630 lines
14 KiB
Groff
630 lines
14 KiB
Groff
.TH "QwtPlotLayout" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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QwtPlotLayout \- Layout engine for \fBQwtPlot\fP\&.
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.SH SYNOPSIS
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.br
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.PP
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.PP
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\fC#include <qwt_plot_layout\&.h>\fP
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.SS "Public Types"
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.in +1c
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.ti -1c
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.RI "enum \fBOption\fP { \fBAlignScales\fP = 0x01, \fBIgnoreScrollbars\fP = 0x02, \fBIgnoreFrames\fP = 0x04, \fBIgnoreLegend\fP = 0x08, \fBIgnoreTitle\fP = 0x10, \fBIgnoreFooter\fP = 0x20 }"
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.br
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.ti -1c
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.RI "typedef QFlags< \fBOption\fP > \fBOptions\fP"
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.br
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.in -1c
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.SS "Public Member Functions"
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.in +1c
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.RI "\fBQwtPlotLayout\fP ()"
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.br
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.RI "Constructor\&. "
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.ti -1c
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.RI "virtual \fB~QwtPlotLayout\fP ()"
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.br
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.RI "Destructor\&. "
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.ti -1c
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.RI "void \fBsetCanvasMargin\fP (int margin, int axis=\-1)"
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.br
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.ti -1c
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.RI "int \fBcanvasMargin\fP (int axisId) const"
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.br
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.ti -1c
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.RI "void \fBsetAlignCanvasToScales\fP (bool)"
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.br
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.RI "Set the align-canvas-to-axis-scales flag for all axes\&. "
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.ti -1c
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.RI "void \fBsetAlignCanvasToScale\fP (int axisId, bool)"
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.br
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.ti -1c
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.RI "bool \fBalignCanvasToScale\fP (int axisId) const"
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.br
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.ti -1c
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.RI "void \fBsetSpacing\fP (int)"
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.br
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.ti -1c
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.RI "int \fBspacing\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetLegendPosition\fP (\fBQwtPlot::LegendPosition\fP pos, double ratio)"
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.br
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.RI "Specify the position of the legend\&. "
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.ti -1c
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.RI "void \fBsetLegendPosition\fP (\fBQwtPlot::LegendPosition\fP pos)"
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.br
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.RI "Specify the position of the legend\&. "
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.ti -1c
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.RI "\fBQwtPlot::LegendPosition\fP \fBlegendPosition\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetLegendRatio\fP (double ratio)"
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.br
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.ti -1c
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.RI "double \fBlegendRatio\fP () const"
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.br
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.ti -1c
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.RI "virtual QSize \fBminimumSizeHint\fP (const \fBQwtPlot\fP *) const"
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.br
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.ti -1c
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.RI "virtual void \fBactivate\fP (const \fBQwtPlot\fP *, const QRectF &plotRect, \fBOptions\fP options=\fBOptions\fP())"
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.br
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.RI "Recalculate the geometry of all components\&. "
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.ti -1c
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.RI "virtual void \fBinvalidate\fP ()"
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.br
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.ti -1c
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.RI "QRectF \fBtitleRect\fP () const"
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.br
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.ti -1c
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.RI "QRectF \fBfooterRect\fP () const"
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.br
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.ti -1c
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.RI "QRectF \fBlegendRect\fP () const"
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.br
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.ti -1c
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.RI "QRectF \fBscaleRect\fP (QwtAxisId) const"
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.br
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.ti -1c
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.RI "QRectF \fBcanvasRect\fP () const"
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.br
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.in -1c
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.SS "Protected Member Functions"
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.in +1c
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.RI "void \fBsetTitleRect\fP (const QRectF &)"
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.br
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.RI "Set the geometry for the title\&. "
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.ti -1c
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.RI "void \fBsetFooterRect\fP (const QRectF &)"
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.br
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.RI "Set the geometry for the footer\&. "
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.ti -1c
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.RI "void \fBsetLegendRect\fP (const QRectF &)"
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.br
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.RI "Set the geometry for the legend\&. "
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.ti -1c
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.RI "void \fBsetScaleRect\fP (QwtAxisId, const QRectF &)"
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.br
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.RI "Set the geometry for an axis\&. "
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.ti -1c
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.RI "void \fBsetCanvasRect\fP (const QRectF &)"
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.br
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.RI "Set the geometry for the canvas\&. "
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.in -1c
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.SH "Detailed Description"
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.PP
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Layout engine for \fBQwtPlot\fP\&.
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It is used by the \fBQwtPlot\fP widget to organize its internal widgets or by QwtPlot::print() to render its content to a QPaintDevice like a QPrinter, QPixmap/QImage or QSvgRenderer\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtPlot::setPlotLayout()\fP
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.RE
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.PP
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.PP
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Definition at line 27 of file qwt_plot_layout\&.h\&.
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.SH "Member Typedef Documentation"
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.PP
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.SS "typedef QFlags<\fBOption\fP > \fBQwtPlotLayout::Options\fP"
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An ORed combination of \fBOption\fP values\&.
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.PP
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Definition at line 58 of file qwt_plot_layout\&.h\&.
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.SH "Member Enumeration Documentation"
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.PP
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.SS "enum \fBQwtPlotLayout::Option\fP"
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Options to configure the plot layout engine
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.PP
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\fBSee also\fP
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.RS 4
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\fBactivate()\fP, \fBQwtPlotRenderer\fP
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.RE
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.PP
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.PP
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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fIAlignScales \fP\fP
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Unused\&.
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.TP
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\fB\fIIgnoreScrollbars \fP\fP
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Ignore the dimension of the scrollbars\&. There are no scrollbars, when the plot is not rendered to widgets\&.
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.TP
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\fB\fIIgnoreFrames \fP\fP
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Ignore all frames\&.
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.TP
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\fB\fIIgnoreLegend \fP\fP
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Ignore the legend\&.
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.TP
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\fB\fIIgnoreTitle \fP\fP
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Ignore the title\&.
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.TP
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\fB\fIIgnoreFooter \fP\fP
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Ignore the footer\&.
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.PP
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Definition at line 34 of file qwt_plot_layout\&.h\&.
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.SH "Member Function Documentation"
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.PP
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.SS "void QwtPlotLayout::activate (const \fBQwtPlot\fP * plot, const QRectF & plotRect, \fBOptions\fP options = \fC\fBOptions\fP()\fP)\fC [virtual]\fP"
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.PP
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Recalculate the geometry of all components\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIplot\fP Plot to be layout
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.br
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\fIplotRect\fP Rectangle where to place the components
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.br
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\fIoptions\fP Layout options
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBinvalidate()\fP, \fBtitleRect()\fP, \fBfooterRect()\fP \fBlegendRect()\fP, \fBscaleRect()\fP, \fBcanvasRect()\fP
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.RE
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.PP
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.PP
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Definition at line 1508 of file qwt_plot_layout\&.cpp\&.
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.SS "bool QwtPlotLayout::alignCanvasToScale (int axisPos) const"
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Return the align-canvas-to-axis-scales setting\&. The canvas may:
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.IP "\(bu" 2
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extend beyond the axis scale ends to maximize its size
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.IP "\(bu" 2
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align with the axis scale ends to control its size\&.
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.PP
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.PP
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\fBParameters\fP
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.RS 4
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\fIaxisPos\fP Axis position
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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align-canvas-to-axis-scales setting
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetAlignCanvasToScale()\fP, \fBsetAlignCanvasToScale()\fP, \fBsetCanvasMargin()\fP
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.RE
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.PP
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.PP
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Definition at line 1141 of file qwt_plot_layout\&.cpp\&.
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.SS "int QwtPlotLayout::canvasMargin (int axisPos) const"
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.PP
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\fBParameters\fP
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.RS 4
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\fIaxisPos\fP Axis position
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Margin around the scale tick borders
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetCanvasMargin()\fP
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.RE
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.PP
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.PP
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Definition at line 1089 of file qwt_plot_layout\&.cpp\&.
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.SS "QRectF QwtPlotLayout::canvasRect () const"
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.PP
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\fBReturns\fP
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.RS 4
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Geometry for the canvas
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBactivate()\fP, \fBinvalidate()\fP
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.RE
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.PP
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.PP
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Definition at line 1380 of file qwt_plot_layout\&.cpp\&.
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.SS "QRectF QwtPlotLayout::footerRect () const"
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.PP
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\fBReturns\fP
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.RS 4
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Geometry for the footer
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBactivate()\fP, \fBinvalidate()\fP
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.RE
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.PP
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.PP
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Definition at line 1304 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::invalidate ()\fC [virtual]\fP"
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Invalidate the geometry of all components\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBactivate()\fP
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.RE
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.PP
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.PP
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Definition at line 1389 of file qwt_plot_layout\&.cpp\&.
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.SS "\fBQwtPlot::LegendPosition\fP QwtPlotLayout::legendPosition () const"
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.PP
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\fBReturns\fP
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.RS 4
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Position of the legend
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetLegendPosition()\fP, QwtPlot::setLegendPosition(), QwtPlot::legendPosition()
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.RE
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.PP
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.PP
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Definition at line 1237 of file qwt_plot_layout\&.cpp\&.
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.SS "double QwtPlotLayout::legendRatio () const"
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.PP
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\fBReturns\fP
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.RS 4
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The relative size of the legend in the plot\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetLegendPosition()\fP
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.RE
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.PP
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.PP
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Definition at line 1260 of file qwt_plot_layout\&.cpp\&.
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.SS "QRectF QwtPlotLayout::legendRect () const"
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.PP
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\fBReturns\fP
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.RS 4
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Geometry for the legend
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBactivate()\fP, \fBinvalidate()\fP
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.RE
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.PP
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.PP
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Definition at line 1328 of file qwt_plot_layout\&.cpp\&.
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.SS "QSize QwtPlotLayout::minimumSizeHint (const \fBQwtPlot\fP * plot) const\fC [virtual]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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Minimum size hint
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.RE
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.PP
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\fBParameters\fP
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.RS 4
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\fIplot\fP Plot widget
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtPlot::minimumSizeHint()\fP
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.RE
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.PP
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.PP
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Definition at line 1404 of file qwt_plot_layout\&.cpp\&.
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.SS "QRectF QwtPlotLayout::scaleRect (QwtAxisId axisId) const"
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.PP
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\fBParameters\fP
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.RS 4
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\fIaxisId\fP Axis
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Geometry for the scale
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBactivate()\fP, \fBinvalidate()\fP
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.RE
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.PP
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.PP
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Definition at line 1355 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setAlignCanvasToScale (int axisPos, bool on)"
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Change the align-canvas-to-axis-scales setting\&. The canvas may:
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.PP
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.IP "\(bu" 2
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extend beyond the axis scale ends to maximize its size,
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.IP "\(bu" 2
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align with the axis scale ends to control its size\&.
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.PP
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.PP
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The axisId parameter is somehow confusing as it identifies a border of the plot and not the axes, that are aligned\&. F\&.e when \fBQwtAxis::YLeft\fP is set, the left end of the the x-axes ( \fBQwtAxis::XTop\fP, \fBQwtAxis::XBottom\fP ) is aligned\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIaxisId\fP Axis index
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.br
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\fIon\fP New align-canvas-to-axis-scales setting
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetCanvasMargin()\fP, \fBalignCanvasToScale()\fP, \fBsetAlignCanvasToScales()\fP
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.RE
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.PP
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\fBWarning\fP
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.RS 4
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In case of on == true \fBcanvasMargin()\fP will have no effect
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.RE
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.PP
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.PP
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Definition at line 1126 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setAlignCanvasToScales (bool on)"
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.PP
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Set the align-canvas-to-axis-scales flag for all axes\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIon\fP True/False
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetAlignCanvasToScale()\fP, \fBalignCanvasToScale()\fP
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.RE
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.PP
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.PP
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Definition at line 1103 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setCanvasMargin (int margin, int axisPos = \fC\-1\fP)"
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Change a margin of the canvas\&. The margin is the space above/below the scale ticks\&. A negative margin will be set to -1, excluding the borders of the scales\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fImargin\fP New margin
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.br
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\fIaxisPos\fP One of \fBQwtAxis::Position\fP\&. Specifies where the position of the margin\&. -1 means margin at all borders\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBcanvasMargin()\fP
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.RE
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.PP
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\fBWarning\fP
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.RS 4
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The margin will have no effect when \fBalignCanvasToScale()\fP is true
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.RE
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.PP
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.PP
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Definition at line 1066 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setCanvasRect (const QRectF & rect)\fC [protected]\fP"
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.PP
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Set the geometry for the canvas\&. This method is intended to be used from derived layouts overloading \fBactivate()\fP
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.PP
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\fBSee also\fP
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.RS 4
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\fBcanvasRect()\fP, \fBactivate()\fP
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.RE
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.PP
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.PP
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Definition at line 1371 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setFooterRect (const QRectF & rect)\fC [protected]\fP"
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.PP
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Set the geometry for the footer\&. This method is intended to be used from derived layouts overloading \fBactivate()\fP
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.PP
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\fBSee also\fP
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.RS 4
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\fBfooterRect()\fP, \fBactivate()\fP
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.RE
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.PP
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.PP
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Definition at line 1295 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setLegendPosition (\fBQwtPlot::LegendPosition\fP pos)"
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.PP
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Specify the position of the legend\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpos\fP The legend's position\&. Valid values are \fC\fBQwtPlot::LeftLegend\fP\fP, \fC\fBQwtPlot::RightLegend\fP\fP, \fC\fBQwtPlot::TopLegend\fP\fP, \fC\fBQwtPlot::BottomLegend\fP\fP\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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QwtPlot::setLegendPosition()
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.RE
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.PP
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.PP
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Definition at line 1227 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setLegendPosition (\fBQwtPlot::LegendPosition\fP pos, double ratio)"
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.PP
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Specify the position of the legend\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpos\fP The legend's position\&.
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.br
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\fIratio\fP Ratio between legend and the bounding rectangle of title, footer, canvas and axes\&. The legend will be shrunk if it would need more space than the given ratio\&. The ratio is limited to ]0\&.0 \&.\&. 1\&.0]\&. In case of <= 0\&.0 it will be reset to the default ratio\&. The default vertical/horizontal ratio is 0\&.33/0\&.5\&.
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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QwtPlot::setLegendPosition()
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.RE
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.PP
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.PP
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Definition at line 1183 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setLegendRatio (double ratio)"
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Specify the relative size of the legend in the plot
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.PP
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\fBParameters\fP
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.RS 4
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\fIratio\fP Ratio between legend and the bounding rectangle of title, footer, canvas and axes\&. The legend will be shrunk if it would need more space than the given ratio\&. The ratio is limited to ]0\&.0 \&.\&. 1\&.0]\&. In case of <= 0\&.0 it will be reset to the default ratio\&. The default vertical/horizontal ratio is 0\&.33/0\&.5\&.
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.RE
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.PP
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.PP
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Definition at line 1251 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setLegendRect (const QRectF & rect)\fC [protected]\fP"
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.PP
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Set the geometry for the legend\&. This method is intended to be used from derived layouts overloading \fBactivate()\fP
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.PP
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\fBParameters\fP
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.RS 4
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\fIrect\fP Rectangle for the legend
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBlegendRect()\fP, \fBactivate()\fP
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.RE
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.PP
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.PP
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Definition at line 1319 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setScaleRect (QwtAxisId axisId, const QRectF & rect)\fC [protected]\fP"
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.PP
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Set the geometry for an axis\&. This method is intended to be used from derived layouts overloading \fBactivate()\fP
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.PP
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\fBParameters\fP
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.RS 4
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\fIaxisId\fP Axis
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.br
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\fIrect\fP Rectangle for the scale
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBscaleRect()\fP, \fBactivate()\fP
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.RE
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.PP
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.PP
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Definition at line 1344 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setSpacing (int spacing)"
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Change the spacing of the plot\&. The spacing is the distance between the plot components\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIspacing\fP New spacing
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetCanvasMargin()\fP, \fBspacing()\fP
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.RE
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.PP
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.PP
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Definition at line 1156 of file qwt_plot_layout\&.cpp\&.
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.SS "void QwtPlotLayout::setTitleRect (const QRectF & rect)\fC [protected]\fP"
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.PP
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Set the geometry for the title\&. This method is intended to be used from derived layouts overloading \fBactivate()\fP
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.PP
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\fBSee also\fP
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.RS 4
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\fBtitleRect()\fP, \fBactivate()\fP
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.RE
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.PP
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.PP
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Definition at line 1273 of file qwt_plot_layout\&.cpp\&.
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.SS "int QwtPlotLayout::spacing () const"
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.PP
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\fBReturns\fP
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.RS 4
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Spacing
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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margin(), \fBsetSpacing()\fP
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.RE
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.PP
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.PP
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Definition at line 1165 of file qwt_plot_layout\&.cpp\&.
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.SS "QRectF QwtPlotLayout::titleRect () const"
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.PP
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\fBReturns\fP
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.RS 4
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Geometry for the title
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBactivate()\fP, \fBinvalidate()\fP
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.RE
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.PP
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.PP
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Definition at line 1282 of file qwt_plot_layout\&.cpp\&.
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
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