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<title>Qwt User's Guide: QwtPickerPolygonMachine Class Reference</title>
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<h1>QwtPickerPolygonMachine Class Reference</h1><!-- doxytag: class="QwtPickerPolygonMachine" --><!-- doxytag: inherits="QwtPickerMachine" -->Inheritance diagram for QwtPickerPolygonMachine:<p><center><img src="class_qwt_picker_polygon_machine__inherit__graph.png" border="0" usemap="#_qwt_picker_polygon_machine__inherit__map" alt="Inheritance graph"></center>
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center>Collaboration diagram for QwtPickerPolygonMachine:<p><center><img src="class_qwt_picker_polygon_machine__coll__graph.png" border="0" usemap="#_qwt_picker_polygon_machine__coll__map" alt="Collaboration graph"></center>
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="class_qwt_picker_polygon_machine-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
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A state machine for polygon selections.
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Pressing QwtEventPattern::MouseSelect1 or QwtEventPattern::KeySelect1 starts the selection and selects the first point, or appends a point. Pressing QwtEventPattern::MouseSelect2 or QwtEventPattern::KeySelect2 appends the last point and terminates the selection.<p>
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<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_event_pattern.html#f48dc808ac5e125eeed41a4c0285d1ea">QwtEventPattern::MousePatternCode</a>, <a class="el" href="class_qwt_event_pattern.html#8fb57ceb9982d5583a1bf568e37d3007">QwtEventPattern::KeyPatternCode</a> </dd></dl>
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Definition at line <a class="el" href="qwt__picker__machine_8h-source.html#l00146">146</a> of file <a class="el" href="qwt__picker__machine_8h-source.html">qwt_picker_machine.h</a>.<table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">CommandList</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_polygon_machine.html#744ff47737743d062c8f544f7a8383e5">transition</a> (const <a class="el" href="class_qwt_event_pattern.html">QwtEventPattern</a> &, const QEvent *)</td></tr>
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<hr><h2>Member Function Documentation</h2>
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<a class="anchor" name="744ff47737743d062c8f544f7a8383e5"></a><!-- doxytag: member="QwtPickerPolygonMachine::transition" ref="744ff47737743d062c8f544f7a8383e5" args="(const QwtEventPattern &, const QEvent *)" --><p>
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<td class="md" nowrap valign="top"><a class="el" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">QwtPickerMachine::CommandList</a> QwtPickerPolygonMachine::transition </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const <a class="el" href="class_qwt_event_pattern.html">QwtEventPattern</a> & </td>
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<td class="mdname" nowrap>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>const QEvent * </td>
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<td class="mdname" nowrap></td>
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<td class="md">) </td>
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<td class="md" colspan="2"><code> [virtual]</code></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Implements <a class="el" href="class_qwt_picker_machine.html#471bbb0faec23939aadb94e5e5f9ef73">QwtPickerMachine</a>.
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Definition at line <a class="el" href="qwt__picker__machine_8cpp-source.html#l00300">300</a> of file <a class="el" href="qwt__picker__machine_8cpp-source.html">qwt_picker_machine.cpp</a>.
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References <a class="el" href="qwt__event__pattern_8cpp-source.html#l00193">QwtEventPattern::mouseMatch()</a>, <a class="el" href="qwt__picker__machine_8cpp-source.html#l00032">QwtPickerMachine::setState()</a>, and <a class="el" href="qwt__picker__machine_8cpp-source.html#l00026">QwtPickerMachine::state()</a>. </td>
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