Re: guile-gi: scancode->keyval?

[Mike Gran]

On Thu, Jun 06, 2019 at 10:16:14PM +0200, Jan Nieuwenhuizen wrote:
> Hi Mike,
> 
> I've update the Guix package and started using (send event
> (get-scancode)), which works great.  However, scancodes are somewhat
> inconvenient, iwbn to get the keyval or character through
> gdk-keyval-to-unicode.
> 
> I would expect `get-keyval' and `get-keycode' methods on event but only
> found predicate-like variants:
> 
>    (send event (get-keyval?)) => (#t 0)
>    (send event (get-keycode?)) => (#t 0)

I hadn't implemented automated wrapping of C procedures that return
output via pointer to plain C types, such as

  gboolean gdk_event_get_keyval (const GdkEvent *event,
                                 guint *keyval);

I fixed it, I think.

There are many, many unit tests to be written and memory allocations
to be checked. Sigh.


> 
> Hmm.
> 
> Then I went to look for a more low level function using the Keymap
> 
>     (let ((keymap (Keymap-get-default)))
> 
> also works and then I'm lost again...something like this might work
> 
>     (send keymap (translate-keyboard-state? scancode MODIFIER_TYPE_SHIFT_MASK 
> MODIFIER_TYPE_SHIFT_MASK))
> 
> =>
> 
>     GuileGI:ERROR:gi_giargument.c:1665:convert_interface_arg_to_object: 
> assertion failed: (type_tag == GI_TYPE_TAG_INTERFACE)

I'll look into it.

Thanks,

Mike Gran