rdnzl-devel April 2012

rdnzl-devel@common-lisp.net

3 participants
2 discussions

[rdnzl-devel] Generic Methods patch
by Brian Connoy 19 Apr '12

19 Apr '12

As Edi recently notes, he is unavailable to maintain RDNZL. A few days ago I received from LispWorks a possible RDNZL patch pertaining to Generic Methods. I've not the aptitude to have prepared it myself, nor the time now to thoroughly test it. As LispWorks states, "The Generic Method lookup is currently written in Lisp, which means that it allocates quite a lot. If that becomes a problem, then it could be rewritten in C++ for further support incident(s) and added to the RDNZL.dll (built from rdnzl-cpp)." I'd consider it my small contribution to the Lisp community to offer this patch and pay LispWorks for a C++ rewrite, if necessary. But I need to turn to the rest of you for testing and eventual patching of RDNZL. I'd otherwise pass this along to the RDNZL maintainer ... but they have yet to appoint themself. ;^) For now I suppose the patch could be emailed to those of you interested in trying it out. You are welcome to contact me. Cheers, Brian Connoy

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[rdnzl-devel] .NET Picture Viewer in RDNZL
by Ron Parker 17 Apr '12

17 Apr '12

I've posted a RDNZL port of the .NET Picture Viewer tutorial on github, https://github.com/rdparker/cl-picture-viewer. This was mostly a learning experience for me but I thought it might come in handy for others. It's neither great Lisp nor highly informed .NET code, but it is a complete application. Basically I worked through the C# demo, then peered into the code and hand translated it to what is in the repo. But now I have an idea of how to approach creating a .NET interface for a personal research project. In the course of writing this a couple questions arose. 1. Is there anyway to call BeginInit on a PictureBox without resorting to C++? Attempting [BeginInit (cast picture-box "ISupportInitialize")] results in a cast error similar to the IConvertible message referred to in http://lists.common-lisp.net/pipermail/rdnzl-devel/2007-April/000390.html. 2. Is it possible to override random method in .NET object via RDNZL? As an example in the C# code there is an implementation of Dispose, which I was uncertain if I needed to or how to duplicate it: protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } Edi thank you for writing RDNZL. It has already saved me a lot of time. I'd looked into the managed-unmanaged C++ interop bits of .NET and was not looking forward to writing it all myself. Thanks, Ron Parker

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rdnzl-devel April 2012