Qt 4 QtRuby hello world working

I've just got hello world working with QtRuby and Qt 4:

require 'Qt'

a = Qt::Application.new(ARGV) hello = Qt:: PushButton.new('Hello World!', nil) hello.resize(100, 30) #a.mainWidget = hello hello.show() a.exec()

The setMainWidget call is commented out because that method doesn't exist anymore. I still need to get signals/slots and on the fly metaObject creation working, but pretty much everything else is there. So bring on qt_metacall()! I'm hoping its array of void * method args with be a good match for the pretty similar void * array of args in the Smoke runtime.

I spent about a day getting working the code generation of the Smoke library against the Qt4 headers, and it now has a grand total of 352 classes which seems a good start. I haven't included any of the Q3* compatibility classes or methods - I'm not sure if they're a good idea for ruby.

It took another short day to get the QtRuby runtime to compile - it wasn't too bad. I ran the sources through qt3to4 first, then just hacked away fixing anything which didn't compile, and commented out anything to do with signals/slots. Qt4 does actually seem that bit tidier that Qt3, which is a good start.

This Qt code: QAsciiDictSmoke::Index methcache(2179); ... Smoke::Index *r = classcache.find(className); ... QObjectListIt it( *l ); // iterate over the children QObject *child;

while ( (child = it.current()) != 0 ) { ++it; obj = getPointerObject(child); if (obj != Qnil) { rb_gc_mark(obj); }

mark_qobject_children(child);

} Becomes: QHash<QString, Smoke::Index *> methcache; ... Smoke::Index *r = classcache.value(className); ... QObjectList::const_iterator it; // iterate over the children QObject *child;

for (it = l.constBegin(); it != l.constEnd(); ++it) { child = *it; obj = getPointerObject(child); if (obj != Qnil) { rb_gc_mark(obj); }

mark_qobject_children(child);

} Looking through the diffs with Kompare, thats about it - just a lot of pretty minor changes. I need to find out how much work is involved in getting rid of the Q3* in the code, but the porting guide in the docs seems pretty detailed about how to do that. In fact getting it working so easily seems a bit of an anti-climax, maybe I was hoping for a bit more of a struggle ;)