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Re: listening for input with CLX
does someone know how to perform the equivalent of a listen on the
file descriptor associated with the input stream for a given display?
i noticed that the r4 CLX code has support for this, but i can find neither
neither the equivalent R3 CLX functions, nor the base functions which the R
the salient function appears to be:
(defun fd-char-avail-p (fd)
(multiple-value-bind (available-p errcode)
(comp::.primcall-sargs 'sys::filesys excl::fs-char-avail fd)
i am using allegro cl: "3.1.beta.28 [DEC 3100] (8/3;8/7/89)"
I didn't realize when I answered your question yesterday that you have code
built on R3 CLX and so cannot switch to R4 CLX.
Here is an implementation for the R3 CLX you are using. You will also need
to have the scheduler running. (mp:start-scheduler) will do this.
(defun buffer-listen (display)
(mp:process-wait :no-input #'xlib::listen-fd
-- John Irwin