[cable] When are wrapped classes loaded ?

[Brad King]

Luis,

>   from a Tcl script. When I check the .so library
>   using "nm -C libraryName.so", the Methods of ImageIOFactory
>   appear on the listing. However the command wrap::ListClasses
>   doesn't show this class. It show correctly other classes
>   that have also been wrapped though.
> So, my question is : What triggers the loading of a class
> in Tcl ?
The class has to be listed in the CABLE_WRAP_TCL command.  The reason
those symbols are showing up is because they are instantiated by the calls
to the wrapped methods in other classes.

>   If I have a class B deriving from a class A, and I want
>   to wrap "B", should I also wrap the base class "A" ?
Yes, you need to wrap class A to get its methods.  This prevents bloat
from each subclass having wrappers for all its superclass's methods.

-Brad