QtOpenGL.QGLWidget Class Reference

The QGLWidget class is a widget for rendering OpenGL graphics. More...

Inheritance diagram for QtOpenGL.QGLWidget:

Collaboration diagram for QtOpenGL.QGLWidget:

Public Member Functions
	QGLWidget (QGLContext context, QWidget parent=null, QGLWidget shareWidget=null, Qt.WindowType f=0)
	QGLWidget (QGLFormat format, QWidget parent=null, QGLWidget shareWidget=null, Qt.WindowType f=0)
	QGLWidget (QWidget parent=null, QGLWidget shareWidget=null, Qt.WindowType f=0)
override void	CreateProxy ()
new uint	BindTexture (QImage image)
new uint	BindTexture (QPixmap pixmap)
new uint	BindTexture (QImage image, int target)
new uint	BindTexture (QPixmap pixmap, int target)
new uint	BindTexture (QImage image, int target, int format)
new uint	BindTexture (QPixmap pixmap, int target, int format)
new uint	BindTexture (QImage image, int target, int format, QGLContext.BindOption options)
new uint	BindTexture (QPixmap pixmap, int target, int format, QGLContext.BindOption options)
new uint	BindTexture (string fileName)
new void	DeleteTexture (uint tx_id)
new void	DoneCurrent ()
new bool	DoubleBuffer ()
new void	DrawTexture (QRectF target, uint textureId)
new void	DrawTexture (QPointF point, uint textureId)
new void	DrawTexture (QRectF target, uint textureId, int textureTarget)
new void	DrawTexture (QPointF point, uint textureId, int textureTarget)
override bool	OnEvent (QEvent arg1)
new QImage	GrabFrameBuffer (bool withAlpha=false)
new bool	IsSharing ()
new bool	IsValid ()
new void	MakeCurrent ()
new void	MakeOverlayCurrent ()
new QGLContext	OverlayContext ()
override QPaintEngine	PaintEngine ()
new void	QglClearColor (QColor c)
new void	QglColor (QColor c)
new QPixmap	RenderPixmap (int w=0, int h=0, bool useContext=false)
new void	RenderText (int x, int y, string str)
new void	RenderText (int x, int y, string str, QFont fnt, int listBase=2000)
new void	RenderText (double x, double y, double z, string str)
new void	RenderText (double x, double y, double z, string str, QFont fnt, int listBase=2000)
new void	SetContext (QGLContext context, QGLContext shareContext=null, bool deleteOldContext=true)
new void	SetMouseTracking (bool enable)
new void	SwapBuffers ()
virtual void	UpdateGL ()
virtual void	UpdateOverlayGL ()
new void	Dispose ()
Public Member Functions inherited from QtGui.QWidget
	QWidget (QWidget parent=null, Qt.WindowType f=0)
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 ()
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)
virtual QSize	MinimumSizeHint ()
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)
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 ()
virtual QSize	SizeHint ()
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 QImage	ConvertToGLFormat (QImage img)
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
	QGLWidget (System.Type dummy)
new int	FontDisplayListBase (QFont fnt, int listBase=2000)
virtual void	GlDraw ()
virtual void	GlInit ()
virtual void	InitializeGL ()
virtual void	InitializeOverlayGL ()
override void	OnPaintEvent (QPaintEvent arg1)
virtual void	PaintGL ()
virtual void	PaintOverlayGL ()
override void	OnResizeEvent (QResizeEvent arg1)
virtual void	ResizeGL (int w, int h)
virtual void	ResizeOverlayGL (int w, int h)
Protected Member Functions inherited from QtGui.QWidget
	QWidget (System.Type dummy)
virtual void	OnActionEvent (QActionEvent arg1)
virtual void	OnChangeEvent (QEvent arg1)
virtual void	OnCloseEvent (QCloseEvent arg1)
virtual void	OnContextMenuEvent (QContextMenuEvent 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	OnDragEnterEvent (QDragEnterEvent arg1)
virtual void	OnDragLeaveEvent (QDragLeaveEvent arg1)
virtual void	OnDragMoveEvent (QDragMoveEvent arg1)
virtual void	OnDropEvent (QDropEvent arg1)
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	OnKeyPressEvent (QKeyEvent arg1)
virtual void	OnKeyReleaseEvent (QKeyEvent arg1)
virtual void	LanguageChange ()
virtual void	OnLeaveEvent (QEvent arg1)
virtual int	Metric (QPaintDevice.PaintDeviceMetric arg1)
virtual void	OnMouseDoubleClickEvent (QMouseEvent arg1)
virtual void	OnMouseMoveEvent (QMouseEvent arg1)
virtual void	OnMousePressEvent (QMouseEvent arg1)
virtual void	OnMouseReleaseEvent (QMouseEvent 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	OnWheelEvent (QWheelEvent arg1)
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
new bool	AutoBufferSwap [get, set]
new QGLColormap	Colormap [get, set]
new QGLFormat	Format [get, set]
new QGLContext	Context [get]
static new QMetaObject	StaticMetaObject [get]
new IQGLWidgetSignals	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.QWidget
enum	RenderFlag { DrawChildren = 2, DrawWindowBackground = 1, IgnoreMask = 4 }
	More...
Protected Attributes inherited from QtCore.QObject
object	Q_EMIT = null
SmokeInvocation	interceptor
readonly List< QEventHandler >	eventFilters = new List<QEventHandler>()

Detailed Description

The QGLWidget class is a widget for rendering OpenGL graphics.

QGLWidget provides functionality for displaying OpenGL graphics integrated into a Qt application. It is very simple to use. You inherit from it and use the subclass like any other QWidget, except that you have the choice between using QPainter and standard OpenGL rendering commands.

QGLWidget provides three convenient virtual functions that you can reimplement in your subclass to perform the typical OpenGL tasks:

paintGL() - Renders the OpenGL scene. Gets called whenever the widget needs to be updated.

resizeGL() - Sets up the OpenGL viewport, projection, etc. Gets called whenever the widget has been resized (and also when it is shown for the first time because all newly created widgets get a resize event automatically).

initializeGL() - Sets up the OpenGL rendering context, defines display lists, etc. Gets called once before the first time resizeGL() or paintGL() is called.

Here is a rough outline of how a QGLWidget subclass might look:

class MyGLDrawer : public QGLWidget

{

Q_OBJECT // must include this if you use Qt signals/slots

public:

MyGLDrawer(QWidget *parent)

: QGLWidget(parent) {}

protected:

void initializeGL()

{

// Set up the rendering context, define display lists etc.:

...

glClearColor(0.0, 0.0, 0.0, 0.0);

glEnable(GL_DEPTH_TEST);

...

}

void resizeGL(int w, int h)

{

// setup viewport, projection etc.:

glViewport(0, 0, (GLint)w, (GLint)h);

...

glFrustum(...);

...

}

void paintGL()

{

// draw the scene:

...

glRotatef(...);

glMaterialfv(...);

glBegin(GL_QUADS);

glVertex3f(...);

glVertex3f(...);

...

glEnd();

...

}

};

If you need to trigger a repaint from places other than paintGL() (a typical example is when using timers to animate scenes), you should call the widget's updateGL() function.

Your widget's OpenGL rendering context is made current when paintGL(), resizeGL(), or initializeGL() is called. If you need to call the standard OpenGL API functions from other places (e.g. in your widget's constructor or in your own paint functions), you must call makeCurrent() first.

QGLWidget provides functions for requesting a new display format and you can also create widgets with customized rendering contexts.

You can also share OpenGL display lists between QGLWidget objects (see the documentation of the QGLWidget constructors for details).

Note that under Windows, the QGLContext belonging to a QGLWidget has to be recreated when the QGLWidget is reparented. This is necessary due to limitations on the Windows platform. This will most likely cause problems for users that have subclassed and installed their own QGLContext on a QGLWidget. It is possible to work around this issue by putting the QGLWidget inside a dummy widget and then reparenting the dummy widget, instead of the QGLWidget. This will side-step the issue altogether, and is what we recommend for users that need this kind of functionality.

On Mac OS X, when Qt is built with Cocoa support, a QGLWidget can't have any sibling widgets placed ontop of itself. This is due to limitations in the Cocoa API and is not supported by Apple.

Overlays

The QGLWidget creates a GL overlay context in addition to the normal context if overlays are supported by the underlying system.

If you want to use overlays, you specify it in the format. (Note: Overlay must be requested in the format passed to the QGLWidget constructor.) Your GL widget should also implement some or all of these virtual methods:

paintOverlayGL()

resizeOverlayGL()

initializeOverlayGL()

These methods work in the same way as the normal paintGL() etc. functions, except that they will be called when the overlay context is made current. You can explicitly make the overlay context current by using makeOverlayCurrent(), and you can access the overlay context directly (e.g. to ask for its transparent color) by calling overlayContext().

On X servers in which the default visual is in an overlay plane, non-GL Qt windows can also be used for overlays.

Painting Techniques

As described above, subclass QGLWidget to render pure 3D content in the following way:

Reimplement the QGLWidget::initializeGL() and QGLWidget::resizeGL() to set up the OpenGL state and provide a perspective transformation.

Reimplement QGLWidget::paintGL() to paint the 3D scene, calling only OpenGL functions to draw on the widget.

It is also possible to draw 2D graphics onto a QGLWidget subclass, it is necessary to reimplement QGLWidget::paintEvent() and do the following:

Construct a QPainter object.

Initialize it for use on the widget with the QPainter::begin() function.

Draw primitives using QPainter's member functions.

Call QPainter::end() to finish painting.

Overpainting 2D content on top of 3D content takes a little more effort. One approach to doing this is shown in the Overpainting example.

Threading

As of Qt version 4.8, support for doing threaded GL rendering has been improved. There are three scenarios that we currently support:

1. Buffer swapping in a thread.Swapping buffers in a double buffered context may be a synchronous, locking call that may be a costly operation in some GL implementations. Especially so on embedded devices. It's not optimal to have the CPU idling while the GPU is doing a buffer swap. In those cases it is possible to do the rendering in the main thread and do the actual buffer swap in a separate thread. This can be done with the following steps:

1. Call doneCurrent() in the main thread when the rendering is finished.

2. Notify the swapping thread that it can grab the context.

3. Make the rendering context current in the swapping thread with makeCurrent() and then call swapBuffers().

4. Call doneCurrent() in the swapping thread and notify the main thread that swapping is done.

Doing this will free up the main thread so that it can continue with, for example, handling UI events or network requests. Even if there is a context swap involved, it may be preferable compared to having the main thread wait while the GPU finishes the swap operation. Note that this is highly implementation dependent.

2. Texture uploading in a thread.Doing texture uploads in a thread may be very useful for applications handling large amounts of images that needs to be displayed, like for instance a photo gallery application. This is supported in Qt through the existing bindTexture() API. A simple way of doing this is to create two sharing QGLWidgets. One is made current in the main GUI thread, while the other is made current in the texture upload thread. The widget in the uploading thread is never shown, it is only used for sharing textures with the main thread. For each texture that is bound via bindTexture(), notify the main thread so that it can start using the texture.

3. Using QPainter to draw into a QGLWidget in a thread.In Qt 4.8, it is possible to draw into a QGLWidget using a QPainter in a separate thread. Note that this is also possible for QGLPixelBuffers and QGLFramebufferObjects. Since this is only supported in the GL 2 paint engine, OpenGL 2.0 or OpenGL ES 2.0 is required.

QGLWidgets can only be created in the main GUI thread. This means a call to doneCurrent() is necessary to release the GL context from the main thread, before the widget can be drawn into by another thread. Also, the main GUI thread will dispatch resize and paint events to a QGLWidget when the widget is resized, or parts of it becomes exposed or needs redrawing. It is therefore necessary to handle those events because the default implementations inside QGLWidget will try to make the QGLWidget's context current, which again will interfere with any threads rendering into the widget. Reimplement QGLWidget::paintEvent() and QGLWidget::resizeEvent() to notify the rendering thread that a resize or update is necessary, and be careful not to call the base class implementation. If you are rendering an animation, it might not be necessary to handle the paint event at all since the rendering thread is doing regular updates. Then it would be enough to reimplement QGLWidget::paintEvent() to do nothing.

As a general rule when doing threaded rendering: be aware that binding and releasing contexts in different threads have to be synchronized by the user. A GL rendering context can only be current in one thread at any time. If you try to open a QPainter on a QGLWidget and the widget's rendering context is current in another thread, it will fail.

Note that under X11 it is necessary to set the Qt::AA_X11InitThreads application attribute to make the X11 library and GLX calls thread safe, otherwise the above scenarios will fail.

In addition to this, rendering using raw GL calls in a separate thread is supported.

OpenGL is a trademark of Silicon Graphics, Inc. in the United States and other countries.

See also QGLPixelBuffer, Hello GL Example, 2D Painting Example, Overpainting Example, and Grabber Example.

Constructor & Destructor Documentation

QtOpenGL.QGLWidget.QGLWidget ( System.Type  dummy )

protected

QtOpenGL.QGLWidget.QGLWidget	(	QGLContext	context,
		QWidget	parent = null,
		QGLWidget	shareWidget = null,
		Qt.WindowType	f = 0
	)

Constructs an OpenGL widget with a parent widget.

The default format is used. The widget will be invalid if the system has no OpenGL support.

The parent and widget flag, f, arguments are passed to the QWidget constructor.

If shareWidget is a valid QGLWidget, this widget will share OpenGL display lists and texture objects with shareWidget. But if shareWidget and this widget have different formats, sharing might not be possible. You can check whether sharing is in effect by calling isSharing().

The initialization of OpenGL rendering state, etc. should be done by overriding the initializeGL() function, rather than in the constructor of your QGLWidget subclass.

See also QGLFormat::defaultFormat() and Textures Example.

QtOpenGL.QGLWidget.QGLWidget	(	QGLFormat	format,
		QWidget	parent = null,
		QGLWidget	shareWidget = null,
		Qt.WindowType	f = 0
	)

Constructs an OpenGL widget with a parent widget.

The default format is used. The widget will be invalid if the system has no OpenGL support.

The parent and widget flag, f, arguments are passed to the QWidget constructor.

If shareWidget is a valid QGLWidget, this widget will share OpenGL display lists and texture objects with shareWidget. But if shareWidget and this widget have different formats, sharing might not be possible. You can check whether sharing is in effect by calling isSharing().

The initialization of OpenGL rendering state, etc. should be done by overriding the initializeGL() function, rather than in the constructor of your QGLWidget subclass.

See also QGLFormat::defaultFormat() and Textures Example.

QtOpenGL.QGLWidget.QGLWidget	(	QWidget	parent = null,
		QGLWidget	shareWidget = null,
		Qt.WindowType	f = 0
	)

Constructs an OpenGL widget with a parent widget.

The default format is used. The widget will be invalid if the system has no OpenGL support.

The parent and widget flag, f, arguments are passed to the QWidget constructor.

If shareWidget is a valid QGLWidget, this widget will share OpenGL display lists and texture objects with shareWidget. But if shareWidget and this widget have different formats, sharing might not be possible. You can check whether sharing is in effect by calling isSharing().

The initialization of OpenGL rendering state, etc. should be done by overriding the initializeGL() function, rather than in the constructor of your QGLWidget subclass.

See also QGLFormat::defaultFormat() and Textures Example.

Member Function Documentation

new uint QtOpenGL.QGLWidget.BindTexture

(

QImage

image

)

Calls QGLContext:::bindTexture(image, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture

(

QPixmap

pixmap

)

Calls QGLContext:::bindTexture(image, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture	(	QImage	image,
		int	target
	)

Calls QGLContext:::bindTexture(image, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture	(	QPixmap	pixmap,
		int	target
	)

Calls QGLContext:::bindTexture(image, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture	(	QImage	image,
		int	target,
		int	format
	)

Calls QGLContext:::bindTexture(image, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture	(	QPixmap	pixmap,
		int	target,
		int	format
	)

Calls QGLContext:::bindTexture(pixmap, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture	(	QImage	image,
		int	target,
		int	format,
		QGLContext.BindOption	options
	)

Calls QGLContext:::bindTexture(image, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture	(	QPixmap	pixmap,
		int	target,
		int	format,
		QGLContext.BindOption	options
	)

Calls QGLContext:::bindTexture(image, target, format) on the currently set context.

See also deleteTexture().

new uint QtOpenGL.QGLWidget.BindTexture

(

string

fileName

)

This is an overloaded function.

Calls QGLContext::bindTexture(fileName) on the currently set context.

See also deleteTexture().

static QImage QtOpenGL.QGLWidget.ConvertToGLFormat ( QImage  img )

static

Converts the image img into the unnamed format expected by OpenGL functions such as glTexImage2D(). The returned image is not usable as a QImage, but QImage::width(), QImage::height() and QImage::bits() may be used with OpenGL. The GL format used is GL_RGBA.

override void QtOpenGL.QGLWidget.CreateProxy ( )

virtual

Reimplemented from QtGui.QWidget.

new void QtOpenGL.QGLWidget.DeleteTexture

(

uint

tx_id

)

Calls QGLContext::deleteTexture(id) on the currently set context.

See also bindTexture().

new void QtOpenGL.QGLWidget.Dispose

(

)

new void QtOpenGL.QGLWidget.DoneCurrent

(

)

Makes no GL context the current context. Normally, you do not need to call this function; QGLContext calls it as necessary. However, it may be useful in multithreaded environments.

new bool QtOpenGL.QGLWidget.DoubleBuffer

(

)

Returns true if the contained GL rendering context has double buffering; otherwise returns false.

See also QGLFormat::doubleBuffer().

new void QtOpenGL.QGLWidget.DrawTexture	(	QRectF	target,
		uint	textureId
	)

Calls the corresponding QGLContext::drawTexture() with target, textureId, and textureTarget for this widget's context.

This function was introduced in Qt 4.4.

new void QtOpenGL.QGLWidget.DrawTexture	(	QPointF	point,
		uint	textureId
	)

Calls the corresponding QGLContext::drawTexture() with target, textureId, and textureTarget for this widget's context.

This function was introduced in Qt 4.4.

new void QtOpenGL.QGLWidget.DrawTexture	(	QRectF	target,
		uint	textureId,
		int	textureTarget
	)

Calls the corresponding QGLContext::drawTexture() with target, textureId, and textureTarget for this widget's context.

This function was introduced in Qt 4.4.

new void QtOpenGL.QGLWidget.DrawTexture	(	QPointF	point,
		uint	textureId,
		int	textureTarget
	)

Calls the corresponding QGLContext::drawTexture() with point, textureId, and textureTarget for this widget's context.

This function was introduced in Qt 4.4.

new int QtOpenGL.QGLWidget.FontDisplayListBase ( QFont  fnt, int  listBase = 2000  )

protected

Returns the value of the first display list that is generated for the characters in the given font. listBase indicates the base value used when generating the display lists for the font. The default value is 2000.

Note: This function is not supported on OpenGL/ES systems.

virtual void QtOpenGL.QGLWidget.GlDraw ( )

protectedvirtual

Executes the virtual function paintGL().

The widget's rendering context will become the current context and initializeGL() will be called if it hasn't already been called.

virtual void QtOpenGL.QGLWidget.GlInit ( )

protectedvirtual

Initializes OpenGL for this widget's context. Calls the virtual function initializeGL().

new QImage QtOpenGL.QGLWidget.GrabFrameBuffer

(

bool

withAlpha = false

)

Returns an image of the frame buffer. If withAlpha is true the alpha channel is included.

Depending on your hardware, you can explicitly select which color buffer to grab with a glReadBuffer() call before calling this function.

virtual void QtOpenGL.QGLWidget.InitializeGL ( )

protectedvirtual

This virtual function is called once before the first call to paintGL() or resizeGL(), and then once whenever the widget has been assigned a new QGLContext. Reimplement it in a subclass.

This function should set up any required OpenGL context rendering flags, defining display lists, etc.

There is no need to call makeCurrent() because this has already been done when this function is called.

virtual void QtOpenGL.QGLWidget.InitializeOverlayGL ( )

protectedvirtual

This virtual function is used in the same manner as initializeGL() except that it operates on the widget's overlay context instead of the widget's main context. This means that initializeOverlayGL() is called once before the first call to paintOverlayGL() or resizeOverlayGL(). Reimplement it in a subclass.

This function should set up any required OpenGL context rendering flags, defining display lists, etc. for the overlay context.

There is no need to call makeOverlayCurrent() because this has already been done when this function is called.

new bool QtOpenGL.QGLWidget.IsSharing

(

)

Returns true if this widget's GL context is shared with another GL context, otherwise false is returned. Context sharing might not be possible if the widgets use different formats.

See also format().

new bool QtOpenGL.QGLWidget.IsValid

(

)

Returns true if the widget has a valid GL rendering context; otherwise returns false. A widget will be invalid if the system has no OpenGL support.

new void QtOpenGL.QGLWidget.MakeCurrent

(

)

Makes this widget the current widget for OpenGL operations, i.e. makes the widget's rendering context the current OpenGL rendering context.

new void QtOpenGL.QGLWidget.MakeOverlayCurrent

(

)

Makes the overlay context of this widget current. Use this if you need to issue OpenGL commands to the overlay context outside of initializeOverlayGL(), resizeOverlayGL(), and paintOverlayGL().

Does nothing if this widget has no overlay.

See also makeCurrent().

override bool QtOpenGL.QGLWidget.OnEvent ( QEvent  arg1 )

virtual

Reimplemented from QObject::event().

Reimplemented from QtGui.QWidget.

override void QtOpenGL.QGLWidget.OnPaintEvent ( QPaintEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::paintEvent().

Handles paint events passed in the event parameter. Will cause the virtual paintGL() function to be called.

The widget's rendering context will become the current context and initializeGL() will be called if it hasn't already been called.

Reimplemented from QtGui.QWidget.

override void QtOpenGL.QGLWidget.OnResizeEvent ( QResizeEvent  arg1 )

protectedvirtual

Reimplemented from QWidget::resizeEvent().

Handles resize events that are passed in the event parameter. Calls the virtual function resizeGL().

Reimplemented from QtGui.QWidget.

new QGLContext QtOpenGL.QGLWidget.OverlayContext

(

)

Returns the overlay context of this widget, or 0 if this widget has no overlay.

See also context().

override QPaintEngine QtOpenGL.QGLWidget.PaintEngine ( )

virtual

Reimplemented from QPaintDevice::paintEngine().

Returns the widget's paint engine.

Note that this function should not be called explicitly by the user, since it's meant for reimplementation purposes only. The function is called by Qt internally, and the default implementation may not always return a valid pointer.

Reimplemented from QtGui.QWidget.

virtual void QtOpenGL.QGLWidget.PaintGL ( )

protectedvirtual

This virtual function is called whenever the widget needs to be painted. Reimplement it in a subclass.

There is no need to call makeCurrent() because this has already been done when this function is called.

virtual void QtOpenGL.QGLWidget.PaintOverlayGL ( )

protectedvirtual

This virtual function is used in the same manner as paintGL() except that it operates on the widget's overlay context instead of the widget's main context. This means that paintOverlayGL() is called whenever the widget's overlay needs to be painted. Reimplement it in a subclass.

There is no need to call makeOverlayCurrent() because this has already been done when this function is called.

new void QtOpenGL.QGLWidget.QglClearColor

(

QColor

c

)

Convenience function for specifying the clearing color to OpenGL. Calls glClearColor (in RGBA mode) or glClearIndex (in color-index mode) with the color c. Applies to this widgets GL context.

See also qglColor(), QGLContext::currentContext(), and QColor.

new void QtOpenGL.QGLWidget.QglColor

(

QColor

c

)

Convenience function for specifying a drawing color to OpenGL. Calls glColor4 (in RGBA mode) or glIndex (in color-index mode) with the color c. Applies to this widgets GL context.

Note: This function is not supported on OpenGL/ES 2.0 systems.

See also qglClearColor(), QGLContext::currentContext(), and QColor.

new QPixmap QtOpenGL.QGLWidget.RenderPixmap	(	int	w = 0,
		int	h = 0,
		bool	useContext = false
	)

Renders the current scene on a pixmap and returns the pixmap.

You can use this method on both visible and invisible QGLWidget objects.

This method will create a pixmap and a temporary QGLContext to render on the pixmap. It will then call initializeGL(), resizeGL(), and paintGL() on this context. Finally, the widget's original GL context is restored.

The size of the pixmap will be w pixels wide and h pixels high unless one of these parameters is 0 (the default), in which case the pixmap will have the same size as the widget.

If useContext is true, this method will try to be more efficient by using the existing GL context to render the pixmap. The default is false. Only use true if you understand the risks. Note that under Windows a temporary context has to be created and usage of the useContext parameter is not supported.

Overlays are not rendered onto the pixmap.

If the GL rendering context and the desktop have different bit depths, the result will most likely look surprising.

Note that the creation of display lists, modifications of the view frustum etc. should be done from within initializeGL(). If this is not done, the temporary QGLContext will not be initialized properly, and the rendered pixmap may be incomplete/corrupted.

new void QtOpenGL.QGLWidget.RenderText	(	int	x,
		int	y,
		string	str
	)

Renders the string str into the GL context of this widget.

x and y are specified in window coordinates, with the origin in the upper left-hand corner of the window. If font is not specified, the currently set application font will be used to render the string. To change the color of the rendered text you can use the glColor() call (or the qglColor() convenience function), just before the renderText() call.

The listBase parameter is obsolete and will be removed in a future version of Qt.

Note: This function clears the stencil buffer.

Note: This function is not supported on OpenGL/ES systems.

Note: This function temporarily disables depth-testing when the text is drawn.

Note: This function can only be used inside a QPainter::beginNativePainting()/QPainter::endNativePainting() block if the default OpenGL paint engine is QPaintEngine::OpenGL. To make QPaintEngine::OpenGL the default GL engine, call QGL::setPreferredPaintEngine(QPaintEngine::OpenGL) before the QApplication constructor.

Overpaint with QPainter::drawText() instead.

new void QtOpenGL.QGLWidget.RenderText	(	int	x,
		int	y,
		string	str,
		QFont	fnt,
		int	listBase = 2000
	)

Renders the string str into the GL context of this widget.

x and y are specified in window coordinates, with the origin in the upper left-hand corner of the window. If font is not specified, the currently set application font will be used to render the string. To change the color of the rendered text you can use the glColor() call (or the qglColor() convenience function), just before the renderText() call.

The listBase parameter is obsolete and will be removed in a future version of Qt.

Note: This function clears the stencil buffer.

Note: This function is not supported on OpenGL/ES systems.

Note: This function temporarily disables depth-testing when the text is drawn.

Note: This function can only be used inside a QPainter::beginNativePainting()/QPainter::endNativePainting() block if the default OpenGL paint engine is QPaintEngine::OpenGL. To make QPaintEngine::OpenGL the default GL engine, call QGL::setPreferredPaintEngine(QPaintEngine::OpenGL) before the QApplication constructor.

Overpaint with QPainter::drawText() instead.

new void QtOpenGL.QGLWidget.RenderText	(	double	x,
		double	y,
		double	z,
		string	str
	)

Renders the string str into the GL context of this widget.

x and y are specified in window coordinates, with the origin in the upper left-hand corner of the window. If font is not specified, the currently set application font will be used to render the string. To change the color of the rendered text you can use the glColor() call (or the qglColor() convenience function), just before the renderText() call.

The listBase parameter is obsolete and will be removed in a future version of Qt.

Note: This function clears the stencil buffer.

Note: This function is not supported on OpenGL/ES systems.

Note: This function temporarily disables depth-testing when the text is drawn.

Note: This function can only be used inside a QPainter::beginNativePainting()/QPainter::endNativePainting() block if the default OpenGL paint engine is QPaintEngine::OpenGL. To make QPaintEngine::OpenGL the default GL engine, call QGL::setPreferredPaintEngine(QPaintEngine::OpenGL) before the QApplication constructor.

Overpaint with QPainter::drawText() instead.

new void QtOpenGL.QGLWidget.RenderText	(	double	x,
		double	y,
		double	z,
		string	str,
		QFont	fnt,
		int	listBase = 2000
	)

Renders the string str into the GL context of this widget.

x and y are specified in window coordinates, with the origin in the upper left-hand corner of the window. If font is not specified, the currently set application font will be used to render the string. To change the color of the rendered text you can use the glColor() call (or the qglColor() convenience function), just before the renderText() call.

The listBase parameter is obsolete and will be removed in a future version of Qt.

Note: This function clears the stencil buffer.

Note: This function is not supported on OpenGL/ES systems.

Note: This function temporarily disables depth-testing when the text is drawn.

Note: This function can only be used inside a QPainter::beginNativePainting()/QPainter::endNativePainting() block if the default OpenGL paint engine is QPaintEngine::OpenGL. To make QPaintEngine::OpenGL the default GL engine, call QGL::setPreferredPaintEngine(QPaintEngine::OpenGL) before the QApplication constructor.

Overpaint with QPainter::drawText() instead.

virtual void QtOpenGL.QGLWidget.ResizeGL ( int  w, int  h  )

protectedvirtual

This virtual function is called whenever the widget has been resized. The new size is passed in width and height. Reimplement it in a subclass.

There is no need to call makeCurrent() because this has already been done when this function is called.

virtual void QtOpenGL.QGLWidget.ResizeOverlayGL ( int  w, int  h  )

protectedvirtual

This virtual function is used in the same manner as paintGL() except that it operates on the widget's overlay context instead of the widget's main context. This means that resizeOverlayGL() is called whenever the widget has been resized. The new size is passed in width and height. Reimplement it in a subclass.

There is no need to call makeOverlayCurrent() because this has already been done when this function is called.

new void QtOpenGL.QGLWidget.SetContext	(	QGLContext	context,
		QGLContext	shareContext = null,
		bool	deleteOldContext = true
	)

new void QtOpenGL.QGLWidget.SetMouseTracking

(

bool

enable

)

If enable is true then mouse tracking is enabled; otherwise it is disabled.

new void QtOpenGL.QGLWidget.SwapBuffers

(

)

Swaps the screen contents with an off-screen buffer. This only works if the widget's format specifies double buffer mode.

Normally, there is no need to explicitly call this function because it is done automatically after each widget repaint, i.e. each time after paintGL() has been executed.

See also doubleBuffer(), setAutoBufferSwap(), and QGLFormat::setDoubleBuffer().

static string QtOpenGL.QGLWidget.Tr ( string  s, string  c = null  )

static

static string QtOpenGL.QGLWidget.Tr ( string  s, string  c, int  n  )

static

static string QtOpenGL.QGLWidget.TrUtf8 ( string  s, string  c = null  )

static

static string QtOpenGL.QGLWidget.TrUtf8 ( string  s, string  c, int  n  )

static

virtual void QtOpenGL.QGLWidget.UpdateGL ( )

virtual

Updates the widget by calling glDraw().

virtual void QtOpenGL.QGLWidget.UpdateOverlayGL ( )

virtual

Updates the widget's overlay (if any). Will cause the virtual function paintOverlayGL() to be executed.

The widget's rendering context will become the current context and initializeGL() will be called if it hasn't already been called.

Property Documentation

new bool QtOpenGL.QGLWidget.AutoBufferSwap

getsetprotected

Returns true if the widget is doing automatic GL buffer swapping; otherwise returns false.

If on is true automatic GL buffer swapping is switched on; otherwise it is switched off.

If on is true and the widget is using a double-buffered format, the background and foreground GL buffers will automatically be swapped after each paintGL() call.

The buffer auto-swapping is on by default.

new QGLColormap QtOpenGL.QGLWidget.Colormap

getset

Returns the colormap for this widget.

Usually it is only top-level widgets that can have different colormaps installed. Asking for the colormap of a child widget will return the colormap for the child's top-level widget.

If no colormap has been set for this widget, the QGLColormap returned will be empty.

Set the colormap for this widget to cmap. Usually it is only top-level widgets that can have colormaps installed.

new QGLContext QtOpenGL.QGLWidget.Context

get

Returns the context of this widget.

It is possible that the context is not valid (see isValid()), for example, if the underlying hardware does not support the format attributes that were requested.

new IQGLWidgetSignals QtOpenGL.QGLWidget.Emit

getprotected

new QGLFormat QtOpenGL.QGLWidget.Format

getset

Returns the format of the contained GL rendering context.

Sets a new format for this widget.

If the underlying OpenGL/Window system cannot satisfy all the features requested in format, the nearest subset of features will be used. After creation, the format() method will return the actual rendering context format obtained.

The widget will be assigned a new QGLContext, and the initializeGL() function will be executed for this new context before the first resizeGL() or paintGL().

This method will try to keep display list and texture object sharing in effect with other QGLWidget objects, but changing the format might make sharing impossible. Use isSharing() to see if sharing is still in effect.

new QMetaObject QtOpenGL.QGLWidget.StaticMetaObject

staticget