 5, Dense5Pattern = 6,
  Dense6Pattern = 7, Dense7Pattern = 8, DiagCrossPattern = 14, FDiagPattern = 13,
  HorPattern = 9, LinearGradientPattern = 15, NoBrush = 0, RadialGradientPattern = 16,
  SolidPattern = 1, TexturePattern = 24, VerPattern = 10
}
  More...
 
enum  CaseSensitivity { CaseInsensitive = 0, CaseSensitive = 1 }
 
enum  CheckState { Checked = 2, PartiallyChecked = 1, Unchecked = 0 }
  More...
 
enum  ClipOperation { IntersectClip = 2, NoClip = 0, ReplaceClip = 1, UniteClip = 3 }
 
enum  ConnectionType {
  AutoCompatConnection = 3, AutoConnection = 0, BlockingQueuedConnection = 4, DirectConnection = 1,
  QueuedConnection = 2, UniqueConnection = 128
}
  More...
 
enum  ContextMenuPolicy {
  ActionsContextMenu = 2, CustomContextMenu = 3, DefaultContextMenu = 1, NoContextMenu = 0,
  PreventContextMenu = 4
}
  More...
 
enum  CoordinateSystem { DeviceCoordinates = 0, LogicalCoordinates = 1 }
  More...
 
enum  Corner { BottomLeftCorner = 2, BottomRightCorner = 3, TopLeftCorner = 0, TopRightCorner = 1 }
  More...
 
enum  CursorMoveStyle { LogicalMoveStyle = 0, VisualMoveStyle = 1 }
  More...
 
enum  CursorShape {
  ArrowCursor = 0, BitmapCursor = 24, BlankCursor = 10, BusyCursor = 16,
  ClosedHandCursor = 18, CrossCursor = 2, CustomCursor = 25, DragCopyCursor = 19,
  DragLinkCursor = 21, DragMoveCursor = 20, ForbiddenCursor = 14, IBeamCursor = 4,
  LastCursor = 21, OpenHandCursor = 17, PointingHandCursor = 13, SizeAllCursor = 9,
  SizeBDiagCursor = 7, SizeFDiagCursor = 8, SizeHorCursor = 6, SizeVerCursor = 5,
  SplitHCursor = 12, SplitVCursor = 11, UpArrowCursor = 1, WaitCursor = 3,
  WhatsThisCursor = 15
}
  More...
 
enum  DateFormat {
  DefaultLocaleLongDate = 7, DefaultLocaleShortDate = 6, ISODate = 1, LocalDate = 2,
  LocaleDate = 3, SystemLocaleDate = 2, SystemLocaleLongDate = 5, SystemLocaleShortDate = 4,
  TextDate = 0
}
  More...
 
enum  DayOfWeek {
  Friday = 5, Monday = 1, Saturday = 6, Sunday = 7,
  Thursday = 4, Tuesday = 2, Wednesday = 3
}
 
enum  DockWidgetArea {
  AllDockWidgetAreas = 15, BottomDockWidgetArea = 8, DockWidgetArea_Mask = 15, LeftDockWidgetArea = 1,
  NoDockWidgetArea = 0, RightDockWidgetArea = 2, TopDockWidgetArea = 4
}
 
enum  DockWidgetAreaSizes { NDockWidgetAreas = 4 }
 
enum  DropAction {
  ActionMask = 255, CopyAction = 1, IgnoreAction = 0, LinkAction = 4,
  MoveAction = 2, TargetMoveAction = 32770
}
 
enum  EventPriority { HighEventPriority = 1, LowEventPriority = -1, NormalEventPriority = 0 }
  More...
 
enum  FillRule { OddEvenFill = 0, WindingFill = 1 }
  More...
 
enum  FocusPolicy {
  ClickFocus = 2, NoFocus = 0, StrongFocus = 11, TabFocus = 1,
  WheelFocus = 15
}
  More...
 
enum  FocusReason {
  ActiveWindowFocusReason = 3, BacktabFocusReason = 2, MenuBarFocusReason = 6, MouseFocusReason = 0,
  NoFocusReason = 8, OtherFocusReason = 7, PopupFocusReason = 4, ShortcutFocusReason = 5,
  TabFocusReason = 1
}
  More...
 
enum  GestureFlag { DontStartGestureOnChildren = 1, IgnoredGesturesPropagateToParent = 4, ReceivePartialGestures = 2 }
  More...
 
enum  GestureState {
  GestureCanceled = 4, GestureFinished = 3, GestureStarted = 1, GestureUpdated = 2,
  NoGesture = 0
}
  More...
 
enum  GestureType {
  CustomGesture = 256, LastGestureType = -1, PanGesture = 3, PinchGesture = 4,
  SwipeGesture = 5, TapAndHoldGesture = 2, TapGesture = 1
}
  More...
 
enum  GlobalColor {
  black = 2, blue = 9, color0 = 0, color1 = 1,
  cyan = 10, darkBlue = 15, darkCyan = 16, darkGray = 4,
  darkGreen = 14, darkMagenta = 17, darkRed = 13, darkYellow = 18,
  gray = 5, green = 8, lightGray = 6, magenta = 11,
  red = 7, transparent = 19, white = 3, yellow = 12
}
  More...
 
enum  ImageConversionFlag {
  AlphaDither_Mask = 12, AutoColor = 0, AutoDither = 0, AvoidDither = 128,
  ColorMode_Mask = 3, ColorOnly = 3, DiffuseAlphaDither = 8, DiffuseDither = 0,
  DitherMode_Mask = 192, Dither_Mask = 48, MonoOnly = 2, NoAlpha = 12,
  NoFormatConversion = 512, NoOpaqueDetection = 256, OrderedAlphaDither = 4, OrderedDither = 16,
  PreferDither = 64, ThresholdAlphaDither = 0, ThresholdDither = 32
}
  More...
 
enum  Initialization { Uninitialized = 0 }
 
enum  InputMethodHint {
  ImhDialableCharactersOnly = 1048576, ImhDigitsOnly = 65536, ImhEmailCharactersOnly = 2097152, ImhExclusiveInputMask = -65536,
  ImhFormattedNumbersOnly = 131072, ImhHiddenText = 1, ImhLowercaseOnly = 524288, ImhNoAutoUppercase = 2,
  ImhNoPredictiveText = 32, ImhNone = 0, ImhPreferLowercase = 16, ImhPreferNumbers = 4,
  ImhPreferUppercase = 8, ImhUppercaseOnly = 262144, ImhUrlCharactersOnly = 4194304
}
  More...
 
enum  InputMethodQuery {
  ImAnchorPosition = 6, ImCurrentSelection = 4, ImCursorPosition = 2, ImFont = 1,
  ImMaximumTextLength = 5, ImMicroFocus = 0, ImSurroundingText = 3
}
 
enum  ItemDataRole {
  AccessibleDescriptionRole = 12, AccessibleTextRole = 11, BackgroundColorRole = 8, BackgroundRole = 8,
  CheckStateRole = 10, DecorationPropertyRole = 28, DecorationRole = 1, DisplayPropertyRole = 27,
  DisplayRole = 0, EditRole = 2, FontRole = 6, ForegroundRole = 9,
  InitialSortOrderRole = 14, SizeHintRole = 13, StatusTipPropertyRole = 30, StatusTipRole = 4,
  TextAlignmentRole = 7, TextColorRole = 9, ToolTipPropertyRole = 29, ToolTipRole = 3,
  UserRole = 32, WhatsThisPropertyRole = 31, WhatsThisRole = 5
}
  More...
 
enum  ItemFlag {
  ItemIsDragEnabled = 4, ItemIsDropEnabled = 8, ItemIsEditable = 2, ItemIsEnabled = 32,
  ItemIsSelectable = 1, ItemIsTristate = 64, ItemIsUserCheckable = 16, NoItemFlags = 0
}
  More...
 
enum  ItemSelectionMode { ContainsItemBoundingRect = 2, ContainsItemShape = 0, IntersectsItemBoundingRect = 3, IntersectsItemShape = 1 }
  More...
 
enum  Key {
  Key_0 = 48, Key_1 = 49, Key_2 = 50, Key_3 = 51,
  Key_4 = 52, Key_5 = 53, Key_6 = 54, Key_7 = 55,
  Key_8 = 56, Key_9 = 57, Key_A = 65, Key_AE = 198,
  Key_Aacute = 193, Key_Acircumflex = 194, Key_AddFavorite = 16777408, Key_Adiaeresis = 196,
  Key_Agrave = 192, Key_Alt = 16777251, Key_AltGr = 16781571, Key_Ampersand = 38,
  Key_Any = 32, Key_Apostrophe = 39, Key_ApplicationLeft = 16777415, Key_ApplicationRight = 16777416,
  Key_Aring = 197, Key_AsciiCircum = 94, Key_AsciiTilde = 126, Key_Asterisk = 42,
  Key_At = 64, Key_Atilde = 195, Key_AudioCycleTrack = 16777478, Key_AudioForward = 16777474,
  Key_AudioRandomPlay = 16777476, Key_AudioRepeat = 16777475, Key_AudioRewind = 16777413, Key_Away = 16777464,
  Key_B = 66, Key_Back = 16777313, Key_BackForward = 16777414, Key_Backslash = 92,
  Key_Backspace = 16777219, Key_Backtab = 16777218, Key_Bar = 124, Key_BassBoost = 16777331,
  Key_BassDown = 16777333, Key_BassUp = 16777332, Key_Battery = 16777470, Key_Bluetooth = 16777471,
  Key_Book = 16777417, Key_BraceLeft = 123, Key_BraceRight = 125, Key_BracketLeft = 91,
  Key_BracketRight = 93, Key_BrightnessAdjust = 16777410, Key_C = 67, Key_CD = 16777418,
  Key_Calculator = 16777419, Key_Calendar = 16777444, Key_Call = 17825796, Key_Camera = 17825824,
  Key_CameraFocus = 17825825, Key_Cancel = 16908289, Key_CapsLock = 16777252, Key_Ccedilla = 199,
  Key_Clear = 16777227, Key_ClearGrab = 16777421, Key_Close = 16777422, Key_Codeinput = 16781623,
  Key_Colon = 58, Key_Comma = 44, Key_Community = 16777412, Key_Context1 = 17825792,
  Key_Context2 = 17825793, Key_Context3 = 17825794, Key_Context4 = 17825795, Key_ContrastAdjust = 16777485,
  Key_Control = 16777249, Key_Copy = 16777423, Key_Cut = 16777424, Key_D = 68,
  Key_DOS = 16777426, Key_Dead_Abovedot = 16781910, Key_Dead_Abovering = 16781912, Key_Dead_Acute = 16781905,
  Key_Dead_Belowdot = 16781920, Key_Dead_Breve = 16781909, Key_Dead_Caron = 16781914, Key_Dead_Cedilla = 16781915,
  Key_Dead_Circumflex = 16781906, Key_Dead_Diaeresis = 16781911, Key_Dead_Doubleacute = 16781913, Key_Dead_Grave = 16781904,
  Key_Dead_Hook = 16781921, Key_Dead_Horn = 16781922, Key_Dead_Iota = 16781917, Key_Dead_Macron = 16781908,
  Key_Dead_Ogonek = 16781916, Key_Dead_Semivoiced_Sound = 16781919, Key_Dead_Tilde = 16781907, Key_Dead_Voiced_Sound = 16781918,
  Key_Delete = 16777223, Key_Direction_L = 16777305, Key_Direction_R = 16777312, Key_Display = 16777425,
  Key_Documents = 16777427, Key_Dollar = 36, Key_Down = 16777237, Key_E = 69,
  Key_ETH = 208, Key_Eacute = 201, Key_Ecircumflex = 202, Key_Ediaeresis = 203,
  Key_Egrave = 200, Key_Eisu_Shift = 16781615, Key_Eisu_toggle = 16781616, Key_Eject = 16777401,
  Key_End = 16777233, Key_Enter = 16777221, Key_Equal = 61, Key_Escape = 16777216,
  Key_Excel = 16777428, Key_Exclam = 33, Key_Execute = 16908291, Key_Explorer = 16777429,
  Key_F = 70, Key_F1 = 16777264, Key_F10 = 16777273, Key_F11 = 16777274,
  Key_F12 = 16777275, Key_F13 = 16777276, Key_F14 = 16777277, Key_F15 = 16777278,
  Key_F16 = 16777279, Key_F17 = 16777280, Key_F18 = 16777281, Key_F19 = 16777282,
  Key_F2 = 16777265, Key_F20 = 16777283, Key_F21 = 16777284, Key_F22 = 16777285,
  Key_F23 = 16777286, Key_F24 = 16777287, Key_F25 = 16777288, Key_F26 = 16777289,
  Key_F27 = 16777290, Key_F28 = 16777291, Key_F29 = 16777292, Key_F3 = 16777266,
  Key_F30 = 16777293, Key_F31 = 16777294, Key_F32 = 16777295, Key_F33 = 16777296,
  Key_F34 = 16777297, Key_F35 = 16777298, Key_F4 = 16777267, Key_F5 = 16777268,
  Key_F6 = 16777269, Key_F7 = 16777270, Key_F8 = 16777271, Key_F9 = 16777272,
  Key_Favorites = 16777361, Key_Finance = 16777411, Key_Flip = 17825798, Key_Forward = 16777314,
  Key_G = 71, Key_Game = 16777430, Key_Go = 16777431, Key_Greater = 62,
  Key_H = 72, Key_Hangul = 16781617, Key_Hangul_Banja = 16781625, Key_Hangul_End = 16781619,
  Key_Hangul_Hanja = 16781620, Key_Hangul_Jamo = 16781621, Key_Hangul_Jeonja = 16781624, Key_Hangul_PostHanja = 16781627,
  Key_Hangul_PreHanja = 16781626, Key_Hangul_Romaja = 16781622, Key_Hangul_Special = 16781631, Key_Hangul_Start = 16781618,
  Key_Hangup = 17825797, Key_Hankaku = 16781609, Key_Help = 16777304, Key_Henkan = 16781603,
  Key_Hibernate = 16777480, Key_Hiragana = 16781605, Key_Hiragana_Katakana = 16781607, Key_History = 16777407,
  Key_Home = 16777232, Key_HomePage = 16777360, Key_HotLinks = 16777409, Key_Hyper_L = 16777302,
  Key_Hyper_R = 16777303, Key_I = 73, Key_Iacute = 205, Key_Icircumflex = 206,
  Key_Idiaeresis = 207, Key_Igrave = 204, Key_Insert = 16777222, Key_J = 74,
  Key_K = 75, Key_Kana_Lock = 16781613, Key_Kana_Shift = 16781614, Key_Kanji = 16781601,
  Key_Katakana = 16781606, Key_KeyboardBrightnessDown = 16777398, Key_KeyboardBrightnessUp = 16777397, Key_KeyboardLightOnOff = 16777396,
  Key_L = 76, Key_LastNumberRedial = 17825801, Key_Launch0 = 16777378, Key_Launch1 = 16777379,
  Key_Launch2 = 16777380, Key_Launch3 = 16777381, Key_Launch4 = 16777382, Key_Launch5 = 16777383,
  Key_Launch6 = 16777384, Key_Launch7 = 16777385, Key_Launch8 = 16777386, Key_Launch9 = 16777387,
  Key_LaunchA = 16777388, Key_LaunchB = 16777389, Key_LaunchC = 16777390, Key_LaunchD = 16777391,
  Key_LaunchE = 16777392, Key_LaunchF = 16777393, Key_LaunchG = 16777486, Key_LaunchH = 16777487,
  Key_LaunchMail = 16777376, Key_LaunchMedia = 16777377, Key_Left = 16777234, Key_Less = 60,
  Key_LightBulb = 16777405, Key_LogOff = 16777433, Key_M = 77, Key_MailForward = 16777467,
  Key_Market = 16777434, Key_Massyo = 16781612, Key_MediaLast = 16842751, Key_MediaNext = 16777347,
  Key_MediaPause = 16777349, Key_MediaPlay = 16777344, Key_MediaPrevious = 16777346, Key_MediaRecord = 16777348,
  Key_MediaStop = 16777345, Key_MediaTogglePlayPause = 16777350, Key_Meeting = 16777435, Key_Memo = 16777404,
  Key_Menu = 16777301, Key_MenuKB = 16777436, Key_MenuPB = 16777437, Key_Messenger = 16777465,
  Key_Meta = 16777250, Key_Minus = 45, Key_Mode_switch = 16781694, Key_MonBrightnessDown = 16777395,
  Key_MonBrightnessUp = 16777394, Key_Muhenkan = 16781602, Key_Multi_key = 16781600, Key_MultipleCandidate = 16781629,
  Key_Music = 16777469, Key_MySites = 16777438, Key_N = 78, Key_News = 16777439,
  Key_No = 16842754, Key_Ntilde = 209, Key_NumLock = 16777253, Key_NumberSign = 35,
  Key_O = 79, Key_Oacute = 211, Key_Ocircumflex = 212, Key_Odiaeresis = 214,
  Key_OfficeHome = 16777440, Key_Ograve = 210, Key_Ooblique = 216, Key_OpenUrl = 16777364,
  Key_Option = 16777441, Key_Otilde = 213, Key_P = 80, Key_PageDown = 16777239,
  Key_PageUp = 16777238, Key_ParenLeft = 40, Key_ParenRight = 41, Key_Paste = 16777442,
  Key_Pause = 16777224, Key_Percent = 37, Key_Period = 46, Key_Phone = 16777443,
  Key_Pictures = 16777468, Key_Play = 16908293, Key_Plus = 43, Key_PowerDown = 16777483,
  Key_PowerOff = 16777399, Key_PreviousCandidate = 16781630, Key_Print = 16777225, Key_Printer = 16908290,
  Key_Q = 81, Key_Question = 63, Key_QuoteDbl = 34, Key_QuoteLeft = 96,
  Key_R = 82, Key_Refresh = 16777316, Key_Reload = 16777446, Key_Reply = 16777445,
  Key_Return = 16777220, Key_Right = 16777236, Key_Romaji = 16781604, Key_RotateWindows = 16777447,
  Key_RotationKB = 16777449, Key_RotationPB = 16777448, Key_S = 83, Key_Save = 16777450,
  Key_ScreenSaver = 16777402, Key_ScrollLock = 16777254, Key_Search = 16777362, Key_Select = 16842752,
  Key_Semicolon = 59, Key_Send = 16777451, Key_Shift = 16777248, Key_Shop = 16777406,
  Key_SingleCandidate = 16781628, Key_Slash = 47, Key_Sleep = 16908292, Key_Space = 32,
  Key_Spell = 16777452, Key_SplitScreen = 16777453, Key_Standby = 16777363, Key_Stop = 16777315,
  Key_Subtitle = 16777477, Key_Super_L = 16777299, Key_Super_R = 16777300, Key_Support = 16777454,
  Key_Suspend = 16777484, Key_SysReq = 16777226, Key_T = 84, Key_THORN = 222,
  Key_Tab = 16777217, Key_TaskPane = 16777455, Key_Terminal = 16777456, Key_Time = 16777479,
  Key_ToDoList = 16777420, Key_ToggleCallHangup = 17825799, Key_Tools = 16777457, Key_TopMenu = 16777482,
  Key_Touroku = 16781611, Key_Travel = 16777458, Key_TrebleDown = 16777335, Key_TrebleUp = 16777334,
  Key_U = 85, Key_UWB = 16777473, Key_Uacute = 218, Key_Ucircumflex = 219,
  Key_Udiaeresis = 220, Key_Ugrave = 217, Key_Underscore = 95, Key_Up = 16777235,
  Key_V = 86, Key_Video = 16777459, Key_View = 16777481, Key_VoiceDial = 17825800,
  Key_VolumeDown = 16777328, Key_VolumeMute = 16777329, Key_VolumeUp = 16777330, Key_W = 87,
  Key_WLAN = 16777472, Key_WWW = 16777403, Key_WakeUp = 16777400, Key_WebCam = 16777466,
  Key_Word = 16777460, Key_X = 88, Key_Xfer = 16777461, Key_Y = 89,
  Key_Yacute = 221, Key_Yes = 16842753, Key_Z = 90, Key_Zenkaku = 16781608,
  Key_Zenkaku_Hankaku = 16781610, Key_Zoom = 16908294, Key_ZoomIn = 16777462, Key_ZoomOut = 16777463,
  Key_acute = 180, Key_brokenbar = 166, Key_cedilla = 184, Key_cent = 162,
  Key_copyright = 169, Key_currency = 164, Key_degree = 176, Key_diaeresis = 168,
  Key_division = 247, Key_exclamdown = 161, Key_guillemotleft = 171, Key_guillemotright = 187,
  Key_hyphen = 173, Key_iTouch = 16777432, Key_macron = 175, Key_masculine = 186,
  Key_mu = 181, Key_multiply = 215, Key_nobreakspace = 160, Key_notsign = 172,
  Key_onehalf = 189, Key_onequarter = 188, Key_onesuperior = 185, Key_ordfeminine = 170,
  Key_paragraph = 182, Key_periodcentered = 183, Key_plusminus = 177, Key_questiondown = 191,
  Key_registered = 174, Key_section = 167, Key_ssharp = 223, Key_sterling = 163,
  Key_threequarters = 190, Key_threesuperior = 179, Key_twosuperior = 178, Key_unknown = 33554431,
  Key_ydiaeresis = 255, Key_yen = 165
}
  More...
 
enum  KeyboardModifier {
  AltModifier = 134217728, ControlModifier = 67108864, GroupSwitchModifier = 1073741824, KeyboardModifierMask = -33554432,
  KeypadModifier = 536870912, MetaModifier = 268435456, NoModifier = 0, ShiftModifier = 33554432
}
  More...
 
enum  LayoutDirection { LayoutDirectionAuto = 2, LeftToRight = 0, RightToLeft = 1 }
  More...
 
enum  MaskMode { MaskInColor = 0, MaskOutColor = 1 }
  More...
 
enum  MatchFlag {
  MatchCaseSensitive = 16, MatchContains = 1, MatchEndsWith = 3, MatchExactly = 0,
  MatchFixedString = 8, MatchRecursive = 64, MatchRegExp = 4, MatchStartsWith = 2,
  MatchWildcard = 5, MatchWrap = 32
}
  More...
 
enum  Modifier {
  ALT = 134217728, CTRL = 67108864, META = 268435456, MODIFIER_MASK = -33554432,
  SHIFT = 33554432, UNICODE_ACCEL = 0
}
  More...
 
enum  MouseButton {
  LeftButton = 1, MidButton = 4, MiddleButton = 4, MouseButtonMask = 255,
  NoButton = 0, RightButton = 2, XButton1 = 8, XButton2 = 16
}
  More...
 
enum  NavigationMode {
  NavigationModeCursorAuto = 3, NavigationModeCursorForceVisible = 4, NavigationModeKeypadDirectional = 2, NavigationModeKeypadTabOrder = 1,
  NavigationModeNone = 0
}
  More...
 
enum  Orientation { Horizontal = 1, Vertical = 2 }
  More...
 
enum  PenCapStyle { FlatCap = 0, MPenCapStyle = 48, RoundCap = 32, SquareCap = 16 }
  More...
 
enum  PenJoinStyle {
  BevelJoin = 64, MPenJoinStyle = 448, MiterJoin = 0, RoundJoin = 128,
  SvgMiterJoin = 256
}
  More...
 
enum  PenStyle {
  CustomDashLine = 6, DashDotDotLine = 5, DashDotLine = 4, DashLine = 2,
  DotLine = 3, MPenStyle = 15, NoPen = 0, SolidLine = 1
}
  More...
 
enum  ScrollBarPolicy { ScrollBarAlwaysOff = 1, ScrollBarAlwaysOn = 2, ScrollBarAsNeeded = 0 }
  More...
 
enum  ShortcutContext { ApplicationShortcut = 2, WidgetShortcut = 0, WidgetWithChildrenShortcut = 3, WindowShortcut = 1 }
  More...
 
enum  SizeHint {
  MaximumSize = 2, MinimumDescent = 3, MinimumSize = 0, NSizeHints = 4,
  PreferredSize = 1
}
  More...
 
enum  SizeMode { AbsoluteSize = 0, RelativeSize = 1 }
  More...
 
enum  SortOrder { AscendingOrder = 0, DescendingOrder = 1 }
  More...
 
enum  TextElideMode { ElideLeft = 0, ElideMiddle = 2, ElideNone = 3, ElideRight = 1 }
  More...
 
enum  TextFlag {
  TextBypassShaping = 1048576, TextDontClip = 512, TextDontPrint = 16384, TextExpandTabs = 1024,
  TextForceLeftToRight = 131072, TextForceRightToLeft = 262144, TextHideMnemonic = 32768, TextIncludeTrailingSpaces = 134217728,
  TextJustificationForced = 65536, TextLongestVariant = 524288, TextShowMnemonic = 2048, TextSingleLine = 256,
  TextWordWrap = 4096, TextWrapAnywhere = 8192
}
  More...
 
enum  TextFormat { AutoText = 2, LogText = 3, PlainText = 0, RichText = 1 }
  More...
 
enum  TextInteractionFlag {
  LinksAccessibleByKeyboard = 8, LinksAccessibleByMouse = 4, NoTextInteraction = 0, TextBrowserInteraction = 13,
  TextEditable = 16, TextEditorInteraction = 19, TextSelectableByKeyboard = 2, TextSelectableByMouse = 1
}
  More...
 
enum  TileRule { RepeatTile = 1, RoundTile = 2, StretchTile = 0 }
  More...
 
enum  TimeSpec { LocalTime = 0, OffsetFromUTC = 2, UTC = 1 }
 
enum  ToolBarArea {
  AllToolBarAreas = 15, BottomToolBarArea = 8, LeftToolBarArea = 1, NoToolBarArea = 0,
  RightToolBarArea = 2, ToolBarArea_Mask = 15, TopToolBarArea = 4
}
 
enum  ToolBarAreaSizes { NToolBarAreas = 4 }
 
enum  ToolButtonStyle {
  ToolButtonFollowStyle = 4, ToolButtonIconOnly = 0, ToolButtonTextBesideIcon = 2, ToolButtonTextOnly = 1,
  ToolButtonTextUnderIcon = 3
}
  More...
 
enum  TouchPointState {
  TouchPointMoved = 2, TouchPointPressed = 1, TouchPointPrimary = 16, TouchPointReleased = 8,
  TouchPointStateMask = 15, TouchPointStationary = 4
}
  More...
 
enum  TransformationMode { FastTransformation = 0, SmoothTransformation = 1 }
  More...
 
enum  UIEffect {
  UI_AnimateCombo = 3, UI_AnimateMenu = 1, UI_AnimateToolBox = 6, UI_AnimateTooltip = 4,
  UI_FadeMenu = 2, UI_FadeTooltip = 5, UI_General = 0
}
  More...
 
enum  WidgetAttribute {
  WA_AcceptDrops = 78, WA_AcceptTouchEvents = 121, WA_AlwaysShowToolTips = 84, WA_AttributeCount = 135,
  WA_AutoOrientation = 130, WA_CanHostQMdiSubWindowTitleBar = 95, WA_ContentsPropagated = 3, WA_CustomWhatsThis = 47,
  WA_DeleteOnClose = 55, WA_Disabled = 0, WA_DontCreateNativeAncestors = 101, WA_DontShowOnScreen = 103,
  WA_DropSiteRegistered = 79, WA_ForceAcceptDrops = 79, WA_ForceDisabled = 32, WA_ForceUpdatesDisabled = 59,
  WA_GrabbedShortcut = 50, WA_GroupLeader = 72, WA_Hover = 74, WA_InputMethodEnabled = 14,
  WA_InputMethodTransparent = 75, WA_InvalidSize = 45, WA_KeyCompression = 33, WA_KeyboardFocusChange = 77,
  WA_LaidOut = 7, WA_LayoutOnEntireRect = 48, WA_LayoutUsesWidgetRect = 92, WA_LockLandscapeOrientation = 129,
  WA_LockPortraitOrientation = 128, WA_MSWindowsUseDirect3D = 94, WA_MacAlwaysShowToolWindow = 96, WA_MacBrushedMetal = 46,
  WA_MacFrameworkScaled = 117, WA_MacMetalStyle = 46, WA_MacMiniSize = 91, WA_MacNoClickThrough = 12,
  WA_MacNoShadow = 134, WA_MacNormalSize = 89, WA_MacOpaqueSizeGrip = 85, WA_MacShowFocusRect = 88,
  WA_MacSmallSize = 90, WA_MacVariableSize = 102, WA_Mapped = 11, WA_MergeSoftkeys = 124,
  WA_MergeSoftkeysRecursively = 125, WA_MouseNoMask = 71, WA_MouseTracking = 2, WA_Moved = 43,
  WA_NativeWindow = 100, WA_NoBackground = 4, WA_NoChildEventsForParent = 58, WA_NoChildEventsFromChildren = 39,
  WA_NoMousePropagation = 73, WA_NoMouseReplay = 54, WA_NoSystemBackground = 9, WA_NoX11EventCompression = 81,
  WA_OpaquePaintEvent = 4, WA_OutsideWSRange = 49, WA_PaintOnScreen = 8, WA_PaintOutsidePaintEvent = 13,
  WA_PaintUnclipped = 52, WA_PendingMoveEvent = 34, WA_PendingResizeEvent = 35, WA_PendingUpdate = 44,
  WA_QuitOnClose = 76, WA_Resized = 42, WA_RightToLeft = 56, WA_SetCursor = 38,
  WA_SetFont = 37, WA_SetLayoutDirection = 57, WA_SetLocale = 87, WA_SetPalette = 36,
  WA_SetStyle = 86, WA_SetWindowIcon = 53, WA_SetWindowModality = 118, WA_ShowModal = 70,
  WA_ShowWithoutActivating = 98, WA_StaticContents = 5, WA_StyleSheet = 97, WA_StyledBackground = 93,
  WA_SymbianNoSystemRotation = 133, WA_TintedBackground = 82, WA_TouchPadAcceptSingleTouchEvents = 123, WA_TranslucentBackground = 120,
  WA_TransparentForMouseEvents = 51, WA_UnderMouse = 1, WA_UpdatesDisabled = 10, WA_WState_AcceptedTouchBeginEvent = 122,
  WA_WState_CompressKeys = 61, WA_WState_ConfigPending = 64, WA_WState_Created = 60, WA_WState_DND = 67,
  WA_WState_ExplicitShowHide = 69, WA_WState_Hidden = 16, WA_WState_InPaintEvent = 62, WA_WState_OwnSizePolicy = 68,
  WA_WState_Polished = 66, WA_WState_Reparented = 63, WA_WState_Visible = 15, WA_WState_WindowOpacitySet = 119,
  WA_WindowModified = 41, WA_WindowPropagation = 80, WA_X11BypassTransientForHint = 99, WA_X11DoNotAcceptFocus = 132,
  WA_X11NetWmWindowTypeCombo = 115, WA_X11NetWmWindowTypeDND = 116, WA_X11NetWmWindowTypeDesktop = 104, WA_X11NetWmWindowTypeDialog = 110,
  WA_X11NetWmWindowTypeDock = 105, WA_X11NetWmWindowTypeDropDownMenu = 111, WA_X11NetWmWindowTypeMenu = 107, WA_X11NetWmWindowTypeNotification = 114,
  WA_X11NetWmWindowTypePopupMenu = 112, WA_X11NetWmWindowTypeSplash = 109, WA_X11NetWmWindowTypeToolBar = 106, WA_X11NetWmWindowTypeToolTip = 113,
  WA_X11NetWmWindowTypeUtility = 108, WA_X11OpenGLOverlay = 83
}
  More...
 
enum  WindowFrameSection {
  BottomLeftSection = 8, BottomRightSection = 6, BottomSection = 7, LeftSection = 1,
  NoSection = 0, RightSection = 5, TitleBarArea = 9, TopLeftSection = 2,
  TopRightSection = 4, TopSection = 3
}
  More...
 
enum  WindowModality { ApplicationModal = 2, NonModal = 0, WindowModal = 1 }
  More...
 
enum  WindowState {
  WindowActive = 8, WindowFullScreen = 4, WindowMaximized = 2, WindowMinimized = 1,
  WindowNoState = 0
}
  More...
 
enum  WindowType {
  BypassGraphicsProxyWidget = 536870912, CustomizeWindowHint = 33554432, Desktop = 17, Dialog = 3,
  Drawer = 7, FramelessWindowHint = 2048, MSWindowsFixedSizeDialogHint = 256, MSWindowsOwnDC = 512,
  MacWindowToolBarButtonHint = 268435456, Popup = 9, Sheet = 5, SplashScreen = 15,
  SubWindow = 18, Tool = 11, ToolTip = 13, Widget = 0,
  Window = 1, WindowCancelButtonHint = 1048576, WindowCloseButtonHint = 134217728, WindowContextHelpButtonHint = 65536,
  WindowMaximizeButtonHint = 32768, WindowMinMaxButtonsHint = 49152, WindowMinimizeButtonHint = 16384, WindowOkButtonHint = 524288,
  WindowShadeButtonHint = 131072, WindowSoftkeysRespondHint = -2147483648, WindowSoftkeysVisibleHint = 1073741824, WindowStaysOnBottomHint = 67108864,
  WindowStaysOnTopHint = 262144, WindowSystemMenuHint = 8192, WindowTitleHint = 4096, WindowType_Mask = 255,
  X11BypassWindowManagerHint = 1024
}
  More...
 
- Protected Attributes inherited from QtCore.QObject
object Q_EMIT = null
 
SmokeInvocation interceptor
 
readonly List< QEventHandler > eventFilters = new List<QEventHandler>()
 

Detailed Description

The QPluginLoader class loads a plugin at run-time.

QPluginLoader provides access to a Qt plugin. A Qt plugin is stored in a shared library (a DLL) and offers these benefits over shared libraries accessed using QLibrary:

QPluginLoader checks that a plugin is linked against the same version of Qt as the application.

QPluginLoader provides direct access to a root component object (instance()), instead of forcing you to resolve a C function manually.

An instance of a QPluginLoader object operates on a single shared library file, which we call a plugin. It provides access to the functionality in the plugin in a platform-independent way. To specify which plugin to load, either pass a file name in the constructor or set it with setFileName().

The most important functions are load() to dynamically load the plugin file, isLoaded() to check whether loading was successful, and instance() to access the root component in the plugin. The instance() function implicitly tries to load the plugin if it has not been loaded yet. Multiple instances of QPluginLoader can be used to access the same physical plugin.

Once loaded, plugins remain in memory until all instances of QPluginLoader has been unloaded, or until the application terminates. You can attempt to unload a plugin using unload(), but if other instances of QPluginLoader are using the same library, the call will fail, and unloading will only happen when every instance has called unload(). Right before the unloading happen, the root component will also be deleted.

In order to speed up loading and validation of plugins, some of the information that is collected during loading is cached in persistent memory (through QSettings). For instance, the result of a load operation (e.g. succeeded or failed) is stored in the cache, so that subsequent load operations don't try to load an invalid plugin. However, if the "last modified" timestamp of a plugin has changed, the plugin's cache entry is invalidated and the plugin is reloaded regardless of the values in the cache entry. The cache entry is then updated with the new result of the load operation.

This also means that the timestamp must be updated each time the plugin or any dependent resources (such as a shared library) is updated, since the dependent resources might influence the result of loading a plugin.

See How to Create Qt Plugins for more information about how to make your application extensible through plugins.

Note that the QPluginLoader cannot be used if your application is statically linked against Qt. In this case, you will also have to link to plugins statically. You can use QLibrary if you need to load dynamic libraries in a statically linked application.

Note: In Symbian the plugin stub files must be used whenever a path to plugin is needed. For the purposes of loading plugins, the stubs can be considered to have the same name as the actual plugin binary. In practice they have ".qtplugin" extension instead of ".dll", but this difference is handled transparently by QPluginLoader and QLibrary to avoid need for Symbian specific plugin handling in most Qt applications. Plugin stubs are needed because Symbian Platform Security denies all access to the directory where the actual plugin binaries are located.

See also QLibrary and Plug & Paint Example.

Constructor & Destructor Documentation

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

Constructs a plugin loader with the given parent.

QtCore.QPluginLoader.QPluginLoader ( string  fileName,
QObject  parent = null 
)

Constructs a plugin loader with the given parent that will load the plugin specified by fileName.

To be loadable, the file's suffix must be a valid suffix for a loadable library in accordance with the platform, e.g. .so on Unix, - .dylib on Mac OS X, and .dll on Windows. The suffix can be verified with QLibrary::isLibrary().

Note: In Symbian the fileName must point to plugin stub file.

See also setFileName().

Member Function Documentation

override void QtCore.QPluginLoader.CreateProxy ( )
virtual

Reimplemented from QtCore.QObject.

new void QtCore.QPluginLoader.Dispose ( )
static string QtCore.QPluginLoader.Tr ( string  s,
string  c = null 
)
static
static string QtCore.QPluginLoader.Tr ( string  s,
string  c,
int  n 
)
static
static string QtCore.QPluginLoader.TrUtf8 ( string  s,
string  c = null 
)
static
static string QtCore.QPluginLoader.TrUtf8 ( string  s,
string  c,
int  n 
)
static
new bool QtCore.QPluginLoader.Unload ( )

Unloads the plugin and returns true if the plugin could be unloaded; otherwise returns false.

This happens automatically on application termination, so you shouldn't normally need to call this function.

If other instances of QPluginLoader are using the same plugin, the call will fail, and unloading will only happen when every instance has called unload().

Don't try to delete the root component. Instead rely on that unload() will automatically delete it when needed.

See also instance() and load().

Property Documentation

new IQPluginLoaderSignals QtCore.QPluginLoader.Emit
getprotected
string QtCore.QPluginLoader.ErrorString
get

Returns a text string with the description of the last error that occurred.

This function was introduced in Qt 4.2.

new string QtCore.QPluginLoader.FileName
getset

This property holds the file name of the plugin.

To be loadable, the file's suffix must be a valid suffix for a loadable library in accordance with the platform, e.g. .so on Unix, .dylib on Mac OS X, and .dll on Windows. The suffix can be verified with QLibrary::isLibrary().

If the file name does not exist, it will not be set. This property will then contain an empty string.

By default, this property contains an empty string.

Note: In Symbian the fileName must point to plugin stub file.

QObject QtCore.QPluginLoader.Instance
get

Returns the root component object of the plugin. The plugin is loaded if necessary. The function returns 0 if the plugin could not be loaded or if the root component object could not be instantiated.

If the root component object was destroyed, calling this function creates a new instance.

The root component, returned by this function, is not deleted when the QPluginLoader is destroyed. If you want to ensure that the root component is deleted, you should call unload() as soon you don't need to access the core component anymore. When the library is finally unloaded, the root component will automatically be deleted.

The component object is a QObject. Use qobject_cast() to access interfaces you are interested in.

See also load().

bool QtCore.QPluginLoader.IsLoaded
get

Returns true if the plugin is loaded; otherwise returns false.

See also load().

bool QtCore.QPluginLoader.Load
get

Loads the plugin and returns true if the plugin was loaded successfully; otherwise returns false. Since instance() always calls this function before resolving any symbols it is not necessary to call it explicitly. In some situations you might want the plugin loaded in advance, in which case you would use this function.

See also unload().

new QLibrary.LoadHint QtCore.QPluginLoader.LoadHints
getset

This property holds give the load() function some hints on how it should behave.

You can give hints on how the symbols in the plugin are resolved. By default, none of the hints are set.

See the documentation of QLibrary::loadHints for a complete description of how this property works.

This property was introduced in Qt 4.4.

System.Collections.Generic.List<QObject> QtCore.QPluginLoader.StaticInstances
staticget

Returns a list of static plugin instances (root components) held by the plugin loader.

new QMetaObject QtCore.QPluginLoader.StaticMetaObject
staticget