The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
RAND crypto functions – Functionsvoid RAND_seed (const void *indata, size_t size) int RAND_bytes (void *outdata, size_t size) void RAND_cleanup (void) void RAND_add (const void *indata, size_t size, double entropi) int RAND_pseudo_bytes (void *outdata, size_t size) int RAND_status (void) int RAND_set_rand_method (const RAND_METHOD *meth) const RAND_METHOD * RAND_get_rand_method (void) int RAND_set_rand_engine (ENGINE *engine) int RAND_load_file (const…
QwtWidgetOverlay – An overlay for a widget. Synopsis#include <qwt_widget_overlay.h> Inherits QWidget. Inherited by QwtPickerRubberband, and QwtPickerTracker. Public Typesenum MaskMode { NoMask, MaskHint, AlphaMask } Mask mode. enum RenderMode { AutoRenderMode, CopyAlphaMask, DrawOverlay } Render mode. Public Member FunctionsQwtWidgetOverlay (QWidget *) Constructor. virtual ~QwtWidgetOverlay () Destructor. void setMaskMode (MaskMode) Specify how to find the mask for…
QwtWheel – The Wheel Widget. Synopsis#include <qwt_wheel.h> Inherits QWidget. Public Slotsvoid setValue (double) Set a new value without adjusting to the step raster. void setTotalAngle (double) Set the total angle which the wheel can be turned. void setViewAngle (double) Specify the visible portion of the wheel. void setMass (double) Set the slider’s mass for flywheel…
QwtWeedingCurveFitter – A curve fitter implementing Douglas and Peucker algorithm. Synopsis#include <qwt_curve_fitter.h> Inherits QwtCurveFitter. Public Member FunctionsQwtWeedingCurveFitter (double tolerance=1.0) virtual ~QwtWeedingCurveFitter () Destructor. void setTolerance (double) double tolerance () const void setChunkSize (uint) uint chunkSize () const virtual QPolygonF fitCurve (const QPolygonF &) const Additional Inherited MembersDetailed DescriptionA curve fitter implementing Douglas and Peucker algorithm….
QwtTransform – A transformation between coordinate systems. Synopsis#include <qwt_transform.h> Inherited by QwtLogTransform, QwtNullTransform, and QwtPowerTransform. Public Member FunctionsQwtTransform () Constructor. virtual ~QwtTransform () Destructor. virtual double bounded (double value) const virtual double transform (double value) const =0 virtual double invTransform (double value) const =0 virtual QwtTransform * copy () const =0 Virtualized copy operation. Detailed…
QwtTradingChartData – Synopsis#include <qwt_series_data.h> Inherits QwtArraySeriesData< QwtOHLCSample >. Public Member FunctionsQwtTradingChartData (const QVector< QwtOHLCSample > &=QVector< QwtOHLCSample >()) virtual QRectF boundingRect () const Calculate the bounding rectangle. Additional Inherited MembersDetailed DescriptionInterface for iterating over an array of OHLC samples Constructor & Destructor DocumentationQwtTradingChartData::QwtTradingChartData (const QVector< QwtOHLCSample > &samples = QVector<QwtOHLCSample>())Constructor Parameters: samples SamplesMember Function DocumentationQRectF…
QwtThermo – The Thermometer Widget. Synopsis#include <qwt_thermo.h> Inherits QwtAbstractScale. Public Typesenum ScalePosition { NoScale, LeadingScale, TrailingScale } enum OriginMode { OriginMinimum, OriginMaximum, OriginCustom } Public Slotsvirtual void setValue (double val) Public Member FunctionsQwtThermo (QWidget *parent=NULL) virtual ~QwtThermo () Destructor. void setOrientation (Qt::Orientation) Set the orientation. Qt::Orientation orientation () const void setScalePosition (ScalePosition) Change the position…
QwtTextLabel – A Widget which displays a QwtText. Synopsis#include <qwt_text_label.h> Inherits QFrame. Inherited by QwtLegendLabel. Public Slotsvoid setText (const QString &, QwtText::TextFormat textFormat=QwtText::AutoText) virtual void setText (const QwtText &) void clear () Clear the text and all QwtText attributes. Public Member FunctionsQwtTextLabel (QWidget *parent=NULL) QwtTextLabel (const QwtText &, QWidget *parent=NULL) virtual ~QwtTextLabel () Destructor. void…
QwtTextEngine – Abstract base class for rendering text strings. Synopsis#include <qwt_text_engine.h> Inherited by QwtMathMLTextEngine, QwtPlainTextEngine, and QwtRichTextEngine. Public Member Functionsvirtual ~QwtTextEngine () Destructor. virtual double heightForWidth (const QFont &font, int flags, const QString &text, double width) const =0 virtual QSizeF textSize (const QFont &font, int flags, const QString &text) const =0 virtual bool mightRender (const…
QwtText – A class representing a text. Synopsis#include <qwt_text.h> Public Typesenum TextFormat { AutoText = 0, PlainText, RichText, MathMLText, TeXText, OtherFormat = 100 } Text format. enum PaintAttribute { PaintUsingTextFont = 0x01, PaintUsingTextColor = 0x02, PaintBackground = 0x04 } Paint Attributes. enum LayoutAttribute { MinimumLayout = 0x01 } Layout Attributes The layout attributes affects some…
QwtSystemClock – QwtSystemClock provides high resolution clock time functions. Synopsis#include <qwt_system_clock.h> Public Member FunctionsQwtSystemClock () Constructs a null clock object. virtual ~QwtSystemClock () Destructor. bool isNull () const void start () double restart () double elapsed () const Detailed DescriptionQwtSystemClock provides high resolution clock time functions. Sometimes the resolution offered by QTime ( millisecond )…
QwtSyntheticPointData – Synthetic point data. Synopsis#include <qwt_point_data.h> Inherits QwtSeriesData< QPointF >. Public Member FunctionsQwtSyntheticPointData (size_t size, const QwtInterval &=QwtInterval()) void setSize (size_t size) virtual size_t size () const void setInterval (const QwtInterval &) QwtInterval interval () const virtual QRectF boundingRect () const Calculate the bounding rectangle. virtual QPointF sample (size_t i) const virtual double y…
QwtSymbol – A class for drawing symbols. Synopsis#include <qwt_symbol.h> Public Typesenum Style { NoSymbol = -1, Ellipse, Rect, Diamond, Triangle, DTriangle, UTriangle, LTriangle, RTriangle, Cross, XCross, HLine, VLine, Star1, Star2, Hexagon, Path, Pixmap, Graphic, SvgDocument, UserStyle = 1000 } enum CachePolicy { NoCache, Cache, AutoCache } Public Member FunctionsQwtSymbol (Style=NoSymbol) QwtSymbol (Style, const QBrush &,…
QwtSplineCurveFitter – A curve fitter using cubic splines. Synopsis#include <qwt_curve_fitter.h> Inherits QwtCurveFitter. Public Typesenum FitMode { Auto, Spline, ParametricSpline } Public Member FunctionsQwtSplineCurveFitter () Constructor. virtual ~QwtSplineCurveFitter () Destructor. void setFitMode (FitMode) FitMode fitMode () const void setSpline (const QwtSpline &) const QwtSpline & spline () const QwtSpline & spline () void setSplineSize (int size)…
QwtSpline – A class for spline interpolation. Synopsis#include <qwt_spline.h> Public Typesenum SplineType { Natural, Periodic } Spline type. Public Member FunctionsQwtSpline () Constructor. QwtSpline (const QwtSpline &) ~QwtSpline () Destructor. QwtSpline & operator= (const QwtSpline &) void setSplineType (SplineType) SplineType splineType () const bool setPoints (const QPolygonF &points) Calculate the spline coefficients. QPolygonF points ()…
QwtSlider – The Slider Widget. Synopsis#include <qwt_slider.h> Inherits QwtAbstractSlider. Public Typesenum ScalePosition { NoScale, LeadingScale, TrailingScale } Public Member FunctionsQwtSlider (QWidget *parent=NULL) QwtSlider (Qt::Orientation, QWidget *parent=NULL) virtual ~QwtSlider () Destructor. void setOrientation (Qt::Orientation) Set the orientation. Qt::Orientation orientation () const void setScalePosition (ScalePosition) Change the position of the scale. ScalePosition scalePosition () const void setTrough…
QwtSimpleCompassRose – A simple rose for QwtCompass. Synopsis#include <qwt_compass_rose.h> Inherits QwtCompassRose. Public Member FunctionsQwtSimpleCompassRose (int numThorns=8, int numThornLevels=-1) virtual ~QwtSimpleCompassRose () Destructor. void setWidth (double w) double width () const void setNumThorns (int count) int numThorns () const void setNumThornLevels (int count) int numThornLevels () const void setShrinkFactor (double factor) double shrinkFactor () const virtual…
QwtSetSeriesData – Interface for iterating over an array of samples. Synopsis#include <qwt_series_data.h> Inherits QwtArraySeriesData< QwtSetSample >. Public Member FunctionsQwtSetSeriesData (const QVector< QwtSetSample > &=QVector< QwtSetSample >()) virtual QRectF boundingRect () const Calculate the bounding rectangle. Additional Inherited MembersDetailed DescriptionInterface for iterating over an array of samples. Constructor & Destructor DocumentationQwtSetSeriesData::QwtSetSeriesData (const QVector< QwtSetSample > &samples…
QwtSetSample – A sample of the types (x1…xn, y) or (x, y1..yn) Synopsis#include <qwt_samples.h> Public Member FunctionsQwtSetSample () QwtSetSample (double, const QVector< double > &=QVector< double >()) bool operator== (const QwtSetSample &other) const Compare operator. bool operator!= (const QwtSetSample &other) const Compare operator. double added () const Public Attributesdouble value value QVector< double > set…
QwtSeriesStore< T > – Class storing a QwtSeriesData object. Synopsis#include <qwt_series_store.h> Inherits QwtAbstractSeriesStore. Public Member FunctionsQwtSeriesStore () Constructor The store contains no series. ~QwtSeriesStore () Destructor. void setData (QwtSeriesData< T > *series) QwtSeriesData< T > * data () const QwtSeriesData< T > * data () const T sample (int index) const virtual size_t dataSize ()…