756 lines
15 KiB
Groff
756 lines
15 KiB
Groff
.TH "QwtSlider" 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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QwtSlider \- The Slider Widget\&.
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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_slider\&.h>\fP
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.PP
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Inherits \fBQwtAbstractSlider\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 \fBScalePosition\fP { \fBNoScale\fP, \fBLeadingScale\fP, \fBTrailingScale\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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.ti -1c
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.RI "\fBQwtSlider\fP (QWidget *parent=NULL)"
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.br
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.ti -1c
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.RI "\fBQwtSlider\fP (Qt::Orientation, QWidget *parent=NULL)"
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.br
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.ti -1c
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.RI "virtual \fB~QwtSlider\fP ()"
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.br
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.RI "Destructor\&. "
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.ti -1c
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.RI "void \fBsetOrientation\fP (Qt::Orientation)"
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.br
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.RI "Set the orientation\&. "
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.ti -1c
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.RI "Qt::Orientation \fBorientation\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetScalePosition\fP (\fBScalePosition\fP)"
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.br
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.RI "Change the position of the scale\&. "
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.ti -1c
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.RI "\fBScalePosition\fP \fBscalePosition\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetTrough\fP (bool)"
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.br
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.ti -1c
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.RI "bool \fBhasTrough\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetGroove\fP (bool)"
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.br
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.ti -1c
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.RI "bool \fBhasGroove\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetHandleSize\fP (const QSize &)"
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.br
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.RI "Set the slider's handle size\&. "
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.ti -1c
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.RI "QSize \fBhandleSize\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetBorderWidth\fP (int)"
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.br
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.RI "Change the slider's border width\&. "
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.ti -1c
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.RI "int \fBborderWidth\fP () 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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.RI "Change the spacing between trough and scale\&. "
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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 "virtual QSize \fBsizeHint\fP () const override"
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.br
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.ti -1c
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.RI "virtual QSize \fBminimumSizeHint\fP () const override"
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.br
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.ti -1c
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.RI "void \fBsetScaleDraw\fP (\fBQwtScaleDraw\fP *)"
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.br
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.RI "Set a scale draw\&. "
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.ti -1c
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.RI "const \fBQwtScaleDraw\fP * \fBscaleDraw\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetUpdateInterval\fP (int)"
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.br
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.RI "Specify the update interval for automatic scrolling\&. "
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.ti -1c
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.RI "int \fBupdateInterval\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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.ti -1c
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.RI "virtual double \fBscrolledTo\fP (const QPoint &) const override"
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.br
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.RI "Determine the value for a new position of the slider handle\&. "
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.ti -1c
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.RI "virtual bool \fBisScrollPosition\fP (const QPoint &) const override"
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.br
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.RI "Determine what to do when the user presses a mouse button\&. "
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.ti -1c
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.RI "virtual void \fBdrawSlider\fP (QPainter *, const QRect &) const"
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.br
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.RI "virtual void \fBdrawHandle\fP (QPainter *, const QRect &, int pos) const"
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.br
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.ti -1c
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.RI "virtual void \fBmousePressEvent\fP (QMouseEvent *) override"
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.br
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.RI "virtual void \fBmouseReleaseEvent\fP (QMouseEvent *) override"
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.br
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.ti -1c
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.RI "virtual void \fBresizeEvent\fP (QResizeEvent *) override"
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.br
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.ti -1c
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.RI "virtual void \fBpaintEvent\fP (QPaintEvent *) override"
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.br
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.ti -1c
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.RI "virtual void \fBchangeEvent\fP (QEvent *) override"
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.br
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.ti -1c
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.RI "virtual void \fBtimerEvent\fP (QTimerEvent *) override"
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.br
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.ti -1c
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.RI "virtual bool \fBevent\fP (QEvent *) override"
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.br
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.ti -1c
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.RI "virtual void \fBscaleChange\fP () override"
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.br
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.RI "Notify changed scale\&. "
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.ti -1c
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.RI "QRect \fBsliderRect\fP () const"
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.br
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.RI "QRect \fBhandleRect\fP () const"
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.br
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.in -1c
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.SS "Additional Inherited Members"
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.SH "Detailed Description"
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.PP
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The Slider Widget\&.
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\fBQwtSlider\fP is a slider widget which operates on an interval of type double\&. Its position is related to a scale showing the current value\&.
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.PP
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The slider can be customized by having a through, a groove - or both\&.
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.PP
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.PP
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Definition at line 30 of file qwt_slider\&.h\&.
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.SH "Member Enumeration Documentation"
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.PP
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.SS "enum \fBQwtSlider::ScalePosition\fP"
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Position of the scale
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtSlider()\fP, \fBsetScalePosition()\fP, \fBsetOrientation()\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\fINoScale \fP\fP
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The slider has no scale\&.
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.TP
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\fB\fILeadingScale \fP\fP
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The scale is right of a vertical or below a horizontal slider\&.
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.TP
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\fB\fITrailingScale \fP\fP
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The scale is left of a vertical or above a horizontal slider\&.
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.PP
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Definition at line 54 of file qwt_slider\&.h\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "QwtSlider::QwtSlider (QWidget * parent = \fCNULL\fP)\fC [explicit]\fP"
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Construct vertical slider in QwtSlider::Trough style with a scale to the left\&.
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.PP
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The scale is initialized to [0\&.0, 100\&.0] and the value set to 0\&.0\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIparent\fP Parent 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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\fBsetOrientation()\fP, \fBsetScalePosition()\fP, setBackgroundStyle()
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.RE
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.PP
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.PP
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Definition at line 119 of file qwt_slider\&.cpp\&.
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.SS "QwtSlider::QwtSlider (Qt::Orientation orientation, QWidget * parent = \fCNULL\fP)\fC [explicit]\fP"
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Construct a slider in QwtSlider::Trough style
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.PP
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When orientation is Qt::Vertical the scale will be aligned to the left - otherwise at the the top of the slider\&.
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.PP
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The scale is initialized to [0\&.0, 100\&.0] and the value set to 0\&.0\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIparent\fP Parent widget
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.br
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\fIorientation\fP Orientation of the slider\&.
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.RE
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.PP
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.PP
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Definition at line 136 of file qwt_slider\&.cpp\&.
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.SH "Member Function Documentation"
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.PP
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.SS "int QwtSlider::borderWidth () const"
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.PP
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\fBReturns\fP
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.RS 4
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the border width\&.
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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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\fBsetBorderWidth()\fP
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.RE
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.PP
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.PP
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Definition at line 262 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::changeEvent (QEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Handles QEvent::StyleChange and QEvent::FontChange events
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Change event
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtAbstractScale\fP\&.
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.PP
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Definition at line 724 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::drawHandle (QPainter * painter, const QRect & handleRect, int pos) const\fC [protected]\fP, \fC [virtual]\fP"
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Draw the thumb at a position
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIhandleRect\fP Bounding rectangle of the handle
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.br
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\fIpos\fP Position of the handle marker in widget coordinates
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.RE
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.PP
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.PP
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Definition at line 473 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::drawSlider (QPainter * painter, const QRect & sliderRect) const\fC [protected]\fP, \fC [virtual]\fP"
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Draw the slider into the specified rectangle\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIsliderRect\fP Bounding rectangle of the slider
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.RE
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.PP
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.PP
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Definition at line 415 of file qwt_slider\&.cpp\&.
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.SS "bool QwtSlider::event (QEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Qt event handler
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Event
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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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true, if event was recognized and processed
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.RE
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.PP
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.PP
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Definition at line 712 of file qwt_slider\&.cpp\&.
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.SS "QRect QwtSlider::handleRect () const\fC [protected]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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Bounding rectangle of the slider handle
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.RE
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.PP
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.PP
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Definition at line 990 of file qwt_slider\&.cpp\&.
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.SS "QSize QwtSlider::handleSize () const"
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.PP
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\fBReturns\fP
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.RS 4
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Size of the handle\&.
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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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\fBsetHandleSize()\fP
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.RE
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.PP
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.PP
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Definition at line 326 of file qwt_slider\&.cpp\&.
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.SS "bool QwtSlider::hasGroove () const"
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.PP
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\fBReturns\fP
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.RS 4
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True, when the groove is visible
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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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\fBsetGroove()\fP, \fBhasTrough()\fP
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.RE
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.PP
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.PP
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Definition at line 904 of file qwt_slider\&.cpp\&.
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.SS "bool QwtSlider::hasTrough () const"
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.PP
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\fBReturns\fP
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.RS 4
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True, when the trough is visible
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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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\fBsetTrough()\fP, \fBhasGroove()\fP
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.RE
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.PP
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.PP
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Definition at line 875 of file qwt_slider\&.cpp\&.
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.SS "bool QwtSlider::isScrollPosition (const QPoint & pos) const\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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.PP
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Determine what to do when the user presses a mouse button\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpos\fP Mouse position
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.RE
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.PP
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\fBReturn values\fP
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.RS 4
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\fITrue,when\fP \fBhandleRect()\fP contains pos
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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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\fBscrolledTo()\fP
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.RE
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.PP
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.PP
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Implements \fBQwtAbstractSlider\fP\&.
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.PP
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Definition at line 503 of file qwt_slider\&.cpp\&.
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.SS "QSize QwtSlider::minimumSizeHint () const\fC [override]\fP, \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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\fBSee also\fP
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.RS 4
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\fBsizeHint()\fP
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.RE
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.PP
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.PP
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Definition at line 922 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::mousePressEvent (QMouseEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Mouse press event handler
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Mouse event
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtAbstractSlider\fP\&.
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.PP
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Definition at line 547 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::mouseReleaseEvent (QMouseEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Mouse release event handler
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Mouse event
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtAbstractSlider\fP\&.
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.PP
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Definition at line 606 of file qwt_slider\&.cpp\&.
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.SS "Qt::Orientation QwtSlider::orientation () const"
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.PP
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\fBReturns\fP
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.RS 4
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Orientation
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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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\fBsetOrientation()\fP
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.RE
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.PP
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.PP
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Definition at line 202 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::paintEvent (QPaintEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Qt paint event handler
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Paint event
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.RE
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.PP
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.PP
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Definition at line 675 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::resizeEvent (QResizeEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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Qt resize event handler
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.PP
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\fBParameters\fP
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.RS 4
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\fIevent\fP Resize event
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.RE
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.PP
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.PP
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Definition at line 700 of file qwt_slider\&.cpp\&.
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.SS "const \fBQwtScaleDraw\fP * QwtSlider::scaleDraw () const"
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.PP
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\fBReturns\fP
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.RS 4
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the scale draw of the slider
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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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\fBsetScaleDraw()\fP
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.RE
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.PP
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.PP
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Definition at line 363 of file qwt_slider\&.cpp\&.
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.SS "\fBQwtSlider::ScalePosition\fP QwtSlider::scalePosition () 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 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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\fBsetScalePosition()\fP
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.RE
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.PP
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.PP
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Definition at line 230 of file qwt_slider\&.cpp\&.
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.SS "double QwtSlider::scrolledTo (const QPoint & pos) const\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
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.PP
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Determine the value for a new position of the slider handle\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpos\fP Mouse 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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Value for the mouse position
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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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\fBisScrollPosition()\fP
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.RE
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.PP
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.PP
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Implements \fBQwtAbstractSlider\fP\&.
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.PP
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Definition at line 526 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setBorderWidth (int width)"
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.PP
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Change the slider's border width\&. The border width is used for drawing the slider handle and the trough\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIwidth\fP Border width
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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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\fBborderWidth()\fP
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.RE
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.PP
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.PP
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Definition at line 244 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setGroove (bool on)"
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En/Disable the groove
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.PP
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The slider can be customized by showing a groove for the handle\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIon\fP When true, the groove is visible
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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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\fBhasGroove()\fP, setThrough()
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.RE
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.PP
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.PP
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Definition at line 889 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setHandleSize (const QSize & size)"
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.PP
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Set the slider's handle size\&. When the size is empty the slider handle will be painted with a default size depending on its \fBorientation()\fP and backgroundStyle()\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIsize\fP New size
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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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\fBhandleSize()\fP
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.RE
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.PP
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.PP
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Definition at line 311 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setOrientation (Qt::Orientation orientation)"
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.PP
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Set the orientation\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIorientation\fP Allowed values are Qt::Horizontal and Qt::Vertical\&.
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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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\fBorientation()\fP, \fBscalePosition()\fP
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.RE
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.PP
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.PP
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Definition at line 175 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setScaleDraw (\fBQwtScaleDraw\fP * scaleDraw)"
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.PP
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Set a scale draw\&. For changing the labels of the scales, it is necessary to derive from \fBQwtScaleDraw\fP and overload \fBQwtScaleDraw::label()\fP\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIscaleDraw\fP ScaleDraw object, that has to be created with new and will be deleted in \fB~QwtSlider()\fP or the next call of \fBsetScaleDraw()\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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scaleDraw()
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.RE
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.PP
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.PP
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Definition at line 344 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setScalePosition (\fBScalePosition\fP scalePosition)"
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.PP
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Change the position of the scale\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIscalePosition\fP Position of 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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\fBScalePosition\fP, \fBscalePosition()\fP
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.RE
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.PP
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.PP
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Definition at line 213 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setSpacing (int spacing)"
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.PP
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Change the spacing between trough and scale\&. A spacing of 0 means, that the backbone of the scale is covered by the trough\&.
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.PP
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The default setting is 4 pixels\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIspacing\fP Number of pixels
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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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\fBspacing()\fP;
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.RE
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.PP
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.PP
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Definition at line 278 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setTrough (bool on)"
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En/Disable the trough
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.PP
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The slider can be customized by showing a trough for the handle\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIon\fP When true, the groove is visible
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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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\fBhasTrough()\fP, \fBsetGroove()\fP
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.RE
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.PP
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.PP
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Definition at line 860 of file qwt_slider\&.cpp\&.
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.SS "void QwtSlider::setUpdateInterval (int interval)"
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.PP
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Specify the update interval for automatic scrolling\&. The minimal accepted value is 50 ms\&.
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.PP
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\fBParameters\fP
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.RS 4
|
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\fIinterval\fP Update interval in milliseconds
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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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\fBsetUpdateInterval()\fP
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.RE
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.PP
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.PP
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Definition at line 395 of file qwt_slider\&.cpp\&.
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.SS "QSize QwtSlider::sizeHint () const\fC [override]\fP, \fC [virtual]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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\fBminimumSizeHint()\fP
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.RE
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.PP
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.PP
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Definition at line 912 of file qwt_slider\&.cpp\&.
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.SS "QRect QwtSlider::sliderRect () const\fC [protected]\fP"
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.PP
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\fBReturns\fP
|
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.RS 4
|
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Bounding rectangle of the slider - without the scale
|
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.RE
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.PP
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.PP
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Definition at line 1014 of file qwt_slider\&.cpp\&.
|
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.SS "int QwtSlider::spacing () const"
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.PP
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\fBReturns\fP
|
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.RS 4
|
|
Number of pixels between slider and scale
|
|
.RE
|
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.PP
|
|
\fBSee also\fP
|
|
.RS 4
|
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\fBsetSpacing()\fP
|
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.RE
|
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.PP
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.PP
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Definition at line 296 of file qwt_slider\&.cpp\&.
|
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.SS "void QwtSlider::timerEvent (QTimerEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
|
|
Timer event handler
|
|
.PP
|
|
Handles the timer, when the mouse stays pressed inside the \fBsliderRect()\fP\&.
|
|
.PP
|
|
\fBParameters\fP
|
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.RS 4
|
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\fIevent\fP Mouse event
|
|
.RE
|
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.PP
|
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.PP
|
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Definition at line 633 of file qwt_slider\&.cpp\&.
|
|
.SS "int QwtSlider::updateInterval () const"
|
|
|
|
.PP
|
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\fBReturns\fP
|
|
.RS 4
|
|
Update interval in milliseconds for automatic scrolling
|
|
.RE
|
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.PP
|
|
\fBSee also\fP
|
|
.RS 4
|
|
\fBsetUpdateInterval()\fP
|
|
.RE
|
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.PP
|
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|
|
.PP
|
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Definition at line 404 of file qwt_slider\&.cpp\&.
|
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.SH "Author"
|
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.PP
|
|
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
|