QtGui.QAbstractScrollArea Class Reference

The QAbstractScrollArea widget provides a scrolling area with on-demand scroll bars. More...

Inheritance diagram for QtGui.QAbstractScrollArea:

Collaboration diagram for QtGui.QAbstractScrollArea:

Public Member Functions
	QAbstractScrollArea (QWidget parent=null)
override void	CreateProxy ()
new void	AddScrollBarWidget (QWidget widget, Qt.AlignmentFlag alignment)
override bool	OnEvent (QEvent arg1)
new QSize	MaximumViewportSize ()
override QSize	MinimumSizeHint ()
new System.Collections.Generic.List < QWidget >	ScrollBarWidgets (Qt.AlignmentFlag alignment)
override QSize	SizeHint ()
new void	Dispose ()
Public Member Functions inherited from QtGui.QFrame
	QFrame (QWidget parent=null, Qt.WindowType f=0)
override void	CreateProxy ()
override bool	OnEvent (QEvent e)
override QSize	SizeHint ()
new void	Dispose ()
Public Member Functions inherited from QtGui.QWidget
	QWidget (QWidget parent=null, Qt.WindowType f=0)
override void	CreateProxy ()
new System.Collections.Generic.List < QAction >	Actions ()
new void	ActivateWindow ()
new void	AddAction (QAction action)
new void	AddActions (System.Collections.Generic.List< QAction > actions)
new void	AdjustSize ()
new QWidget	ChildAt (QPoint p)
new QWidget	ChildAt (int x, int y)
new void	ClearFocus ()
new void	ClearMask ()
new bool	Close ()
new QRect	ContentsRect ()
new void	CreateWinId ()
virtual int	DevType ()
new NativeULong	EffectiveWinId ()
new void	EnsurePolished ()
override bool	OnEvent (QEvent arg1)
new QWidget	FocusWidget ()
new QFont	font ()
new QFontInfo	FontInfo ()
new QFontMetrics	FontMetrics ()
new QRect	geometry ()
new void	GetContentsMargins (ref int left, ref int top, ref int right, ref int bottom)
virtual System.IntPtr	GetDC ()
new void	GrabGesture (Qt.GestureType type, Qt.GestureFlag flags=0)
new void	GrabKeyboard ()
new void	GrabMouse ()
new void	GrabMouse (QCursor arg1)
new int	GrabShortcut (QKeySequence key, Qt.ShortcutContext context=Qt.ShortcutContext.WindowShortcut)
new QGraphicsProxyWidget	GraphicsProxyWidget ()
virtual int	HeightForWidth (int arg1)
new void	Hide ()
new Qt.InputMethodHint	inputMethodHints ()
virtual object	InputMethodQuery (Qt.InputMethodQuery arg1)
new void	InsertAction (QAction before, QAction action)
new void	InsertActions (QAction before, System.Collections.Generic.List< QAction > actions)
new NativeULong	InternalWinId ()
new bool	IsAncestorOf (QWidget child)
new bool	IsEnabledTo (QWidget arg1)
new bool	IsEnabledToTLW ()
new bool	IsHidden ()
new bool	IsLeftToRight ()
new bool	IsRightToLeft ()
new bool	IsTopLevel ()
new bool	IsVisibleTo (QWidget arg1)
new bool	IsWindow ()
new void	Lower ()
new QPoint	MapFrom (QWidget arg1, QPoint arg2)
new QPoint	MapFromGlobal (QPoint arg1)
new QPoint	MapFromParent (QPoint arg1)
new QPoint	MapTo (QWidget arg1, QPoint arg2)
new QPoint	MapToGlobal (QPoint arg1)
new QPoint	MapToParent (QPoint arg1)
new void	Move (int x, int y)
new QWidget	NativeParentWidget ()
new QWidget	NextInFocusChain ()
new void	OverrideWindowFlags (Qt.WindowType type)
new void	OverrideWindowState (Qt.WindowState state)
virtual QPaintEngine	PaintEngine ()
new QPalette	palette ()
new QWidget	ParentWidget ()
new QWidget	PreviousInFocusChain ()
new void	Raise ()
virtual void	ReleaseDC (System.IntPtr arg1)
new void	ReleaseKeyboard ()
new void	ReleaseMouse ()
new void	ReleaseShortcut (int id)
new void	RemoveAction (QAction action)
new void	Render (IQPaintDevice target)
new void	Render (QPainter painter)
new void	Render (IQPaintDevice target, QPoint targetOffset)
new void	Render (QPainter painter, QPoint targetOffset)
new void	Render (IQPaintDevice target, QPoint targetOffset, QRegion sourceRegion, QWidget.RenderFlag renderFlags=QWidget.RenderFlag.DrawWindowBackground|QWidget.RenderFlag.DrawChildren)
new void	Render (QPainter painter, QPoint targetOffset, QRegion sourceRegion, QWidget.RenderFlag renderFlags=QWidget.RenderFlag.DrawWindowBackground|QWidget.RenderFlag.DrawChildren)
new void	Repaint ()
new void	Repaint (QRect arg1)
new void	Repaint (QRegion arg1)
new void	Repaint (int x, int y, int w, int h)
new void	Resize (int w, int h)
new bool	RestoreGeometry (QByteArray geometry)
new QByteArray	SaveGeometry ()
new void	Scroll (int dx, int dy)
new void	Scroll (int dx, int dy, QRect arg3)
new void	SetAttribute (Qt.WidgetAttribute arg1, bool on=true)
new void	SetBaseSize (int basew, int baseh)
new void	SetContentsMargins (int left, int top, int right, int bottom)
new void	SetDisabled (bool arg1)
new void	SetFixedHeight (int h)
new void	SetFixedSize (QSize arg1)
new void	SetFixedSize (int w, int h)
new void	SetFixedWidth (int w)
new void	SetFocus ()
new void	SetFocus (Qt.FocusReason reason)
new void	SetGeometry (int x, int y, int w, int h)
new void	SetHidden (bool hidden)
new void	SetInputMethodHints (Qt.InputMethodHint hints)
new void	SetMask (QBitmap arg1)
new void	SetMaximumSize (int maxw, int maxh)
new void	SetMinimumSize (int minw, int minh)
new void	SetParent (QWidget parent)
new void	SetParent (QWidget parent, Qt.WindowType f)
new void	SetShortcutAutoRepeat (int id, bool enable=true)
new void	SetShortcutEnabled (int id, bool enable=true)
new void	SetShown (bool shown)
new void	SetSizeIncrement (int w, int h)
new void	SetSizePolicy (QSizePolicy.Policy horizontal, QSizePolicy.Policy vertical)
virtual void	SetVisible (bool visible)
new void	Show ()
new void	ShowFullScreen ()
new void	ShowMaximized ()
new void	ShowMinimized ()
new void	ShowNormal ()
new void	StackUnder (QWidget arg1)
new bool	TestAttribute (Qt.WidgetAttribute arg1)
new QWidget	TopLevelWidget ()
new bool	UnderMouse ()
new void	UngrabGesture (Qt.GestureType type)
new void	UnsetCursor ()
new void	UnsetLayoutDirection ()
new void	UnsetLocale ()
new void	Update ()
new void	Update (QRect arg1)
new void	Update (QRegion arg1)
new void	Update (int x, int y, int w, int h)
new void	UpdateGeometry ()
new QRegion	VisibleRegion ()
new NativeULong	WinId ()
new QWidget	Window ()
new Qt.WindowType	WindowType ()
new void	Dispose ()
new int	ColorCount ()
new int	Depth ()
new int	HeightMM ()
new int	LogicalDpiX ()
new int	LogicalDpiY ()
new int	NumColors ()
new bool	PaintingActive ()
new int	PhysicalDpiX ()
new int	PhysicalDpiY ()
new int	WidthMM ()
Public Member Functions inherited from QtCore.QObject
	QObject (QObject parent=null)
new bool	BlockSignals (bool b)
new System.Collections.Generic.List < QObject >	Children ()
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 ()
new System.Collections.Generic.List < QByteArray >	DynamicPropertyNames ()
virtual bool	EventFilter (QObject arg1, QEvent arg2)
new bool	Inherits (string classname)
new void	InstallEventFilter (QObject arg1)
new bool	IsWidgetType ()
new void	KillTimer (int id)
new object	Property (string name)
new void	RemoveEventFilter (QObject arg1)
new bool	SetProperty (string name, object value)
new void	SetUserData (uint id, QObjectUserData data)
new bool	SignalsBlocked ()
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 string	FuncStringQByteArray (QByteArray qByteArray)
delegate QByteArray	FuncQByteArrayString (string @string)
delegate void	ActionQtMsgTypeString (QtMsgType qtMsgType, string @string)
delegate QObject	FuncQObject ()
Public Member Functions inherited from QtGui.IQPaintDevice
new int	ColorCount ()
new int	Depth ()
int	DevType ()
System.IntPtr	GetDC ()
new int	Height ()
new int	HeightMM ()
new int	LogicalDpiX ()
new int	LogicalDpiY ()
new int	NumColors ()
QPaintEngine	PaintEngine ()
new bool	PaintingActive ()
new int	PhysicalDpiX ()
new int	PhysicalDpiY ()
void	ReleaseDC (System.IntPtr hdc)
new int	Width ()
new int	WidthMM ()

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 QtGui.QFrame
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 QtGui.QWidget
static QWidget	Find (NativeULong arg1)
static QWidget	KeyboardGrabber ()
static QWidget	MouseGrabber ()
static void	SetTabOrder (QWidget arg1, QWidget arg2)
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 arg5=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 uint	RegisterUserData ()
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 arg1, QSizeF arg2)
static QTextStream	Write (QTextStream s, Qt.FuncQTextStreamQTextStream f)
static QDataStream	Write (QDataStream arg1, QPoint arg2)
static QDataStream	Write (QDataStream arg1, QLineF arg2)
static QDataStream	Write (QDataStream arg1, QPointF arg2)
static QDataStream	Write (QDataStream arg1, QChar arg2)
static QDataStream	Write (QDataStream arg1, QByteArray arg2)
static QDataStream	Write (QDataStream arg1, QEasingCurve arg2)
static QDataStream	Write (QDataStream arg1, QRectF arg2)
static QDataStream	Write (QDataStream arg1, QDateTime arg2)
static QDataStream	Write (QDataStream arg1, QUrl arg2)
static QDataStream	Write (QDataStream arg1, QTime arg2)
static QDataStream	Write (QDataStream arg1, QLocale arg2)
static QDataStream	Write (QDataStream arg1, QBitArray arg2)
static QDataStream	Write (QDataStream arg1, QUuid arg2)
static QDataStream	Write (QDataStream arg1, QLine arg2)
static QDataStream	Write (QDataStream arg1, QDate arg2)
static QDataStream	Write (QDataStream @out, QRegExp regExp)
static QDataStream	Write (QDataStream arg1, QRect arg2)
static QDataStream	Write (QDataStream arg1, QSize arg2)
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 arg1, QChar arg2)
static QDataStream	Read (QDataStream arg1, QLocale arg2)
static QDataStream	Read (QDataStream arg1, QRect arg2)
static QDataStream	Read (QDataStream arg1, QEasingCurve arg2)
static QDataStream	Read (QDataStream arg1, QDate arg2)
static QDataStream	Read (QDataStream arg1, QUrl arg2)
static QDataStream	Read (QDataStream arg1, QUuid arg2)
static QTextStream	Read (QTextStream s, Qt.FuncQTextStreamQTextStream f)
static QDataStream	Read (QDataStream arg1, QLineF arg2)
static QDataStream	Read (QDataStream arg1, QRectF arg2)
static QDataStream	Read (QDataStream arg1, QPointF arg2)
static QDataStream	Read (QDataStream arg1, QLine arg2)
static QDataStream	Read (QDataStream arg1, QBitArray arg2)
static QDataStream	Read (QDataStream arg1, QSize arg2)
static QDataStream	Read (QDataStream arg1, QDateTime arg2)
static QDataStream	Read (QDataStream arg1, QTime arg2)
static QDataStream	Read (QDataStream arg1, QPoint arg2)
static QDataStream	Read (QDataStream @in, QRegExp regExp)
static QDataStream	Read (QDataStream s, object p)
static QDataStream	Read (QDataStream arg1, QByteArray arg2)
static QDataStream	Read (QDataStream arg1, QSizeF arg2)
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 arg1)
static string	qAppName ()
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)
static QByteArray	qCompress (QByteArray data, int compressionLevel=-1)
static QByteArray	qCompress (Pointer< byte > data, int nbytes)
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 (sbyte 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 double	qInf ()
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 double	qQNaN ()
static void	qRegisterStaticPluginInstanceFunction (Qt.FuncQObject function)
static void	qRemovePostRoutine (System.Action arg1)
static int	qRound (double d)
static long	qRound64 (double d)
static double	qSNaN ()
static bool	qSharedBuild ()
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 string	qVersion ()
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 int	Qrand ()
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 arg1)
static int	Qstricmp (string arg1, string arg2)
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 arg1, string arg2, uint len)
static uint	Qstrnlen (string str, uint maxlen)
static string	QtTrId (string id, int n=-1)

Protected Member Functions
	QAbstractScrollArea (System.Type dummy)
override void	OnContextMenuEvent (QContextMenuEvent arg1)
override void	OnDragEnterEvent (QDragEnterEvent arg1)
override void	OnDragLeaveEvent (QDragLeaveEvent arg1)
override void	OnDragMoveEvent (QDragMoveEvent arg1)
override void	OnDropEvent (QDropEvent arg1)
override void	OnKeyPressEvent (QKeyEvent arg1)
override void	OnMouseDoubleClickEvent (QMouseEvent arg1)
override void	OnMouseMoveEvent (QMouseEvent arg1)
override void	OnMousePressEvent (QMouseEvent arg1)
override void	OnMouseReleaseEvent (QMouseEvent arg1)
override void	OnPaintEvent (QPaintEvent arg1)
override void	OnResizeEvent (QResizeEvent arg1)
virtual void	ScrollContentsBy (int dx, int dy)
new void	SetViewportMargins (QMargins margins)
new void	SetViewportMargins (int left, int top, int right, int bottom)
new void	SetupViewport (QWidget viewport)
virtual bool	OnViewportEvent (QEvent arg1)
override void	OnWheelEvent (QWheelEvent arg1)
Protected Member Functions inherited from QtGui.QFrame
	QFrame (System.Type dummy)
override void	OnChangeEvent (QEvent arg1)
new void	DrawFrame (QPainter arg1)
override void	OnPaintEvent (QPaintEvent arg1)
Protected Member Functions inherited from QtGui.QWidget
	QWidget (System.Type dummy)
virtual void	OnActionEvent (QActionEvent arg1)
virtual void	OnCloseEvent (QCloseEvent arg1)
new void	Create ()
new void	Create (NativeULong arg1, bool initializeWindow=true, bool destroyOldWindow=true)
new void	OnCustomContextMenuRequested (QPoint pos)
new void	Destroy (bool destroyWindow=true, bool destroySubWindows=true)
virtual void	EnabledChange (bool arg1)
virtual void	OnEnterEvent (QEvent arg1)
virtual void	OnFocusInEvent (QFocusEvent arg1)
new bool	FocusNextChild ()
virtual bool	FocusNextPrevChild (bool next)
virtual void	OnFocusOutEvent (QFocusEvent arg1)
new bool	FocusPreviousChild ()
virtual void	FontChange (QFont arg1)
virtual void	OnHideEvent (QHideEvent arg1)
virtual void	OnInputMethodEvent (QInputMethodEvent arg1)
virtual void	OnKeyReleaseEvent (QKeyEvent arg1)
virtual void	LanguageChange ()
virtual void	OnLeaveEvent (QEvent arg1)
virtual int	Metric (QPaintDevice.PaintDeviceMetric arg1)
virtual void	OnMoveEvent (QMoveEvent arg1)
virtual void	PaletteChange (QPalette arg1)
new void	ResetInputContext ()
virtual void	OnShowEvent (QShowEvent arg1)
virtual void	StyleChange (QStyle arg1)
virtual void	OnTabletEvent (QTabletEvent arg1)
new void	UpdateMicroFocus ()
virtual void	WindowActivationChange (bool arg1)
Protected Member Functions inherited from QtCore.QObject
	QObject (System.Type dummy)
virtual void	OnChildEvent (QChildEvent arg1)
virtual void	ConnectNotify (string signal)
virtual void	OnCustomEvent (QEvent arg1)
new void	OnDestroyed (QObject arg1=null)
virtual void	DisconnectNotify (string signal)
new int	Receivers (string signal)
new QObject	Sender ()
new int	SenderSignalIndex ()
virtual void	OnTimerEvent (QTimerEvent arg1)

Properties
virtual EventHandler < QEventArgs< QEvent > >	ViewportEvent
new QWidget	CornerWidget [get, set]
new QScrollBar	HorizontalScrollBar [get, set]
new QScrollBar	VerticalScrollBar [get, set]
new QWidget	Viewport [get, set]
override EventHandler < QEventArgs< QPaintEvent > >	PaintEvent
override EventHandler < QEventArgs< QActionEvent > >	ActionEvent
override EventHandler < QEventArgs< QEvent > >	ChangeEvent
override EventHandler < QEventArgs< QCloseEvent > >	CloseEvent
override EventHandler < QEventArgs < QContextMenuEvent > >	ContextMenuEvent
override EventHandler < QEventArgs< QDragEnterEvent > >	DragEnterEvent
override EventHandler < QEventArgs< QDragLeaveEvent > >	DragLeaveEvent
override EventHandler < QEventArgs< QDragMoveEvent > >	DragMoveEvent
override EventHandler < QEventArgs< QDropEvent > >	DropEvent
override EventHandler < QEventArgs< QEvent > >	EnterEvent
override EventHandler < QEventArgs< QFocusEvent > >	FocusInEvent
override EventHandler < QEventArgs< QFocusEvent > >	FocusOutEvent
override EventHandler < QEventArgs< QHideEvent > >	HideEvent
override EventHandler < QEventArgs < QInputMethodEvent > >	InputMethodEvent
override EventHandler < QEventArgs< QKeyEvent > >	KeyPressEvent
override EventHandler < QEventArgs< QKeyEvent > >	KeyReleaseEvent
override EventHandler < QEventArgs< QEvent > >	LeaveEvent
override EventHandler < QEventArgs< QMouseEvent > >	MouseDoubleClickEvent
override EventHandler < QEventArgs< QMouseEvent > >	MouseMoveEvent
override EventHandler < QEventArgs< QMouseEvent > >	MousePressEvent
override EventHandler < QEventArgs< QMouseEvent > >	MouseReleaseEvent
override EventHandler < QEventArgs< QMoveEvent > >	MoveEvent
override EventHandler < QEventArgs< QResizeEvent > >	ResizeEvent
override EventHandler < QEventArgs< QShowEvent > >	ShowEvent
override EventHandler < QEventArgs< QTabletEvent > >	TabletEvent
override EventHandler < QEventArgs< QWheelEvent > >	WheelEvent
new Qt.ScrollBarPolicy	VerticalScrollBarPolicy [get, set]
new Qt.ScrollBarPolicy	HorizontalScrollBarPolicy [get, set]
static new QMetaObject	StaticMetaObject [get]
new IQAbstractScrollAreaSignals	Emit [get]
Properties inherited from QtGui.QFrame
new int	FrameStyle [get, set]
new Shape	FrameShape [get, set]
new Shadow	FrameShadow [get, set]
new int	LineWidth [get, set]
new int	MidLineWidth [get, set]
new int	FrameWidth [get]
new QRect	FrameRect [get, set]
static new QMetaObject	StaticMetaObject [get]
new IQFrameSignals	Emit [get]
Properties inherited from QtGui.QWidget
virtual EventHandler < QEventArgs< QActionEvent > >	ActionEvent
virtual EventHandler < QEventArgs< QEvent > >	ChangeEvent
virtual EventHandler < QEventArgs< QCloseEvent > >	CloseEvent
virtual EventHandler < QEventArgs < QContextMenuEvent > >	ContextMenuEvent
virtual EventHandler < QEventArgs< QDragEnterEvent > >	DragEnterEvent
virtual EventHandler < QEventArgs< QDragLeaveEvent > >	DragLeaveEvent
virtual EventHandler < QEventArgs< QDragMoveEvent > >	DragMoveEvent
virtual EventHandler < QEventArgs< QDropEvent > >	DropEvent
virtual EventHandler < QEventArgs< QEvent > >	EnterEvent
virtual EventHandler < QEventArgs< QFocusEvent > >	FocusInEvent
virtual EventHandler < QEventArgs< QFocusEvent > >	FocusOutEvent
virtual EventHandler < QEventArgs< QHideEvent > >	HideEvent
virtual EventHandler < QEventArgs < QInputMethodEvent > >	InputMethodEvent
virtual EventHandler < QEventArgs< QKeyEvent > >	KeyPressEvent
virtual EventHandler < QEventArgs< QKeyEvent > >	KeyReleaseEvent
virtual EventHandler < QEventArgs< QEvent > >	LeaveEvent
virtual EventHandler < QEventArgs< QMouseEvent > >	MouseDoubleClickEvent
virtual EventHandler < QEventArgs< QMouseEvent > >	MouseMoveEvent
virtual EventHandler < QEventArgs< QMouseEvent > >	MousePressEvent
virtual EventHandler < QEventArgs< QMouseEvent > >	MouseReleaseEvent
virtual EventHandler < QEventArgs< QMoveEvent > >	MoveEvent
virtual EventHandler < QEventArgs< QPaintEvent > >	PaintEvent
virtual EventHandler < QEventArgs< QResizeEvent > >	ResizeEvent
virtual EventHandler < QEventArgs< QShowEvent > >	ShowEvent
virtual EventHandler < QEventArgs< QTabletEvent > >	TabletEvent
virtual EventHandler < QEventArgs< QWheelEvent > >	WheelEvent
Slot< QPoint >	CustomContextMenuRequested
new QPalette.ColorRole	BackgroundRole [get, set]
new QMargins	ContentsMargins [get, set]
new QWidget	FocusProxy [get, set]
new QPalette.ColorRole	ForegroundRole [get, set]
new QGraphicsEffect	GraphicsEffect [get, set]
new QInputContext	InputContext [get, set]
new QLayout	Layout [get, set]
new QRegion	Mask [get, set]
new QStyle	Style [get, set]
new Qt.WindowType	WindowFlags [get, set]
new string	WindowRole [get, set]
new Qt.WindowState	WindowState [get, set]
new bool	Modal [get]
new Qt.WindowModality	WindowModality [get, set]
new bool	Enabled [get, set]
new QRect	Geometry [get, set]
new QRect	FrameGeometry [get]
new QRect	NormalGeometry [get]
new int	X [get]
new int	Y [get]
new QPoint	Pos [get, set]
new QSize	FrameSize [get]
new QSize	Size [get, set]
new int	Width [get]
new int	Height [get]
new QRect	Rect [get]
new QRect	ChildrenRect [get]
new QRegion	ChildrenRegion [get]
new QSizePolicy	SizePolicy [get, set]
new QSize	MinimumSize [get, set]
new QSize	MaximumSize [get, set]
new int	MinimumWidth [get, set]
new int	MinimumHeight [get, set]
new int	MaximumWidth [get, set]
new int	MaximumHeight [get, set]
new QSize	SizeIncrement [get, set]
new QSize	BaseSize [get, set]
new QPalette	Palette [get, set]
new QFont	Font [get, set]
new QCursor	Cursor [get, set]
new bool	MouseTracking [get, set]
new bool	IsActiveWindow [get]
new Qt.FocusPolicy	FocusPolicy [get, set]
new bool	Focus [get]
new Qt.ContextMenuPolicy	ContextMenuPolicy [get, set]
new bool	UpdatesEnabled [get, set]
new bool	Visible [get, set]
new bool	Minimized [get]
new bool	Maximized [get]
new bool	FullScreen [get]
new bool	AcceptDrops [get, set]
new string	WindowTitle [get, set]
new QIcon	WindowIcon [get, set]
new string	WindowIconText [get, set]
new double	WindowOpacity [get, set]
new bool	WindowModified [get, set]
new string	ToolTip [get, set]
new string	StatusTip [get, set]
new string	WhatsThis [get, set]
new string	AccessibleName [get, set]
new string	AccessibleDescription [get, set]
new Qt.LayoutDirection	LayoutDirection [get, set]
new bool	AutoFillBackground [get, set]
new string	StyleSheet [get, set]
new QLocale	Locale [get, set]
new string	WindowFilePath [get, set]
new Qt.InputMethodHint	InputMethodHints [get, set]
static new QMetaObject	StaticMetaObject [get]
new ushort	Painters [get, set]
new IQWidgetSignals	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< QObject >	DestroyedQObject
Slot	Destroyed
new QObject	Parent [get, set]
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]

Additional Inherited Members
Public Types inherited from QtGui.QFrame
enum	Shadow { Plain = 16, Raised = 32, Sunken = 48 }
	More...
enum	Shape {   Box = 1, HLine = 4, NoFrame = 0, Panel = 2,   StyledPanel = 6, VLine = 5, WinPanel = 3 }
	More...
enum	StyleMask { Shadow_Mask = 240, Shape_Mask = 15 }
	More...
Protected Attributes inherited from QtCore.QObject
object	Q_EMIT = null
SmokeInvocation	interceptor
readonly List< QEventHandler >	eventFilters = new List<QEventHandler>()

Detailed Description

The QAbstractScrollArea widget provides a scrolling area with on-demand scroll bars.

QAbstractScrollArea is a low-level abstraction of a scrolling area. The area provides a central widget called the viewport, in which the contents of the area is to be scrolled (i.e, the visible parts of the contents are rendered in the viewport).

Next to the viewport is a vertical scroll bar, and below is a horizontal scroll bar. When all of the area contents fits in the viewport, each scroll bar can be either visible or hidden depending on the scroll bar's Qt::ScrollBarPolicy. When a scroll bar is hidden, the viewport expands in order to cover all available space. When a scroll bar becomes visible again, the viewport shrinks in order to make room for the scroll bar.

It is possible to reserve a margin area around the viewport, see setViewportMargins(). The feature is mostly used to place a QHeaderView widget above or beside the scrolling area. Subclasses of QAbstractScrollArea should implement margins.

When inheriting QAbstractScrollArea, you need to do the following:

Control the scroll bars by setting their range, value, page step, and tracking their movements.

Draw the contents of the area in the viewport according to the values of the scroll bars.

Handle events received by the viewport in viewportEvent() - notably resize events.

Use viewport->update() to update the contents of the viewport instead of update() as all painting operations take place on the viewport.

With a scroll bar policy of Qt::ScrollBarAsNeeded (the default), QAbstractScrollArea shows scroll bars when they provide a non-zero scrolling range, and hides them otherwise.

The scroll bars and viewport should be updated whenever the viewport receives a resize event or the size of the contents changes. The viewport also needs to be updated when the scroll bars values change. The initial values of the scroll bars are often set when the area receives new contents.

We give a simple example, in which we have implemented a scroll area that can scroll any QWidget. We make the widget a child of the viewport; this way, we do not have to calculate which part of the widget to draw but can simply move the widget with QWidget::move(). When the area contents or the viewport size changes, we do the following:

QSize areaSize = viewport()->size();

QSize widgetSize = widget->size();

verticalScrollBar()->setPageStep(areaSize.height());

horizontalScrollBar()->setPageStep(areaSize.width());

verticalScrollBar()->setRange(0, widgetSize.height() - areaSize.height());

horizontalScrollBar()->setRange(0, widgetSize.width() - areaSize.width());

updateWidgetPosition();

When the scroll bars change value, we need to update the widget position, i.e., find the part of the widget that is to be drawn in the viewport:

int hvalue = horizontalScrollBar()->value();

int vvalue = verticalScrollBar()->value();

QPoint topLeft = viewport()->rect().topLeft();

widget->move(topLeft.x() - hvalue, topLeft.y() - vvalue);

In order to track scroll bar movements, reimplement the virtual function scrollContentsBy(). In order to fine-tune scrolling behavior, connect to a scroll bar's QAbstractSlider::actionTriggered() signal and adjust the QAbstractSlider::sliderPosition as you wish.

For convenience, QAbstractScrollArea makes all viewport events available in the virtual viewportEvent() handler. QWidget's specialized handlers are remapped to viewport events in the cases where this makes sense. The remapped specialized handlers are: paintEvent(), mousePressEvent(), mouseReleaseEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), wheelEvent(), dragEnterEvent(), dragMoveEvent(), dragLeaveEvent(), dropEvent(), contextMenuEvent(), and resizeEvent().

QScrollArea, which inherits QAbstractScrollArea, provides smooth scrolling for any QWidget (i.e., the widget is scrolled pixel by pixel). You only need to subclass QAbstractScrollArea if you need more specialized behavior. This is, for instance, true if the entire contents of the area is not suitable for being drawn on a QWidget or if you do not want smooth scrolling.

See also QScrollArea.

Constructor & Destructor Documentation

QtGui.QAbstractScrollArea.QAbstractScrollArea ( System.Type  dummy )

protected

QtGui.QAbstractScrollArea.QAbstractScrollArea

(

QWidget

parent = null

)

Constructs a viewport.

The parent argument is sent to the QWidget constructor.

Member Function Documentation

new void QtGui.QAbstractScrollArea.AddScrollBarWidget	(	QWidget	widget,
		Qt.AlignmentFlag	alignment
	)

Adds widget as a scroll bar widget in the location specified by alignment.

Scroll bar widgets are shown next to the horizontal or vertical scroll bar, and can be placed on either side of it. If you want the scroll bar widgets to be always visible, set the scrollBarPolicy for the corresponding scroll bar to AlwaysOn.

alignment must be one of Qt::Alignleft and Qt::AlignRight, which maps to the horizontal scroll bar, or Qt::AlignTop and Qt::AlignBottom, which maps to the vertical scroll bar.

A scroll bar widget can be removed by either re-parenting the widget or deleting it. It's also possible to hide a widget with QWidget::hide()

The scroll bar widget will be resized to fit the scroll bar geometry for the current style. The following describes the case for scroll bar widgets on the horizontal scroll bar:

The height of the widget will be set to match the height of the scroll bar. To control the width of the widget, use QWidget::setMinimumWidth and QWidget::setMaximumWidth, or implement QWidget::sizeHint() and set a horizontal size policy. If you want a square widget, call QStyle::pixelMetric(QStyle::PM_ScrollBarExtent) and set the width to this value.

This function was introduced in Qt 4.2.

See also scrollBarWidgets().

override void QtGui.QAbstractScrollArea.CreateProxy ( )

virtual

Reimplemented from QtCore.QObject.

Reimplemented in QtGui.QUndoView, QtGui.QTreeWidget, QtGui.QTreeView, QtGui.QTextEdit, QtGui.QTextBrowser, QtGui.QTableWidget, QtGui.QTableView, QtGui.QScrollArea, QtGui.QPlainTextEdit, QtGui.QMdiArea, QtGui.QListWidget, QtGui.QListView, QtGui.QHeaderView, QtGui.QGraphicsView, and QtGui.QColumnView.

new void QtGui.QAbstractScrollArea.Dispose

(

)

new QSize QtGui.QAbstractScrollArea.MaximumViewportSize

(

)

Returns the size of the viewport as if the scroll bars had no valid scrolling range.

override QSize QtGui.QAbstractScrollArea.MinimumSizeHint ( )

virtual

Reimplemented from QWidget::minimumSizeHint().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QMdiArea.

override void QtGui.QAbstractScrollArea.OnContextMenuEvent ( QContextMenuEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::contextMenuEvent().

This event handler can be reimplemented in a subclass to receive context menu events for the viewport() widget. The event is passed in e.

See also QWidget::contextMenuEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, and QtGui.QPlainTextEdit.

override void QtGui.QAbstractScrollArea.OnDragEnterEvent ( QDragEnterEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::dragEnterEvent().

This event handler can be reimplemented in a subclass to receive drag enter events (passed in event), for the viewport() widget.

See also QWidget::dragEnterEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, and QtGui.QPlainTextEdit.

override void QtGui.QAbstractScrollArea.OnDragLeaveEvent ( QDragLeaveEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::dragLeaveEvent().

This event handler can be reimplemented in a subclass to receive drag leave events (passed in event), for the viewport() widget.

See also QWidget::dragLeaveEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QPlainTextEdit, and QtGui.QListView.

override void QtGui.QAbstractScrollArea.OnDragMoveEvent ( QDragMoveEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::dragMoveEvent().

This event handler can be reimplemented in a subclass to receive drag move events (passed in event), for the viewport() widget.

See also QWidget::dragMoveEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QPlainTextEdit, and QtGui.QListView.

override void QtGui.QAbstractScrollArea.OnDropEvent ( QDropEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::dropEvent().

This event handler can be reimplemented in a subclass to receive drop events (passed in event), for the viewport() widget.

See also QWidget::dropEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QPlainTextEdit, and QtGui.QListView.

override bool QtGui.QAbstractScrollArea.OnEvent ( QEvent  arg1 )

virtual

Reimplemented from QObject::event().

This is the main event handler for the QAbstractScrollArea widget (not the scrolling area viewport()). The specified event is a general event object that may need to be cast to the appropriate class depending on its type.

See also QEvent::type().

Reimplemented from QtCore.QObject.

Reimplemented in QtGui.QTreeWidget, QtGui.QTextEdit, QtGui.QTextBrowser, QtGui.QTableWidget, QtGui.QScrollArea, QtGui.QPlainTextEdit, QtGui.QListWidget, QtGui.QListView, and QtGui.QHeaderView.

override void QtGui.QAbstractScrollArea.OnKeyPressEvent ( QKeyEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::keyPressEvent().

This function is called with key event e when key presses occur. It handles PageUp, PageDown, Up, Down, Left, and Right, and ignores all other key presses.

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QTextBrowser, and QtGui.QPlainTextEdit.

override void QtGui.QAbstractScrollArea.OnMouseDoubleClickEvent ( QMouseEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::mouseDoubleClickEvent().

This event handler can be reimplemented in a subclass to receive mouse double click events for the viewport() widget. The event is passed in e.

See also QWidget::mouseDoubleClickEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QPlainTextEdit, and QtGui.QHeaderView.

override void QtGui.QAbstractScrollArea.OnMouseMoveEvent ( QMouseEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::mouseMoveEvent().

This event handler can be reimplemented in a subclass to receive mouse move events for the viewport() widget. The event is passed in e.

See also QWidget::mouseMoveEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QTextBrowser, QtGui.QPlainTextEdit, QtGui.QListView, and QtGui.QHeaderView.

override void QtGui.QAbstractScrollArea.OnMousePressEvent ( QMouseEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::mousePressEvent().

This event handler can be reimplemented in a subclass to receive mouse press events for the viewport() widget. The event is passed in e.

See also QWidget::mousePressEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QTextBrowser, QtGui.QPlainTextEdit, and QtGui.QHeaderView.

override void QtGui.QAbstractScrollArea.OnMouseReleaseEvent ( QMouseEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::mouseReleaseEvent().

This event handler can be reimplemented in a subclass to receive mouse release events for the viewport() widget. The event is passed in e.

See also QWidget::mouseReleaseEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QTextBrowser, QtGui.QPlainTextEdit, QtGui.QListView, and QtGui.QHeaderView.

override void QtGui.QAbstractScrollArea.OnPaintEvent ( QPaintEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::paintEvent().

This event handler can be reimplemented in a subclass to receive paint events (passed in event), for the viewport() widget.

Note: If you open a painter, make sure to open it on the viewport().

See also QWidget::paintEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QTextBrowser, QtGui.QTableView, QtGui.QPlainTextEdit, QtGui.QMdiArea, QtGui.QListView, and QtGui.QHeaderView.

override void QtGui.QAbstractScrollArea.OnResizeEvent ( QResizeEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::resizeEvent().

This event handler can be reimplemented in a subclass to receive resize events (passed in event), for the viewport() widget.

When resizeEvent() is called, the viewport already has its new geometry: Its new size is accessible through the QResizeEvent::size() function, and the old size through QResizeEvent::oldSize().

See also QWidget::resizeEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, QtGui.QScrollArea, QtGui.QPlainTextEdit, QtGui.QMdiArea, and QtGui.QListView.

virtual bool QtGui.QAbstractScrollArea.OnViewportEvent ( QEvent  arg1 )

protectedvirtual

The main event handler for the scrolling area (the viewport() widget). It handles the event specified, and can be called by subclasses to provide reasonable default behavior.

Returns true to indicate to the event system that the event has been handled, and needs no further processing; otherwise returns false to indicate that the event should be propagated further.

You can reimplement this function in a subclass, but we recommend using one of the specialized event handlers instead.

Specialized handlers for viewport events are: paintEvent(), mousePressEvent(), mouseReleaseEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), wheelEvent(), dragEnterEvent(), dragMoveEvent(), dragLeaveEvent(), dropEvent(), contextMenuEvent(), and resizeEvent().

Reimplemented in QtGui.QHeaderView.

override void QtGui.QAbstractScrollArea.OnWheelEvent ( QWheelEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::wheelEvent().

This event handler can be reimplemented in a subclass to receive wheel events for the viewport() widget. The event is passed in e.

See also QWidget::wheelEvent().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QTextEdit, and QtGui.QPlainTextEdit.

new System.Collections.Generic.List<QWidget> QtGui.QAbstractScrollArea.ScrollBarWidgets

(

Qt.AlignmentFlag

alignment

)

Returns a list of the currently set scroll bar widgets. alignment can be any combination of the four location flags.

This function was introduced in Qt 4.2.

See also addScrollBarWidget().

virtual void QtGui.QAbstractScrollArea.ScrollContentsBy ( int  dx, int  dy  )

protectedvirtual

This virtual handler is called when the scroll bars are moved by dx, dy, and consequently the viewport's contents should be scrolled accordingly.

The default implementation simply calls update() on the entire viewport(), subclasses can reimplement this handler for optimization purposes, or - like QScrollArea - to move a contents widget. The parameters dx and dy are there for convenience, so that the class knows how much should be scrolled (useful e.g. when doing pixel-shifts). You may just as well ignore these values and scroll directly to the position the scroll bars indicate.

Calling this function in order to scroll programmatically is an error, use the scroll bars instead (e.g. by calling QScrollBar::setValue() directly).

Reimplemented in QtGui.QTreeView, QtGui.QTextEdit, QtGui.QTableView, QtGui.QScrollArea, QtGui.QPlainTextEdit, QtGui.QMdiArea, QtGui.QListView, QtGui.QHeaderView, QtGui.QGraphicsView, and QtGui.QColumnView.

new void QtGui.QAbstractScrollArea.SetupViewport ( QWidget  viewport )

protected

This slot is called by QAbstractScrollArea after setViewport(viewport) has been called. Reimplement this function in a subclass of QAbstractScrollArea to initialize the new viewport before it is used.

See also setViewport().

new void QtGui.QAbstractScrollArea.SetViewportMargins ( QMargins  margins )

protected

Sets margins around the scrolling area. This is useful for applications such as spreadsheets with "locked" rows and columns. The marginal space is is left blank; put widgets in the unused area.

By default all margins are zero.

This function was introduced in Qt 4.6.

new void QtGui.QAbstractScrollArea.SetViewportMargins ( int  left, int  top, int  right, int  bottom  )

protected

Sets the margins around the scrolling area to left, top, right and bottom. This is useful for applications such as spreadsheets with "locked" rows and columns. The marginal space is is left blank; put widgets in the unused area.

Note that this function is frequently called by QTreeView and QTableView, so margins must be implemented by QAbstractScrollArea subclasses. Also, if the subclasses are to be used in item views, they should not call this function.

By default all margins are zero.

override QSize QtGui.QAbstractScrollArea.SizeHint ( )

virtual

Reimplemented from QWidget::sizeHint().

Reimplemented from QtGui.QWidget.

Reimplemented in QtGui.QScrollArea, QtGui.QMdiArea, QtGui.QHeaderView, QtGui.QGraphicsView, and QtGui.QColumnView.

static string QtGui.QAbstractScrollArea.Tr ( string  s, string  c = null  )

static

static string QtGui.QAbstractScrollArea.Tr ( string  s, string  c, int  n  )

static

static string QtGui.QAbstractScrollArea.TrUtf8 ( string  s, string  c = null  )

static

static string QtGui.QAbstractScrollArea.TrUtf8 ( string  s, string  c, int  n  )

static

Property Documentation

override EventHandler<QEventArgs<QActionEvent> > QtGui.QAbstractScrollArea.ActionEvent

addremove

This event handler is called with the given event whenever the widget's actions are changed.

See also addAction(), insertAction(), removeAction(), actions(), and QActionEvent.

override EventHandler<QEventArgs<QEvent> > QtGui.QAbstractScrollArea.ChangeEvent

addremove

This event handler can be reimplemented to handle state changes.

The state being changed in this event can be retrieved through the event supplied.

Change events include: QEvent::ToolBarChange, QEvent::ActivationChange, QEvent::EnabledChange, QEvent::FontChange, QEvent::StyleChange, QEvent::PaletteChange, QEvent::WindowTitleChange, QEvent::IconTextChange, QEvent::ModifiedChange, QEvent::MouseTrackingChange, QEvent::ParentChange, QEvent::WindowStateChange, QEvent::LanguageChange, QEvent::LocaleChange, QEvent::LayoutDirectionChange.

override EventHandler<QEventArgs<QCloseEvent> > QtGui.QAbstractScrollArea.CloseEvent

addremove

This event handler is called with the given event when Qt receives a window close request for a top-level widget from the window system.

By default, the event is accepted and the widget is closed. You can reimplement this function to change the way the widget responds to window close requests. For example, you can prevent the window from closing by calling ignore() on all events.

Main window applications typically use reimplementations of this function to check whether the user's work has been saved and ask for permission before closing. For example, the Application Example uses a helper function to determine whether or not to close the window:

void MainWindow::closeEvent(QCloseEvent *event)

{

if (maybeSave()) {

writeSettings();

event->accept();

} else {

event->ignore();

}

}

See also event(), hide(), close(), QCloseEvent, and Application Example.

override EventHandler<QEventArgs<QContextMenuEvent> > QtGui.QAbstractScrollArea.ContextMenuEvent

addremove

This event handler, for event event, can be reimplemented in a subclass to receive widget context menu events.

The handler is called when the widget's contextMenuPolicy is Qt::DefaultContextMenu.

The default implementation ignores the context event. See the QContextMenuEvent documentation for more details.

See also event(), QContextMenuEvent, and customContextMenuRequested().

new QWidget QtGui.QAbstractScrollArea.CornerWidget

getset

Returns the widget in the corner between the two scroll bars.

By default, no corner widget is present.

This function was introduced in Qt 4.2.

Sets the widget in the corner between the two scroll bars to be widget.

You will probably also want to set at least one of the scroll bar modes to AlwaysOn.

Passing 0 shows no widget in the corner.

Any previous corner widget is hidden.

You may call setCornerWidget() with the same widget at different times.

All widgets set here will be deleted by the scroll area when it is destroyed unless you separately reparent the widget after setting some other corner widget (or 0).

Any newly set widget should have no current parent.

By default, no corner widget is present.

This function was introduced in Qt 4.2.

override EventHandler<QEventArgs<QDragEnterEvent> > QtGui.QAbstractScrollArea.DragEnterEvent

addremove

This event handler is called when a drag is in progress and the mouse enters this widget. The event is passed in the event parameter.

If the event is ignored, the widget won't receive any drag move events.

See the Drag-and-drop documentation for an overview of how to provide drag-and-drop in your application.

See also QDrag and QDragEnterEvent.

override EventHandler<QEventArgs<QDragLeaveEvent> > QtGui.QAbstractScrollArea.DragLeaveEvent

addremove

This event handler is called when a drag is in progress and the mouse leaves this widget. The event is passed in the event parameter.

See the Drag-and-drop documentation for an overview of how to provide drag-and-drop in your application.

See also QDrag and QDragLeaveEvent.

override EventHandler<QEventArgs<QDragMoveEvent> > QtGui.QAbstractScrollArea.DragMoveEvent

addremove

This event handler is called if a drag is in progress, and when any of the following conditions occur: the cursor enters this widget, the cursor moves within this widget, or a modifier key is pressed on the keyboard while this widget has the focus. The event is passed in the event parameter.

See the Drag-and-drop documentation for an overview of how to provide drag-and-drop in your application.

See also QDrag and QDragMoveEvent.

override EventHandler<QEventArgs<QDropEvent> > QtGui.QAbstractScrollArea.DropEvent

addremove

This event handler is called when the drag is dropped on this widget. The event is passed in the event parameter.

See the Drag-and-drop documentation for an overview of how to provide drag-and-drop in your application.

See also QDrag and QDropEvent.

new IQAbstractScrollAreaSignals QtGui.QAbstractScrollArea.Emit

getprotected

override EventHandler<QEventArgs<QEvent> > QtGui.QAbstractScrollArea.EnterEvent

addremove

This event handler can be reimplemented in a subclass to receive widget enter events which are passed in the event parameter.

An event is sent to the widget when the mouse cursor enters the widget.

See also leaveEvent(), mouseMoveEvent(), and event().

override EventHandler<QEventArgs<QFocusEvent> > QtGui.QAbstractScrollArea.FocusInEvent

addremove

This event handler can be reimplemented in a subclass to receive keyboard focus events (focus received) for the widget. The event is passed in the event parameter

A widget normally must setFocusPolicy() to something other than Qt::NoFocus in order to receive focus events. (Note that the application programmer can call setFocus() on any widget, even those that do not normally accept focus.)

The default implementation updates the widget (except for windows that do not specify a focusPolicy()).

See also focusOutEvent(), setFocusPolicy(), keyPressEvent(), keyReleaseEvent(), event(), and QFocusEvent.

override EventHandler<QEventArgs<QFocusEvent> > QtGui.QAbstractScrollArea.FocusOutEvent

addremove

This event handler can be reimplemented in a subclass to receive keyboard focus events (focus lost) for the widget. The events is passed in the event parameter.

A widget normally must setFocusPolicy() to something other than Qt::NoFocus in order to receive focus events. (Note that the application programmer can call setFocus() on any widget, even those that do not normally accept focus.)

The default implementation updates the widget (except for windows that do not specify a focusPolicy()).

See also focusInEvent(), setFocusPolicy(), keyPressEvent(), keyReleaseEvent(), event(), and QFocusEvent.

override EventHandler<QEventArgs<QHideEvent> > QtGui.QAbstractScrollArea.HideEvent

addremove

This event handler can be reimplemented in a subclass to receive widget hide events. The event is passed in the event parameter.

Hide events are sent to widgets immediately after they have been hidden.

Note: A widget receives spontaneous show and hide events when its mapping status is changed by the window system, e.g. a spontaneous hide event when the user minimizes the window, and a spontaneous show event when the window is restored again. After receiving a spontaneous hide event, a widget is still considered visible in the sense of isVisible().

See also visible, event(), and QHideEvent.

new QScrollBar QtGui.QAbstractScrollArea.HorizontalScrollBar

getset

Returns the horizontal scroll bar.

Replaces the existing horizontal scroll bar with scrollBar, and sets all the former scroll bar's slider properties on the new scroll bar. The former scroll bar is then deleted.

QAbstractScrollArea already provides horizontal and vertical scroll bars by default. You can call this function to replace the default horizontal scroll bar with your own custom scroll bar.

This function was introduced in Qt 4.2.

new Qt.ScrollBarPolicy QtGui.QAbstractScrollArea.HorizontalScrollBarPolicy

getset

This property holds the policy for the horizontal scroll bar.

The default policy is Qt::ScrollBarAsNeeded.

override EventHandler<QEventArgs<QInputMethodEvent> > QtGui.QAbstractScrollArea.InputMethodEvent

addremove

This event handler, for event event, can be reimplemented in a subclass to receive Input Method composition events. This handler is called when the state of the input method changes.

Note that when creating custom text editing widgets, the Qt::WA_InputMethodEnabled window attribute must be set explicitly (using the setAttribute() function) in order to receive input method events.

The default implementation calls event->ignore(), which rejects the Input Method event. See the QInputMethodEvent documentation for more details.

See also event() and QInputMethodEvent.

override EventHandler<QEventArgs<QKeyEvent> > QtGui.QAbstractScrollArea.KeyPressEvent

addremove

This event handler, for event event, can be reimplemented in a subclass to receive key press events for the widget.

A widget must call setFocusPolicy() to accept focus initially and have focus in order to receive a key press event.

If you reimplement this handler, it is very important that you call the base class implementation if you do not act upon the key.

The default implementation closes popup widgets if the user presses Esc. Otherwise the event is ignored, so that the widget's parent can interpret it.

Note that QKeyEvent starts with isAccepted() == true, so you do not need to call QKeyEvent::accept() - just do not call the base class implementation if you act upon the key.

See also keyReleaseEvent(), setFocusPolicy(), focusInEvent(), focusOutEvent(), event(), QKeyEvent, and Tetrix Example.

override EventHandler<QEventArgs<QKeyEvent> > QtGui.QAbstractScrollArea.KeyReleaseEvent

addremove

This event handler, for event event, can be reimplemented in a subclass to receive key release events for the widget.

A widget must accept focus initially and have focus in order to receive a key release event.

If you reimplement this handler, it is very important that you call the base class implementation if you do not act upon the key.

The default implementation ignores the event, so that the widget's parent can interpret it.

Note that QKeyEvent starts with isAccepted() == true, so you do not need to call QKeyEvent::accept() - just do not call the base class implementation if you act upon the key.

See also keyPressEvent(), QKeyEvent::ignore(), setFocusPolicy(), focusInEvent(), focusOutEvent(), event(), and QKeyEvent.

override EventHandler<QEventArgs<QEvent> > QtGui.QAbstractScrollArea.LeaveEvent

addremove

This event handler can be reimplemented in a subclass to receive widget leave events which are passed in the event parameter.

A leave event is sent to the widget when the mouse cursor leaves the widget.

See also enterEvent(), mouseMoveEvent(), and event().

override EventHandler<QEventArgs<QMouseEvent> > QtGui.QAbstractScrollArea.MouseDoubleClickEvent

addremove

This event handler, for event event, can be reimplemented in a subclass to receive mouse double click events for the widget.

The default implementation generates a normal mouse press event.

Note: The widget will also receive mouse press and mouse release events in addition to the double click event. It is up to the developer to ensure that the application interprets these events correctly.

See also mousePressEvent(), mouseReleaseEvent(), mouseMoveEvent(), event(), and QMouseEvent.

override EventHandler<QEventArgs<QMouseEvent> > QtGui.QAbstractScrollArea.MouseMoveEvent

addremove

This event handler, for event event, can be reimplemented in a subclass to receive mouse move events for the widget.

If mouse tracking is switched off, mouse move events only occur if a mouse button is pressed while the mouse is being moved. If mouse tracking is switched on, mouse move events occur even if no mouse button is pressed.

QMouseEvent::pos() reports the position of the mouse cursor, relative to this widget. For press and release events, the position is usually the same as the position of the last mouse move event, but it might be different if the user's hand shakes. This is a feature of the underlying window system, not Qt.

If you want to show a tooltip immediately, while the mouse is moving (e.g., to get the mouse coordinates with QMouseEvent::pos() and show them as a tooltip), you must first enable mouse tracking as described above. Then, to ensure that the tooltip is updated immediately, you must call QToolTip::showText() instead of setToolTip() in your implementation of mouseMoveEvent().

See also setMouseTracking(), mousePressEvent(), mouseReleaseEvent(), mouseDoubleClickEvent(), event(), QMouseEvent, and Scribble Example.

override EventHandler<QEventArgs<QMouseEvent> > QtGui.QAbstractScrollArea.MousePressEvent

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This event handler, for event event, can be reimplemented in a subclass to receive mouse press events for the widget.

If you create new widgets in the mousePressEvent() the mouseReleaseEvent() may not end up where you expect, depending on the underlying window system (or X11 window manager), the widgets' location and maybe more.

The default implementation implements the closing of popup widgets when you click outside the window. For other widget types it does nothing.

See also mouseReleaseEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), event(), QMouseEvent, and Scribble Example.

override EventHandler<QEventArgs<QMouseEvent> > QtGui.QAbstractScrollArea.MouseReleaseEvent

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This event handler, for event event, can be reimplemented in a subclass to receive mouse release events for the widget.

See also mousePressEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), event(), QMouseEvent, and Scribble Example.

override EventHandler<QEventArgs<QMoveEvent> > QtGui.QAbstractScrollArea.MoveEvent

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This event handler can be reimplemented in a subclass to receive widget move events which are passed in the event parameter. When the widget receives this event, it is already at the new position.

The old position is accessible through QMoveEvent::oldPos().

See also resizeEvent(), event(), move(), and QMoveEvent.

override EventHandler<QEventArgs<QPaintEvent> > QtGui.QAbstractScrollArea.PaintEvent

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This event handler can be reimplemented in a subclass to receive paint events passed in event.

A paint event is a request to repaint all or part of a widget. It can happen for one of the following reasons:

repaint() or update() was invoked,

the widget was obscured and has now been uncovered, or

many other reasons.

Many widgets can simply repaint their entire surface when asked to, but some slow widgets need to optimize by painting only the requested region: QPaintEvent::region(). This speed optimization does not change the result, as painting is clipped to that region during event processing. QListView and QTableView do this, for example.

Qt also tries to speed up painting by merging multiple paint events into one. When update() is called several times or the window system sends several paint events, Qt merges these events into one event with a larger region (see QRegion::united()). The repaint() function does not permit this optimization, so we suggest using update() whenever possible.

When the paint event occurs, the update region has normally been erased, so you are painting on the widget's background.

The background can be set using setBackgroundRole() and setPalette().

Since Qt 4.0, QWidget automatically double-buffers its painting, so there is no need to write double-buffering code in paintEvent() to avoid flicker.

Note for the X11 platform: It is possible to toggle global double buffering by calling qt_x11_set_global_double_buffer(). For example,

...

extern void qt_x11_set_global_double_buffer(bool);

qt_x11_set_global_double_buffer(false);

...

Note: Generally, you should refrain from calling update() or repaint() inside a paintEvent(). For example, calling update() or repaint() on children inside a paintevent() results in undefined behavior; the child may or may not get a paint event.

Warning: If you are using a custom paint engine without Qt's backingstore, Qt::WA_PaintOnScreen must be set. Otherwise, QWidget::paintEngine() will never be called; the backingstore will be used instead.

See also event(), repaint(), update(), QPainter, QPixmap, QPaintEvent, and Analog Clock Example.

override EventHandler<QEventArgs<QResizeEvent> > QtGui.QAbstractScrollArea.ResizeEvent

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This event handler can be reimplemented in a subclass to receive widget resize events which are passed in the event parameter. When resizeEvent() is called, the widget already has its new geometry. The old size is accessible through QResizeEvent::oldSize().

The widget will be erased and receive a paint event immediately after processing the resize event. No drawing need be (or should be) done inside this handler.

See also moveEvent(), event(), resize(), QResizeEvent, paintEvent(), and Scribble Example.

override EventHandler<QEventArgs<QShowEvent> > QtGui.QAbstractScrollArea.ShowEvent

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This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter.

Non-spontaneous show events are sent to widgets immediately before they are shown. The spontaneous show events of windows are delivered afterwards.

Note: A widget receives spontaneous show and hide events when its mapping status is changed by the window system, e.g. a spontaneous hide event when the user minimizes the window, and a spontaneous show event when the window is restored again. After receiving a spontaneous hide event, a widget is still considered visible in the sense of isVisible().

See also visible, event(), and QShowEvent.

new QMetaObject QtGui.QAbstractScrollArea.StaticMetaObject

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override EventHandler<QEventArgs<QTabletEvent> > QtGui.QAbstractScrollArea.TabletEvent

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This event handler, for event event, can be reimplemented in a subclass to receive tablet events for the widget.

If you reimplement this handler, it is very important that you ignore() the event if you do not handle it, so that the widget's parent can interpret it.

The default implementation ignores the event.

See also QTabletEvent::ignore(), QTabletEvent::accept(), event(), and QTabletEvent.

new QScrollBar QtGui.QAbstractScrollArea.VerticalScrollBar

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Returns the vertical scroll bar.

Replaces the existing vertical scroll bar with scrollBar, and sets all the former scroll bar's slider properties on the new scroll bar. The former scroll bar is then deleted.

QAbstractScrollArea already provides vertical and horizontal scroll bars by default. You can call this function to replace the default vertical scroll bar with your own custom scroll bar.

This function was introduced in Qt 4.2.

new Qt.ScrollBarPolicy QtGui.QAbstractScrollArea.VerticalScrollBarPolicy

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This property holds the policy for the vertical scroll bar.

The default policy is Qt::ScrollBarAsNeeded.

new QWidget QtGui.QAbstractScrollArea.Viewport

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Returns the viewport widget.

Use the QScrollArea::widget() function to retrieve the contents of the viewport widget.

Sets the viewport to be the given widget. The QAbstractScrollArea will take ownership of the given widget.

If widget is 0, QAbstractScrollArea will assign a new QWidget instance for the viewport.

This function was introduced in Qt 4.2.

virtual EventHandler<QEventArgs<QEvent> > QtGui.QAbstractScrollArea.ViewportEvent

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The main event handler for the scrolling area (the viewport() widget). It handles the event specified, and can be called by subclasses to provide reasonable default behavior.

Returns true to indicate to the event system that the event has been handled, and needs no further processing; otherwise returns false to indicate that the event should be propagated further.

You can reimplement this function in a subclass, but we recommend using one of the specialized event handlers instead.

Specialized handlers for viewport events are: paintEvent(), mousePressEvent(), mouseReleaseEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), wheelEvent(), dragEnterEvent(), dragMoveEvent(), dragLeaveEvent(), dropEvent(), contextMenuEvent(), and resizeEvent().

override EventHandler<QEventArgs<QWheelEvent> > QtGui.QAbstractScrollArea.WheelEvent

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This event handler, for event event, can be reimplemented in a subclass to receive wheel events for the widget.

If you reimplement this handler, it is very important that you ignore() the event if you do not handle it, so that the widget's parent can interpret it.

The default implementation ignores the event.

See also QWheelEvent::ignore(), QWheelEvent::accept(), event(), and QWheelEvent.