GInterfaceInfo.Data was automatically set to be a GCHandle on the
interface adapter. But the generated GInterfaceInitHandlers were
not using it, just free'ing it.
But for the GInterface property support, the Data field is now used to
pass the class pointer, so casting it to a GCHandle to free it would
cause an exception.
We now don't assume anything about GInterfaceInfo.Data.
* glib/GInterfaceAdapter.cs: Fix a leak related to GCHandles not being freed.
Patch from Mike Kestner with a minor tweak by me. [Fixes#523306]
svn path=/trunk/gtk-sharp/; revision=138263
* gtk/Gtk.metadata: virtual_method rules for GInterface generation.
* generator/ReturnValue.cs (ToNative): new method for the virtual
method generation.
* generator/Parameters.cs (FromNative): null guarding.
* generator/ManagedCallString.cs: rework for interface method
generation including callback and error param support.
* generator/CallbackGen.cs: Invoker support. new class that deals
with persistence of native and wrapper delegates in native to managed
callback method signatures.
* generator/VirtualMethod.cs: support for generation of interface
methods, and all the funky parameters that come with that.
* generator/InterfaceGen.cs: Fill out the adapter implementation.
* generator/MethodBody.cs: Initialize overload. Extend ThrowsException
to support GError outside the last parameter slot.
* glib/GInterfaceAttribute.cs: New attribute to mark interfaces and
obtain adapter type.
* glib/Object.cs (AddInterfaces): interface registration method.
* glib/GInterfaceAdapter.cs: New abstract class for interface
adapter generation.
* glib/Makefile.am: add new files.
svn path=/trunk/gtk-sharp/; revision=85658
