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Re: getting to know the FFI ...
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From: |
Matt Wette |
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Subject: |
Re: getting to know the FFI ... |
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Date: |
Sun, 22 Nov 2020 06:55:17 -0800 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 |
On 11/19/20 7:02 PM, Tim Meehan wrote:
I figured that I would try and do something simple-ish to see how well I
understood the FFI. I found this GTK tutorial, written in Chez Scheme:
https://github.com/jhidding/lyonesse/blob/master/gtk-tutorial/window.scm
I just tried to replace the Chez FFI calls with Guile FFI calls.
I'm not sure how to tell GTK about a callback that is written in Guile.
I'm not sure how to pass a string to GTK ...
Cheers,
;; HELP: This obviously won't work.
;; How would I give GTK a Guile callback?
(define (callback p)
(let ([code (foreign-callable p (iptr iptr) void)])
(lock-object code)
(foreign-callable-entry-point code)))
try reading the manual section on procedure->pointer