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| From | Su Zhang <zhangsu@live.com> |
| Newsgroups | comp.lang.ruby |
| Subject | Re: Sharing data between ruby and a custom dll with Win32API |
| Date | Tue, 17 May 2011 15:00:51 -0500 |
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Hi Futar,
I suppose you are using 'p' as the return type specifier of Win32API;
this is interpreted as a pointer to a null-terminated string.Therefore,
any null byte in your array of floats will mark the end of the "string"
buffer.
In this case, I think you can simply reference the same buffer you pass
to @getkaplamatrix.
matrix2 = matrix.pack("f*")
@getKaplaMatrix.call(index, matrix2)
matrix3 = matrix2.unpack("f*")
And if you really do need to return a reference to something, you will
often have to return it as an integer address and manipulate (reference
and dereference) it through native interfaces such as RtlMoveMemory.
Su
--
Posted via http://www.ruby-forum.com/.
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Sharing data between ruby and a custom dll with Win32API "futar C." <bourinax@yopmail.com> - 2011-05-16 05:30 -0500 Re: Sharing data between ruby and a custom dll with Win32API Su Zhang <zhangsu@live.com> - 2011-05-17 15:00 -0500 Re: Sharing data between ruby and a custom dll with Win32API "futar C." <bourinax@yopmail.com> - 2011-05-18 06:24 -0500
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