Tag Archives: c#

qyotoassemblygen progress

Some time back I have started a tool called qyotoassemblygen [0], which will hopefully ease the generation of .NET/Mono bindings based on SMOKE libraries. It basically introspects a SMOKE library and generates a System.CodeDom tree from that information. The CodeDom can then be used to generate C# code and/or compile an assembly.
Although some parts were rather difficult and had to be rewritten again and again (like checking whether a method has to be marked “override” or “virtual”), I can now announce that it”s quite stable and generates all of the Qt assemblies just fine :). I”m currently working on getting the KDE assemblies to build, which is really just a matter of sorting out *Private classes.

By using plugins the tool is not bound to Qt-based bindings, so we could as well generate assemblies for other toolkits, like Wt (for which there is already a smoke lib, thanks to Richard :)). Plugins will also make it easy to add syntactic sugar like event support for Qyoto (which I hope I can implement for KDE SC 4.5).

If everything works as expected, we can hopefully drop kalyptus completely in the next release and reduce our maintenance cost considerably 🙂

[0] http://websvn.kde.org/trunk/playground/bindings/qyotoassemblygen

Qyoto on Windows!

Now that the new smokegenerator is in trunk and generating smoke on windows shouldn”t be a pain anymore, I thought that I could dig out my nearly unused Vista partition on my laptop and start porting Qyoto to Windows.
First thing I did was removing the preinstalled Vista and installing it again to get rid of all the preinstalled crap Dell thought I needed. Next was installing Visual C++ and C# (the Express editions are free as in beer and work ok – nothing in comparison to KDevelop4 though) and KDE 4.3. Thanks to all of the KDE Windows team – you make Windows much more bearable! I also installed msys – can”t live without a proper shell anymore.

Now came the actual porting: To support MS .NET and not only Mono, I needed to add support for csc.exe (the MS C# compiler) to the existing C# macros. As I recently discovered how to add support for a new language to cmake (which lacks documentation but is really easy once you understood it) I simply rewrote the C# macros as a new cmake language plugin. Compilation was pretty straight-forward, then.
But as was to be expected, the examples simply crashed upon start. Long story short: Some of them work now and this is how it looks:

Qt tutorial t5 with Qyoto

This is still really unstable and crashes every few minutes with an AccessViolationException. Have to figure out why it does that.. But first I have to do some other things, mainly porting the remaining kalyptus-generated smoke modules to the new smokegenerator. This shouldn”t take too long, so I think I can complete the Windows port soon 🙂 So stay tuned!

Update: The AccessViolationExceptions should be fixed now. If you want to try Qyoto on Windows and have problems getting it to compile or run, please send a mail to the kde-bindings mailinglist and include the complete error and backtrace. You can also search the mailing list archives since this topic came up quite often recently.