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<H3><A NAME="10_7_3">10.7.3 Milestones</A></H3>
<P> Milestones are similar to bars but have no end date since milestones
 just apply to one single date. Milestones are created much the same way
 as activities but using method MileStone() instead.</P>
<P> The full signature for milestones are<DIV class="phpscript"><CODE><FONT
color="#000000"> <FONT color="#0000BB">&nbsp;</FONT><FONT color="#007700">
function&nbsp;</FONT><FONT color="#0000BB">MileStone</FONT><FONT color="#007700">
(</FONT><FONT color="#0000BB">$aVPos</FONT><FONT color="#007700">,</FONT><FONT
color="#0000BB">$aTitle</FONT><FONT color="#007700">,</FONT><FONT color="#0000BB">
$aDate</FONT><FONT color="#007700">,</FONT><FONT color="#0000BB">
$aCaption</FONT><FONT color="#007700">)</FONT><FONT color="#0000BB"></FONT>
</FONT></CODE></DIV></P>
<P></P>
<P></P>
<TABLE border="0">
<TR><TD valign="top">
<!--span style=&quot;font-family:times;font-size:85%;font-weight:bold;&quot;-->
<CODE><FONT color="#000000"> <FONT color="#0000BB">&nbsp;$aVPos&nbsp;</FONT></FONT>
</CODE></TD><TD valign="top">&nbsp;</TD><TD>The vertical position for the
 bar, [0..n]</TD></TR>
<TR><TD valign="top">
<!--span style=&quot;font-family:times;font-size:85%;font-weight:bold;&quot;-->
<CODE><FONT color="#000000"> <FONT color="#0000BB">&nbsp;$aTitle&nbsp;</FONT></FONT>
</CODE></TD><TD valign="top">&nbsp;</TD><TD>Title for the activity</TD></TR>
<TR><TD valign="top">
<!--span style=&quot;font-family:times;font-size:85%;font-weight:bold;&quot;-->
<CODE><FONT color="#000000"> <FONT color="#0000BB">&nbsp;$aDate&nbsp;</FONT></FONT>
</CODE></TD><TD valign="top">&nbsp;</TD><TD>Date for the milestone</TD></TR>
<TR><TD valign="top">
<!--span style=&quot;font-family:times;font-size:85%;font-weight:bold;&quot;-->
<CODE><FONT color="#000000"> <FONT color="#0000BB">&nbsp;$aCaption&nbsp;</FONT></FONT>
</CODE></TD><TD valign="top">&nbsp;</TD><TD>Text to the right of the
 milestone</TD></TR>
</TABLE>
<P> Valid milestones are for example</P>
<UL>
<LI><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
&nbsp;$milestone&nbsp;</FONT><FONT color="#007700">=&nbsp;new&nbsp;</FONT><FONT color="#0000BB">
MileStone</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">3</FONT><FONT
color="#007700">,</FONT><FONT color="#DD0000">&quot;Code&nbsp;complete&quot;</FONT><FONT
color="#007700">,</FONT><FONT color="#DD0000">&quot;2001-12-01&quot;</FONT><FONT color="#007700">
);</FONT><FONT color="#0000BB"></FONT></FONT></CODE></DIV>
<P></P>
</LI>
<LI><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
&nbsp;$milestone&nbsp;</FONT><FONT color="#007700">=&nbsp;new&nbsp;</FONT><FONT color="#0000BB">
MileStone</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">3</FONT><FONT
color="#007700">,</FONT><FONT color="#DD0000">&quot;Code&nbsp;complete&quot;</FONT><FONT
color="#007700">,</FONT><FONT color="#DD0000">&quot;2001-12-01&quot;</FONT><FONT color="#007700">
,</FONT><FONT color="#DD0000">&quot;(2001-12-01)&quot;</FONT><FONT color="#007700">
);</FONT><FONT color="#0000BB"></FONT></FONT></CODE></DIV>
<P></P>
</LI>
</UL>
<P> By default milestones are rendered as a filled &quot;Diamond&quot; shape. This
 may be optionally modified. The actual shape is specified by the 'mark'
 property of milestone which is an instance of the PlotMark() class
 (same class responsible for the marks in line graphs).</P>
<P> To change the shape of a milestone to, say a triangle, you use the
 SetType() method as in<DIV class="phpscript"><CODE><FONT color="#000000">
 <FONT color="#0000BB">&nbsp;$milestone</FONT><FONT color="#007700">-&gt;</FONT><FONT
color="#0000BB">mark</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
SetType</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">
MARK_DTRIANGLE</FONT><FONT color="#007700">)</FONT><FONT color="#0000BB">
</FONT></FONT></CODE></DIV></P>
<P> Let's put this into practice and add a milestone to our previous
 example by adding the following two lines of code which result in
 Figure 147 shown below.<DIV class="example">
<BR> <A href="exframes/frame_ganttex04.html" target="blank"><IMG border="0"
HEIGHT="189"  src="img/ganttex04.png" WIDTH="493"></A>
<BR><B>Figure 147:</B> Illustration of how to add a milestone to a gantt
 chart <A href="exframes/frame_ganttex04.html" target="blank">[src]</A>&nbsp;
<P></P>
</DIV></P>
<P></P>
<P> You may note that by default the title color is red for milestones.
 If you like to change this to be instead, say bold black, you would
 invoke the SetColor() and SetFont() methods on the title property of
 milestones as in<DIV class="phpscript"><CODE><FONT color="#000000"> <FONT
color="#0000BB">&nbsp;$milestone</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
title</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">SetFont</FONT><FONT
color="#007700">(</FONT><FONT color="#0000BB">FF_FONT1</FONT><FONT color="#007700">
,</FONT><FONT color="#0000BB">FF_BOLD</FONT><FONT color="#007700">);
<BR></FONT><FONT color="#0000BB">$milestone</FONT><FONT color="#007700">
-&gt;</FONT><FONT color="#0000BB">title</FONT><FONT color="#007700">-&gt;</FONT><FONT
color="#0000BB">SetColor</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
&quot;black&quot;</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB"></FONT>
</FONT></CODE></DIV></P>
<P> and thew result would now (not surprisingly be)<DIV class="example">
<BR> <A href="exframes/frame_ganttex05.html" target="blank"><IMG border="0"
HEIGHT="189"  src="img/ganttex05.png" WIDTH="502"></A>
<BR><B>Figure 148:</B> Modifying the milestone title color and font <A href="exframes/frame_ganttex05.html"
target="blank">[src]</A>&nbsp;
<P></P>
</DIV></P>
<P> To modify the caption you do exactly the same but act on property
 'caption' instead of 'title', i.e.<DIV class="phpscript"><CODE><FONT color="#000000">
 <FONT color="#0000BB">&nbsp;$milestone</FONT><FONT color="#007700">-&gt;</FONT><FONT
color="#0000BB">caption</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
SetFont</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">
FF_FONT1</FONT><FONT color="#007700">,</FONT><FONT color="#0000BB">
FF_BOLD</FONT><FONT color="#007700">);
<BR></FONT><FONT color="#0000BB">$milestone</FONT><FONT color="#007700">
-&gt;</FONT><FONT color="#0000BB">caption</FONT><FONT color="#007700">-&gt;</FONT><FONT
color="#0000BB">SetColor</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
&quot;black&quot;</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB"></FONT>
</FONT></CODE></DIV></P>
<P></P>
<P> It is worth noting that you modify the bar title and caption the
 exact same way by acting on the 'title' and 'caption' property for the
 bars.</P>
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