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Committed Documentation patch for: [ 1941709 ] document (no)valuewrapper %features

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10374 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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Jason Stewart 2008-04-14 04:57:11 +00:00
commit aeef2d516d
1 changed files with 20 additions and 4 deletions
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24
Doc/Manual/SWIGPlus.html
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@ -1431,10 +1431,10 @@ default constructor.
</p> </p>
<p> <p>
If <tt>Vector</tt> is defined as class in the interface, but it does If <tt>Vector</tt> is defined as class in the interface, but it does not
not support a default constructor, SWIG changes the wrapper code by support a default constructor, SWIG changes the wrapper code by encapsulating
encapsulating the arguments inside a special C++ template wrapper the arguments inside a special C++ template wrapper class, through a process
class. This produces a wrapper that looks like this: called the "Fulton Transform". This produces a wrapper that looks like this:
</p> </p>
<div class="code"> <div class="code">
@ -1457,6 +1457,22 @@ can be found by reading the SWIG wrapper code. This class is really nothing more
wrapper around a pointer. wrapper around a pointer.
</p> </p>
<p>
Although SWIG usually detects the classes to which the fulton transform should
be applied, in some situations it's necessary to override it. That's done with
<tt>%feature("valuewrapper")</tt> and <tt>%feature("novaluewraper")</tt>:
<div class="code"><pre>
%feature("novaluewrapper") A;
class A;
%feature("valuewrapper") B;
struct B {
B();
// ....
};
</pre></div>
</p>
<p> <p>
<b>Note:</b> this transformation has no effect on typemaps <b>Note:</b> this transformation has no effect on typemaps
or any other part of SWIG---it should be transparent except that you or any other part of SWIG---it should be transparent except that you