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+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>The 'Big Picture'</title>
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+ <a href="index.html">
+<font color="#004faf">Home</font></a>
+ | <a href="classes.html">
+<font color="#004faf">All&nbsp;Classes</font></a>
+ | <a href="mainclasses.html">
+<font color="#004faf">Main&nbsp;Classes</font></a>
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+<font color="#004faf">Annotated</font></a>
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+<font color="#004faf">Functions</font></a>
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+<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>The 'Big Picture'</h1>
+
+
+<p>
+<p> <center><img src="chart-forms.png" alt="The chart application's dialogs"></center>
+<p> The <tt>chart</tt> program allows users to create, save, load and visualise
+simple data sets. Each data element that the user enters can be given
+a color and pattern for the pie segment or bar, some label text and
+the text's position and color. The <tt>Element</tt> class is used to
+represent data elements.
+<p> The program consists of a simple <tt>main.cpp</tt> that loads the chart
+form. The chart form has a menubar and toolbar which provide access to
+the program's functionality. The program provides two dialogs, one to
+set options, and the other to create and edit a data set. Both dialogs
+are launched from chart form menu options or toolbar buttons.
+<p> The chart form's main widget is a <a href="qcanvasview.html">QCanvasView</a> which displays the
+<a href="qcanvas.html">QCanvas</a> on which we draw the pie chart or bar graph. We subclass
+QCanvasView to obtain some specialised behaviour. Similarly we
+subclass the <a href="qcanvastext.html">QCanvasText</a> class (used to place text items on a canvas)
+since we require slightly more than the standard class provides.
+<p> The project file, <tt>chart.pro</tt>, is used to create the Makefile that is
+used to build the application.
+<p> <p align="right">
+<a href="tutorial2-01.html">&laquo; Introduction</a> |
+<a href="tutorial2.html">Contents</a> |
+<a href="tutorial2-03.html">Data Elements &raquo;</a>
+</p>
+<p>
+<!-- eof -->
+<p><address><hr><div align=center>
+<table width=100% cellspacing=0 border=0><tr>
+<td>Copyright &copy; 2007
+<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
+<td align=right><div align=right>Qt 3.3.8</div>
+</table></div></address></body>
+</html>