opycaml / IDL.txt

To add things:

- Edit <*> files. <*.idl> are created from <*>.
- If you create new <*> files, add include lines of <*.idl> in, and add entries to IDLS in OMakefile.


In addition to the CamlIDL attributes, there are some additional attributes:

[option] : Pointer value may be NULL. The corresponding ML type becomes _ option.

[new] : For return type only. It returns a new reference. Without this attribute, objects references are considered borrowed.

[stolen] : For argument only. The function ``steals'' reference of the argument.

[internal] : For function name only. ML function is prefixed with ``_internal_''. A Wrapper ML code should be writtein in

[wrap] : C function needs manual wrapping. Stub calls <function name>_wrap instead of <function name>.
         Some example are found in auto.h

Currently these new attributes are implemented by pretty dirty perl hack. They may not be used in conjunction.