QWTCPOINTERDATA(3)

📦
version 6.3.0 · 6 versions
, in alpine 3.24

💅 QwtCPointerData< T > 💅

okay bestie, welcome to QwtCPointerData< T >(3) from the Library Functions Manual — this is the data class that contains two pointers to memory blocks of T, and it is lowkey carrying the whole data-class vibe. 🎀

🌸 NAME 🌸

QwtCPointerData< T > — data class containing two pointers to memory blocks of T.

✨ SYNOPSIS ✨

#include <qwt_point_data.h>

Inherits QwtSeriesData< QPointF >.

🌟 Public Member Functions 🌟

  • QwtCPointerData (const T *x, const T *y, size_t size)
  • virtual size_t size () const override
  • virtual QPointF sample (size_t index) const override
  • const T * xData () const
  • const T * yData () const

💖 Public Member Functions inherited from QwtSeriesData< QPointF > 💖

  • QwtSeriesData () — Constructor.
  • virtual ~QwtSeriesData () — Destructor.
  • QPointF firstSample () const
  • QPointF lastSample () const
  • virtual QRectF boundingRect () const
  • virtual void setRectOfInterest (const QRectF &rect)

🫶 Additional Inherited Members 🫶

Protected Attributes inherited from QwtSeriesData< QPointF >

  • QRectF cachedBoundingRect — Can be used to cache a calculated bounding rectangle.

🦋 DETAILED DESCRIPTION 🦋

template<typename T>
class QwtCPointerData< T >"Data class containing two pointers to memory blocks of T.

Definition at line 43 of file qwt_point_data.h.

Yes bestie, that stray quote mark after > is literally in the source — leave it alone 💀✨

🎀 CONSTRUCTOR & DESTRUCTOR DOCUMENTATION 🎀

template<typename T>
QwtCPointerData< T >::QwtCPointerData (const T * x, const T * y, size_t size)

Constructor

Parameters

  • x — Array of x values
  • y — Array of y values
  • size — Size of the x and y arrays
⚠️ Warning: The programmer must assure that the memory blocks referenced by the pointers remain valid during the lifetime of the QwtPlotCPointer object. This is the important part, bestie — keep those blocks alive for the whole lifetime, no cap. 🫶

See also: QwtPlotCurve::setData(), QwtPlotCurve::setRawSamples()

Definition at line 326 of file qwt_point_data.h.

💜 MEMBER FUNCTION DOCUMENTATION 💜

🦋 sample

template<typename T>
QPointF QwtCPointerData< T >::sample (size_t index) const [override],  [virtual]

Return the sample at position i

Parameters

  • index — Index

Returns

Sample at position i

Implements QwtSeriesData< QPointF >.

Definition at line 347 of file qwt_point_data.h.

🌸 size

template<typename T>
size_t QwtCPointerData< T >::size () const [override], [virtual]

Returns

Size of the data set

Implements QwtSeriesData< QPointF >.

Definition at line 335 of file qwt_point_data.h.

✨ xData

template<typename T>
const T * QwtCPointerData< T >::xData () const

Returns

Array of the x-values

Definition at line 354 of file qwt_point_data.h.

🎀 yData

template<typename T>
const T * QwtCPointerData< T >::yData () const

Returns

Array of the y-values

Definition at line 361 of file qwt_point_data.h.

👑 AUTHOR 👑

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mwah 💋 that's the whole page. Footer sign-off: Qwt User's Guide source/version + QwtCPointerData< T >(3) title; date? not printed in the source, so no invented date tea 🎀✨

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