qwtcpointerdata.3

linux下qt的第三方的一个类

.TH "QwtCPointerData" 3 "16 Nov 2004" "Version 4.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtCPointerData \- 
.SH SYNOPSIS
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.PP
Inherits \fBQwtData\fP.
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.SH "Detailed Description"
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Data class containing two pointers to memory blocks of doubles. 
.PP
Definition at line 125 of file qwt_data.h.
.SS "Public Member Functions"

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.RI "\fBQwtCPointerData\fP (const double *x, const double *y, size_t size)"
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.RI "\fBQwtCPointerData\fP & \fBoperator=\fP (const \fBQwtCPointerData\fP &)"
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.RI "virtual \fBQwtData\fP * \fBcopy\fP () const"
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.RI "virtual size_t \fBsize\fP () const"
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.RI "virtual double \fBx\fP (size_t i) const"
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.RI "virtual double \fBy\fP (size_t i) const"
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.RI "virtual \fBQwtDoubleRect\fP \fBboundingRect\fP () const"
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.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtCPointerData::QwtCPointerData (const double * x, const double * y, size_t size)"
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Constructor
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\fBWarning:\fP
.RS 4
The programmer must assure that the memory blocks referenced by the pointers remain valid during the lifetime of the QwtPlotCPointer object. 
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\fBSee also:\fP
.RS 4
\fBQwtCurve::setRawData\fP and \fBQwtPlot::setCurveRawData\fP. 
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Definition at line 187 of file qwt_data.cpp.
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Referenced by copy().
.SH "Member Function Documentation"
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.SS "\fBQwtDoubleRect\fP QwtCPointerData::boundingRect () const\fC [virtual]\fP"
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Returns the bounding rectangle of the data. If there is no bounding rect, like for empty data the rectangle is invalid: \fBQwtDoubleRect::isValid()\fP == FALSE 
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Reimplemented from \fBQwtData\fP.
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Definition at line 230 of file qwt_data.cpp.
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References size().
.SS "\fBQwtData\fP * QwtCPointerData::copy () const\fC [virtual]\fP"
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Return a pointer to a copy (virtual copy constructor) 
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Implements \fBQwtData\fP.
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Definition at line 220 of file qwt_data.cpp.
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References QwtCPointerData().
.SS "\fBQwtCPointerData\fP & QwtCPointerData::operator= (const \fBQwtCPointerData\fP &)"
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Assignment. 
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Definition at line 194 of file qwt_data.cpp.
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References d_size, d_x, and d_y.
.SS "size_t QwtCPointerData::size () const\fC [virtual]\fP"
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Return the size of the data set 
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Implements \fBQwtData\fP.
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Definition at line 205 of file qwt_data.cpp.
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Referenced by boundingRect().
.SS "double QwtCPointerData::x (size_t i) const\fC [virtual]\fP"
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Return the x value of data point i 
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\fBParameters:\fP
.RS 4
\fIi\fP Index 
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\fBReturns:\fP
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x X value of data point i 
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Implements \fBQwtData\fP.
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Definition at line 210 of file qwt_data.cpp.
.SS "double QwtCPointerData::y (size_t i) const\fC [virtual]\fP"
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Return the y value of data point i 
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\fBParameters:\fP
.RS 4
\fIi\fP Index 
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\fBReturns:\fP
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y Y value of data point i 
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Implements \fBQwtData\fP.
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Definition at line 215 of file qwt_data.cpp.

.SH "Author"
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