On Sat, Dec 04, 2004 at 12:11:48PM -0600, Rick Taube wrote:

...

Now, i can load and start the examples but unfortunately the first callback seems to tickle openmcl's kernel in unwanted places. I guess i should first test my gtk2 bindings without the lambdagtk suggar ... :-/

sorry i dont know anything about the callback support on linux-ppc, ive only used the darwin version and that works quite well

Hello Rick,

here's what i've done so far (i'll send a cc tothe openmcl-devel list, i fear i need some help from there).

- created a (hopefully correct) populate.sh that uses 'pkg-config' to find all neccessary CPP flags.

- generated the interface database as outlined on the website

- rewrote 'ccl:library/openmcl-gtk-support.lisp' into 'ccl:library/openmcl-gtk2-support.lisp' (BTW, is the installation of the gtk-task with def-load-pointers really neccessary? Is there no better way to run the gtk-main loop in a dedicated thread?).

- wrote a quick test case as follows:

;;; ---- File ffi-test-gtk2.lisp ---------------------------------------------------------

(eval-when (:compile-toplevel :execute) (require "openmcl-gtk2-support"))

(defcallback button-clicked (:address button :address cmd :void) (declare (ignore button cmd)) (format t "Hello stranger ~%"))

(defcallback action-quit (:address widget :address data :void) (declare (ignore widget)) (format t "Oi veh ...~%") (#_gtk_main_quit))

(defun gtk2-test ()

(let ((window (#_gtk_window_new #$GTK_WINDOW_TOPLEVEL)) (button (#_gtk_button_new)))

(with-cstrs ((destroy-name "destroy") (clicked-name "clicked") (window-title "Mompidomp ...") (button-label "Click me, stranger ...")) (#_gtk_window_set_title window window-title) (#_gtk_button_set_label button button-label) (#_g_signal_connect_data button clicked-name button-clicked button (%null-ptr) 0) (#_g_signal_connect_data window destroy-name action-quit window (%null-ptr) 0))

(#_gtk_container_add window button) (#_gtk_widget_show button) (#_gtk_widget_show window)

(ccl::%install-periodic-task 'gtk2-task #'(lambda () (do* () ((eql (#_gtk_events_pending) 0)) (#_gtk_main_iteration))) 10)))

;;;; -------------- File ends here --------------------------------------------------

NOTE: i installed the periodic task here since i haven't put it into my gtk2-support and i wnated to test whether gtk-main was causing the troubles (same effect with gtk-man and the periodic task, i'm affraid).

Now, as with the lambda-gtk code, everything works fine until the first callback arrives ... here's a kernel backtrace:

Welcome to OpenMCL Version (Beta: Linux) 0.14.2! ? (load "ffi-test-gtk2.lisp")

"Loading libraries ..." " ... Done" ;Compiler warnings : ; Unused lexical variable DATA, in ACTION-QUIT. #P"/usr/local/src/LISP/lambda-gtk-0.1/ffi-linux.lisp" ? (gtk2-test) #<PERIODIC-TASK GTK2-TASK 10 #x353B58A6> ? Unhandled exception 11 at 0x00012c78, context->regs at #x7fffdd50 Read operation to unmapped address 0x7f454c44 In foreign code at address 0x00012c78 ? for help [8158] OpenMCL kernel debugger: b

(#x7fffe210) #x00013688 : (null) + 79496 (#x7fffe240) #x0001381C : (null) + 79900 (#x7fffe480) #x300E4BD4 : (null) + 806243284 (#x7FFFE4B0) #x7FFFE808 : foreign code (unknown) (#x7fffeb00) #x0F8E3AC4 : (null) + 260979396 (#x7fffebc0) #x0F8E29EC : g_signal_emit_valist + 1864 (#x7fffee10) #x0F8E2D38 : g_signal_emit + 108 (#x7fffeea0) #x0F015628 : gtk_button_clicked + 132 (#x7fffeec0) #x0F016804 : (null) + 251750404 (#x7fffeee0) #x0F8E405C : g_cclosure_marshal_VOID__VOID + 176 (#x7fffef00) #x0F8CE930 : (null) + 260892976 (#x7fffef30) #x0F8CE5A4 : g_closure_invoke + 224 (#x7fffef70) #x0F8E3374 : (null) + 260977524 (#x7ffff030) #x0F8E29EC : g_signal_emit_valist + 1864 (#x7ffff280) #x0F8E2D38 : g_signal_emit + 108 (#x7ffff310) #x0F015568 : gtk_button_released + 132 (#x7ffff330) #x0F016618 : (null) + 251749912 (#x7ffff350) #x0F0D62F0 : _gtk_marshal_BOOLEAN__BOXED + 212 (#x7ffff380) #x0F8CE930 : (null) + 260892976 (#x7ffff3b0) #x0F8CE5A4 : g_closure_invoke + 224 (#x7ffff3f0) #x0F8E3470 : (null) + 260977776 (#x7ffff4b0) #x0F8E27B0 : g_signal_emit_valist + 1292 (#x7ffff700) #x0F8E2D38 : g_signal_emit + 108 (#x7ffff790) #x0F1DBEE8 : (null) + 253607656 (#x7ffff7b0) #x0F0D4670 : gtk_propagate_event + 268 (#x7ffff7d0) #x0F0D3118 : gtk_main_do_event + 652 (#x7ffff800) #x0F96965C : (null) + 261527132 (#x7ffff820) #x0F9DAC98 : (null) + 261991576 (#x7ffff870) #x0F9DC1DC : g_main_context_dispatch + 232 (#x7ffff890) #x0F9DC5AC : (null) + 261997996 (#x7ffff8d0) #x0F9DC8B0 : g_main_context_iteration + 132 (#x7ffff8f0) #x0F0D2AE0 : gtk_main_iteration + 60 (#x7ffff910) #x00007BE0 : (null) + 31712 (#x7FFFF918) #x353BF980 : #<Anonymous Function #x353bf9be> + 52 (#x7FFFF928) #x311143D0 : #<Function HOUSEKEEPING #x3512b42e> + 452 (#x7FFFF938) #x31114358 : #<Function HOUSEKEEPING #x3512b42e> + 332 (#x7FFFF948) #x311142C8 : #<Function HOUSEKEEPING #x3512b42e> + 188 (#x7FFFF958) #x310F7F6C : #<Anonymous Function #x350f7afe> + 312 (#x7FFFF968) #x310F7F84 : #<Anonymous Function #x350f7afe> + 336 (#x7FFFF978) #x310F7F8C : #<Anonymous Function #x350f7afe> + 344 (#x7FFFF988) #x310F7FC0 : #<Anonymous Function #x350f7afe> + 396 (#x7FFFF998) #x00008820 : (subprimitive (null))

... more follows but didn't look to relevant.

Hmm, i don't really know where to go now. Maybe one of the OpenMCL gurus has some idea/pointer?

...

Oh, and as a suggestion: i'd be rather cool to have libglade support in lambda-gtk. Saves a _lot_ of typing ...

there was a post about this on Planet Lisp last month, I think this is the one:

http://journal.boblycat.org/musings/archives/000144.html

Ah, missed that. That does look very promissing :-)

TIA Ralf Mattes