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Add first use cases to the document

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@627 a95241bf-73f2-0310-859d-f6bbb57e9c96
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jrand 2002-08-07 05:08:56 +00:00
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docs/develop/app/usecases/BPropertyInfoUseCases.html
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<HTML>
<!-- $Id: BPropertyInfoUseCases.html,v 1.1 2002/08/01 03:15:10 jrand Exp $ -->
<!-- $Id: BPropertyInfoUseCases.html,v 1.2 2002/08/07 05:08:56 jrand Exp $ -->
<HEAD>
<TITLE>BPropertyInfo Use Cases and Implementation Details</TITLE>
</HEAD>
@ -37,9 +37,34 @@ made it into the BeBook. For the latest, refer to the
<OL>
<LI><P><B>Construction 1:</B> A BPropertyInfo can be created...</P></LI>
<LI><P><B>Construction 1:</B> A BPropertyInfo can be created with 0 to 3 construction arguments.
With no arguments, the BPropertyInfo has no "property_info" or "value_info" structures. If one
argument is specified, it must be a pointer to the property_info structure for the BPropertyInfo.
If two arguments are specified, the first is the property_info pointer and the second is the
value_info structure. If three arguments are specified, the first two are the same as indicated
and the third is a flag which indicates that the BPropertyInfo class should "delete[]" the
passed in pointers on destruction if true.</P></LI>
<LI><P><B>Destruction:</B> ...</P></LI>
<LI><P><B>Destruction:</B> On destruction, a BPropertyInfo class does nothing unless the third
argument (free_on_delete flag) at construction was true. If this argument was true, the
BPropertyInfo class performs a "delete[]" on the pointers passed in at construction time.</P></LI>
<LI><P><B>Properties:</B> The Properties() member function returns the first argument passed in
at construction time of the BPropertyInfo or NULL if it was constructed with no arguments.</P></LI>
<LI><P><B>Values:</B> The Values() member function returns the second argument passed in
at construction time of the BPropertyInfo or NULL if it was constructed with one or fewer
arguments.</P></LI>
<LI><P><B>Count Properties:</B> The CountProperties() member function returns the number of
elements in the NULL terminated array of property_info structures passed in as the first argument
at construction time. If the BPropertyInfo class was constructed with no arguments, 0 is
returned.</P></LI>
<LI><P><B>Count Values:</B> The CountValues() member function returns the number of
elements in the NULL terminated array of value_info structures passed in as the second argument
at construction time. If the BPropertyInfo class was constructed with one or fewer arguments, 0 is
returned.</P></LI>
</OL>