[Openmcl-devel] Carbon FFI: How can I debug this?
david at david-steuber.com
Fri Dec 24 17:40:44 EST 2004
On Dec 24, 2004, at 3:17 PM, David Steuber wrote:
> Can anyone see anything obviously wrong with this code?
> ;; Install event handler
> (#_InstallEventHandler (#_GetWindowEventTarget *main-window*)
> 1 mainspec
GetWindowEventTarget was returning a NULL pointer causing
InstallEventHandler to return paramErr.
(#_GetWindowEventTarget (ccl::%get-ptr *main-window*) turns out to be
the correct incantation. I don't know if I need to be using %GET-PTR
for the user data parameter or not.
My app now gets killed when the callback is called, or so it appears.
I'm really not sure how to debug that. I figured out the last problem
by using SETF, isolating bits of code, and using slime-connect to see
what the return values were. Tedious. That option doesn't seem to be
available for the callback dying.
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