Eduardo Cavazos <[email protected]> wrote:
Here's how I'm defining 'XSetErrorHandler' on the Chicken side:
(define XSetErrorHandler
(foreign-safe-lambda c-pointer XSetErrorHandler
(function int (c-pointer c-pointer))))
And finally, a test error handler:
(define-external (xerrorhandler (c-pointer dpy) (c-pointer ev)) int
(display "Error handler called\n"))
If I trigger an X error, I get a pretty wacky error:
Error: bad argument count - received 134902918 but expected 2: #()
felix winkelmann wrote:
How do you invoke XSetErrorHandler?
In this particular case, like this:
(XSetErrorHandler xerrorhandler)
But ideally, the API should work such that you can do flexible stuff like:
(XSetErrorHandler (lambda (dpy ev) ...))
I.e. pass arbitrary callbacks at runtime.
Ed
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