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<HTML><HEAD><TITLE>GtkScale</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.61"><LINKREL="HOME"TITLE="GTK+ Reference Manual"HREF="index.html"><LINKREL="UP"TITLE="GTK+ Widgets and Objects"HREF="gtkobjects.html"><LINKREL="PREVIOUS"TITLE="GtkRuler"HREF="gtkruler.html"><LINKREL="NEXT"TITLE="GtkScrollbar"HREF="gtkscrollbar.html"></HEAD><BODYCLASS="REFENTRY"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"BGCOLOR="#000000"CELLPADDING="1"CELLSPACING="0"><TR><THCOLSPAN="4"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="5">GTK+ Reference Manual</FONT></TH></TR><TR><TDWIDTH="25%"BGCOLOR="#C00000"ALIGN="left"><AHREF="gtkruler.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B><<< Previous Page</B></FONT></A></TD><TDWIDTH="25%"BGCOLOR="#0000C0"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="3"><B><AHREF="index.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Home</B></FONT></A></B></FONT></TD><TDWIDTH="25%"BGCOLOR="#00C000"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="3"><B><AHREF="gtkobjects.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Up</B></FONT></A></B></FONT></TD><TDWIDTH="25%"BGCOLOR="#C00000"ALIGN="right"><AHREF="gtkscrollbar.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Next Page >>></B></FONT></A></TD></TR></TABLE></DIV><H1><ANAME="GTKSCALE">GtkScale</A></H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN38423"></A><H2>Name</H2>GtkScale -- a base class for <AHREF="gtkhscale.html">GtkHScale</A> and <AHREF="gtkvscale.html">GtkVScale</A>.</DIV><DIVCLASS="REFSYNOPSISDIV"><ANAME="AEN38428"></A><H2>Synopsis</H2><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="SYNOPSIS"> #include <gtk/gtk.h>struct <AHREF="gtkscale.html#GTKSCALE-STRUCT">GtkScale</A>;void <AHREF="gtkscale.html#GTK-SCALE-SET-DIGITS">gtk_scale_set_digits</A> (<AHREF="gtkscale.html">GtkScale</A> *scale, <AHREF=../glib/glib-basic-types.html#GINT>gint</A> digits);void <AHREF="gtkscale.html#GTK-SCALE-SET-DRAW-VALUE">gtk_scale_set_draw_value</A> (<AHREF="gtkscale.html">GtkScale</A> *scale, <AHREF=../glib/glib-basic-types.html#GBOOLEAN>gboolean</A> draw_value);void <AHREF="gtkscale.html#GTK-SCALE-SET-VALUE-POS">gtk_scale_set_value_pos</A> (<AHREF="gtkscale.html">GtkScale</A> *scale, <AHREF="gtk-standard-enumerations.html#GTKPOSITIONTYPE">GtkPositionType</A> pos);<AHREF=../glib/glib-basic-types.html#GINT>gint</A> <AHREF="gtkscale.html#GTK-SCALE-GET-VALUE-WIDTH">gtk_scale_get_value_width</A> (<AHREF="gtkscale.html">GtkScale</A> *scale); </PRE></TD></TR></TABLE></DIV><DIVCLASS="REFSECT1"><ANAME="AEN38444"></A><H2>Object Hierarchy</H2><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="SYNOPSIS"> <AHREF="gtkobject.html">GtkObject</A> +----<AHREF="gtkwidget.html">GtkWidget</A> +----<AHREF="gtkrange.html">GtkRange</A> +----GtkScale</PRE></TD></TR></TABLE></DIV><DIVCLASS="REFSECT1"><ANAME="AEN38450"></A><H2>Args</H2><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="SYNOPSIS"> "<AHREF="gtkscale.html#GTKSCALE--DIGITS">digits</A>" <AHREF=../glib/glib-basic-types.html#GINT>gint</A> : Read / Write "<AHREF="gtkscale.html#GTKSCALE--DRAW-VALUE">draw-value</A>" <AHREF=../glib/glib-basic-types.html#GBOOLEAN>gboolean</A> : Read / Write "<AHREF="gtkscale.html#GTKSCALE--VALUE-POS">value-pos</A>" <AHREF="gtk-standard-enumerations.html#GTKPOSITIONTYPE">GtkPositionType</A> : Read / Write</PRE></TD></TR></TABLE></DIV><DIVCLASS="REFSECT1"><ANAME="AEN38459"></A><H2>Description</H2><P>The <AHREF="gtkscale.html">GtkScale</A> widget is an abstract class, used only for deriving thesubclasses <AHREF="gtkhscale.html">GtkHScale</A> and <AHREF="gtkvscale.html">GtkVScale</A>.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN38465"></A><H2>Details</H2><DIVCLASS="REFSECT2"><ANAME="AEN38467"></A><H3><ANAME="GTKSCALE-STRUCT"></A>struct GtkScale</H3><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="PROGRAMLISTING">struct GtkScale;</PRE></TD></TR></TABLE><P>The <AHREF="gtkscale.html#GTKSCALE-STRUCT">GtkScale</A> struct contains the following fields.(These fields should be considered read-only. They should never be set byan application.)<DIVCLASS="INFORMALTABLE"><ANAME="AEN38473"></A><P></P><TABLEBORDER="0"WIDTH="100%"BGCOLOR="#FFF0D0"CELLSPACING="0"CELLPADDING="4"CLASS="CALSTABLE"><TBODY><TR><TDWIDTH="20%"ALIGN="LEFT"VALIGN="TOP"><AHREF=../glib/glib-basic-types.html#GUINT>guint</A> <TTCLASS="STRUCTFIELD"><I>draw_value</I></TT>;</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">non-zero if the scale's current value is displayed next to theslider.</TD></TR><TR><TDWIDTH="20%"ALIGN="LEFT"VALIGN="TOP"><AHREF=../glib/glib-basic-types.html#GUINT>guint</A> <TTCLASS="STRUCTFIELD"><I>value_pos</I></TT>;</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">the position in which the textual value is displayed, selected from<AHREF="gtk-standard-enumerations.html#GTKPOSITIONTYPE">GtkPositionType</A>.</TD></TR></TBODY></TABLE><P></P></DIV></P></DIV><HR><DIVCLASS="REFSECT2"><ANAME="AEN38489"></A><H3><ANAME="GTK-SCALE-SET-DIGITS"></A>gtk_scale_set_digits ()</H3><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="PROGRAMLISTING">void gtk_scale_set_digits (<AHREF="gtkscale.html">GtkScale</A> *scale, <AHREF=../glib/glib-basic-types.html#GINT>gint</A> digits);</PRE></TD></TR></TABLE><P>Sets the number of decimal places that are displayed in the value.</P><DIVCLASS="INFORMALTABLE"><ANAME="AEN38496"></A><P></P><TABLEBORDER="0"WIDTH="100%"BGCOLOR="#FFD0D0"CELLSPACING="0"CELLPADDING="4"CLASS="CALSTABLE"><TBODY><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>scale</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">a <AHREF="gtkscale.html">GtkScale</A>.</TD></TR><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>digits</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">the number of decimal places to display, e.g. use 1 to display 1.0,2 to display 1.00 etc. </TD></TR></TBODY></TABLE><P></P></DIV></DIV><HR><DIVCLASS="REFSECT2"><ANAME="AEN38510"></A><H3><ANAME="GTK-SCALE-SET-DRAW-VALUE"></A>gtk_scale_set_draw_value ()</H3><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="PROGRAMLISTING">void gtk_scale_set_draw_value (<AHREF="gtkscale.html">GtkScale</A> *scale, <AHREF=../glib/glib-basic-types.html#GBOOLEAN>gboolean</A> draw_value);</PRE></TD></TR></TABLE><P>Specifies whether the current value is displayed as a string next to theslider.</P><DIVCLASS="INFORMALTABLE"><ANAME="AEN38517"></A><P></P><TABLEBORDER="0"WIDTH="100%"BGCOLOR="#FFD0D0"CELLSPACING="0"CELLPADDING="4"CLASS="CALSTABLE"><TBODY><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>scale</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">a <AHREF="gtkscale.html">GtkScale</A>.</TD></TR><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>draw_value</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP"> </TD></TR></TBODY></TABLE><P></P></DIV></DIV><HR><DIVCLASS="REFSECT2"><ANAME="AEN38531"></A><H3><ANAME="GTK-SCALE-SET-VALUE-POS"></A>gtk_scale_set_value_pos ()</H3><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="PROGRAMLISTING">void gtk_scale_set_value_pos (<AHREF="gtkscale.html">GtkScale</A> *scale, <AHREF="gtk-standard-enumerations.html#GTKPOSITIONTYPE">GtkPositionType</A> pos);</PRE></TD></TR></TABLE><P>Sets the position in which the current value is displayed.</P><DIVCLASS="INFORMALTABLE"><ANAME="AEN38538"></A><P></P><TABLEBORDER="0"WIDTH="100%"BGCOLOR="#FFD0D0"CELLSPACING="0"CELLPADDING="4"CLASS="CALSTABLE"><TBODY><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>scale</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">a <AHREF="gtkscale.html">GtkScale</A>.</TD></TR><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>pos</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">the position in which the current value is displayed. </TD></TR></TBODY></TABLE><P></P></DIV></DIV><HR><DIVCLASS="REFSECT2"><ANAME="AEN38552"></A><H3><ANAME="GTK-SCALE-GET-VALUE-WIDTH"></A>gtk_scale_get_value_width ()</H3><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="PROGRAMLISTING"><AHREF=../glib/glib-basic-types.html#GINT>gint</A> gtk_scale_get_value_width (<AHREF="gtkscale.html">GtkScale</A> *scale);</PRE></TD></TR></TABLE><P>An internal function used to get the maximum width needed to display the valuestring.</P><DIVCLASS="INFORMALTABLE"><ANAME="AEN38559"></A><P></P><TABLEBORDER="0"WIDTH="100%"BGCOLOR="#FFD0D0"CELLSPACING="0"CELLPADDING="4"CLASS="CALSTABLE"><TBODY><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>scale</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">a <AHREF="gtkscale.html">GtkScale</A>.</TD></TR><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><ICLASS="EMPHASIS">Returns</I> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">the maximum width needed to display the value string. </TD></TR></TBODY></TABLE><P></P></DIV></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN38573"></A><H2>Args</H2><P></P><DIVCLASS="VARIABLELIST"><DL><DT><ANAME="GTKSCALE--DIGITS"></A>"<TTCLASS="LITERAL">digits</TT>" (<AHREF=../glib/glib-basic-types.html#GINT>gint</A> : Read / Write)</DT><DD><P>The number of decimal places that are displayed in the value.</P></DD><DT><ANAME="GTKSCALE--DRAW-VALUE"></A>"<TTCLASS="LITERAL">draw-value</TT>" (<AHREF=../glib/glib-basic-types.html#GBOOLEAN>gboolean</A> : Read / Write)</DT><DD><P></P></DD><DT><ANAME="GTKSCALE--VALUE-POS"></A>"<TTCLASS="LITERAL">value-pos</TT>" (<AHREF="gtk-standard-enumerations.html#GTKPOSITIONTYPE">GtkPositionType</A> : Read / Write)</DT><DD><P></P></DD></DL></DIV></DIV><DIVCLASS="NAVFOOTER"><BRCLEAR="all"><BR><TABLEWIDTH="100%"BORDER="0"BGCOLOR="#000000"CELLPADDING="1"CELLSPACING="0"><TR><TDWIDTH="25%"BGCOLOR="#C00000"ALIGN="left"><AHREF="gtkruler.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B><<< Previous 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