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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>8.4. Key and Mouse Bindings</title><meta name="generator" content="DocBook XSL Stylesheets V1.65.1"><link rel="home" href="index.html" title="PyGTK 2.0 Tutorial"><link rel="up" href="ch-RangeWidgets.html" title="Chapter 8. Range Widgets"><link rel="previous" href="sec-CommonRangeMethods.html" title="8.3. Common Range Methods"><link rel="next" href="sec-RangeWidgetEample.html" title="8.5. Range Widget Example"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">8.4. Key and Mouse Bindings</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="sec-CommonRangeMethods.html">Prev</a> </td><th width="60%" align="center">Chapter 8. Range Widgets</th><td width="20%" align="right"> <a accesskey="n" href="sec-RangeWidgetEample.html">Next</a></td></tr></table><hr></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="sec-KeyAndMouseBindings"></a>8.4. Key and Mouse Bindings</h2></div></div><div></div></div><p>All of the GTK+ range widgets react to mouse clicks in more or
less the same way. Clicking <span class="mousebutton">button-1</span> in the
trough will cause its adjustment's <i class="parameter"><tt>page_increment</tt></i> to
be added or subtracted from its <i class="parameter"><tt>value</tt></i>, and the slider
to be moved accordingly. Clicking mouse <span class="mousebutton">button-2</span>
in the trough will jump the slider to the point at which the button was
clicked. Clicking any button on a scrollbar's arrows will cause its
adjustment's value to change <i class="parameter"><tt>step_increment</tt></i> at a
time.</p><p>Scrollbars are not focusable, thus have no key bindings. The key
bindings for the other range widgets (which are, of course, only active when
the widget has focus) do not differentiate between horizontal and vertical
range widgets.</p><p>All range widgets can be operated with the <span class="keysym">left
arrow</span>, <span class="keysym">right arrow</span>, <span class="keysym">up arrow</span> and
<span class="keysym">down arrow</span> keys, as well as with the <span><b class="keycap">Page
Up</b></span> and <span><b class="keycap">Page Down</b></span> keys. The arrows move the slider
by <i class="parameter"><tt>step_increment</tt></i>, while <span><b class="keycap">Page Up</b></span> and
<span><b class="keycap">Page Down</b></span> move it by
<i class="parameter"><tt>page_increment</tt></i>.</p><p>The user can also move the slider all the way to one end or the
other of the trough using the keyboard. This is done with the
<span><b class="keycap">Home</b></span> and <span><b class="keycap">End</b></span> keys.</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sec-CommonRangeMethods.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch-RangeWidgets.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sec-RangeWidgetEample.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">8.3. Common Range Methods </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> 8.5. Range Widget Example</td></tr></table></div></body></html>
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