📄 8－hierarchy browser.mht
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Subject: Hierarchy Browser
Date: Thu, 15 May 2008 14:47:24 +0800
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<H1 class=3DChapterTitle><A name=3DpgfId-996755></A><A=20
name=3D"Hierarchy Browser"></A><A name=3Dmarker-1171507></A>Hierarchy=20
Browser <IMG=20
src=3D"http://sourcenav.sourceforge.net/online-docs/userguide/clhierbrws-=
1.gif">=20
<DIV><IMG=20
src=3D"http://sourcenav.sourceforge.net/online-docs/userguide/clhierbrws-=
2.gif">=20
</DIV></H1>
<P class=3DBody><A name=3DpgfId-996757></A><EM =
class=3DEmphasis>Inheritance</EM><A=20
name=3Dmarker-997120></A>, a type of relationship between objects, =
allows one=20
object to share behavior with one or more other objects. Inheritance =
provides a=20
basic mechanism for the reuse of code. Sharing with more than one is =
known as=20
<EM class=3DEmphasis>multiple</EM> <EM =
class=3DItalics>inheritance</EM><A=20
name=3Dmarker-997121></A>.</P>
<P class=3DBody><A name=3DpgfId-1179734></A>The <A =
name=3Dmarker-1171504></A><SPAN=20
class=3DBold>Hierarchy Browser</SPAN> can display the entire class =
hierarchy,=20
including the <A name=3Dmarker-1184040></A>superclasses and <A=20
name=3Dmarker-1184045></A>subclasses of a selected class. This helps you =
understand class hierarchy trees, which in turn helps you to reuse =
existing=20
code.</P>
<P class=3DBody><A name=3DpgfId-1179739></A>A baseclass is a top-level =
class in the=20
class hierarchy. It does not inherit from any other class; other classes =
inherit=20
from it.</P>
<P class=3DBody><A name=3DpgfId-1179740></A>A class <SPAN =
class=3DBold>a</SPAN> is=20
said to be a superclass of class <SPAN class=3DBold>b</SPAN> when class =
<SPAN=20
class=3DBold>b</SPAN> inherits from <SPAN class=3DBold>a</SPAN> or =
another class=20
that inherits from <SPAN class=3DBold>a</SPAN>.</P>
<P class=3DBody><A name=3DpgfId-1179741></A>A class <SPAN =
class=3DBold>a</SPAN> is=20
said to be a subclass of class <SPAN class=3DBold>b</SPAN> when class =
<SPAN=20
class=3DBold>a</SPAN> inherits from <SPAN class=3DBold>b</SPAN> or =
another class=20
that inherits from <SPAN class=3DBold>b</SPAN>.</P>
<P class=3DBody><A name=3DpgfId-1179742></A>If class <SPAN =
class=3DBold>a</SPAN> is a=20
superclass of class <SPAN class=3DBold>b</SPAN>, then class <SPAN=20
class=3DBold>b</SPAN> is a subclass of class <SPAN =
class=3DBold>a</SPAN>.</P>
<H2 class=3DHeading1><A name=3DpgfId-1152137></A><A =
name=3D29822></A>Using the=20
Hierarchy Browser</H2>
<P class=3DBody><A name=3DpgfId-1152139></A>Start the <A=20
name=3Dmarker-1152138></A><SPAN class=3DBold>Hierarchy Browser </SPAN>in =
one of the=20
following ways:</P>
<UL>
<LI class=3DBullet>
<P class=3DBody><A name=3DpgfId-1162427></A>from the <SPAN=20
class=3DBold>Windows</SPAN> menu, select <SPAN class=3DBold>New View =
</SPAN><EM=20
class=3DArrow>-></EM> <SPAN class=3DBold>Hierarchy</SPAN>. </P>
<LI class=3DBullet>
<P class=3DBody><A name=3DpgfId-1162428></A>click the <SPAN=20
class=3DBold>Hierarchy</SPAN> toolbar button. </P>
<LI class=3DBullet>
<P class=3DBody><A name=3DpgfId-1162431></A>choose the <SPAN=20
class=3DBold>Hierarchy</SPAN> tab in the <SPAN =
class=3DBold>Editor</SPAN>.=20
</P></LI></UL>
<P class=3DFigureTitle><A name=3DpgfId-1001340></A><A =
name=3D24371></A><A=20
name=3Dmarker-1042098></A>Hierarchy Browser Window</P>
<DIV><IMG=20
src=3D"http://sourcenav.sourceforge.net/online-docs/userguide/clhierbrws-=
3.gif">=20
</DIV>
<H3 class=3DHeading2><A name=3DpgfId-1001351></A><A =
name=3Dmarker-1001350></A>Tools=20
Menu</H3>
<P class=3DBody><A name=3DpgfId-1001360></A>The <SPAN =
class=3DBold>Hierarchy</SPAN>=20
menu, accessed from the <SPAN class=3DBold>Tools</SPAN> menu, contains =
the=20
following items, which control how the class hierarchies are =
displayed.</P>
<P class=3DBody><A name=3DpgfId-1001352></A>Show Superclasses<BR>
<P class=3DBodyHang1>Limits the <A name=3Dmarker-1001353></A>hierarchy =
to the=20
superclasses (and their subclasses) of the selected class. </P>
<P class=3DBody><A name=3DpgfId-1001354></A>Show Subclasses<BR>
<P class=3DBodyHang1>Limits the hierarchy to the subclasses of the =
selected class.=20
</P>
<P class=3DBody><A name=3DpgfId-1001355></A>Show All<BR>
<P class=3DBodyHang1>This is the default for this menu.</P>
<P class=3DBody><A name=3DpgfId-1171245></A>Display file names<BR>
<P class=3DBodyHang1>Displays the file names of the superclasses and=20
subclasses.</P>
<H3 class=3DHeading2><A name=3DpgfId-1152151></A><A =
name=3D29305></A>Class/Hierarchy=20
<A name=3Dmarker-1171510></A>Preferences</H3>
<P class=3DBody><A name=3DpgfId-1152152></A>Many of the settings that =
control how=20
the <SPAN class=3DBold>Hierarchy Browser</SPAN> window functions are =
located in=20
the <SPAN class=3DBold>Class/Hierarchy</SPAN> tab of the <SPAN=20
class=3DBold>Preferences</SPAN> dialog. To find this dialog:</P>
<OL>
<LI class=3DNumbered>
<P class=3DBody><A name=3DpgfId-1067161></A>In the <SPAN =
class=3DBold>Symbol=20
Browser</SPAN>, from the <SPAN class=3DBold>File</SPAN> menu, select =
<SPAN=20
class=3DBold>Project Preferences</SPAN>. In the <SPAN =
class=3DBold>Hierarchy=20
Browser</SPAN>, from the <SPAN class=3DBold>File</SPAN> menu, select =
<SPAN=20
class=3DBold>View Preferences</SPAN>. </P>
<LI class=3DNumberedNext>
<P class=3DBody><A name=3DpgfId-1067170></A>Choose the <SPAN=20
class=3DBold>Class/Hierarchy</SPAN> tab. </P></LI></OL>
<P class=3DFigureTitle><A name=3DpgfId-1001264></A><A =
name=3D56758></A>Class/Hierarchy=20
Tab of the Preferences Dialog<A name=3D40031></A> </P>
<DIV><IMG=20
src=3D"http://sourcenav.sourceforge.net/online-docs/userguide/clhierbrws-=
4.gif">=20
</DIV>
<H5 class=3DHeading4><A name=3DpgfId-1001239></A>Class</H5>
<P class=3DBody><A name=3DpgfId-1118698></A>Go To<BR>
<P class=3DBodyHang1>Select <A name=3Dmarker-1179438></A><SPAN=20
class=3DBold>Declaration</SPAN> if you want the <SPAN class=3DBold>Class =
Browser</SPAN> to display the prototype of the function; select <SPAN=20
class=3DBold>Implementation</SPAN> if you want to see the actual =
code.</P>
<P class=3DBody><A name=3DpgfId-1118699></A>Orientation<BR>
<P class=3DBodyHang1>Select <SPAN class=3DBold>Horizontal</SPAN> to have =
the <SPAN=20
class=3DBold>Hierarchy Browser</SPAN> appear below the <SPAN =
class=3DBold>Class=20
Browser</SPAN>; select <SPAN class=3DBold>Vertical</SPAN> to have the =
<SPAN=20
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