Re: ltk-user Digest, Vol 20, Issue 1 - ltk-user - mailman3.common-lisp.net

28 Oct 2020


      Hello,
I don't have a problem running this function. We didn't see all your
code, what did you type before and how did you call the function?
I don't have a problem when I am in the ltk-user package:
(in-package :ltk-user)
(defun hello()
  (with-ltk ()
    (let* ((tx (make-instance 'text )))
      (pack tx))))
(hello)
=> opens a text widget
However, to stay in the cl-user package, I prefixed the ltk functions:
(defun hello()
  (ltk:with-ltk ()
    (let* ((tx (make-instance 'ltk:text )))
      (ltk:pack tx))))
(hello)
=> ok
So you probably want to "use" ltk, with (use-package :ltk) or in your
package definition.
Looking at the first steps tutorial
(http://www.peter-herth.de/ltk/ltkdoc/node5.html), there is no mentions
of packages, but here there is: https://lispcookbook.github.io/cl-cookbook/gui.html#tk
Best,
Vincent
On 28/10/2020 13:00, ltk-user-request@common-lisp.net wrote:
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Today's Topics:

error on first steps with LTK (Ulrich Vollert)


Message: 1
Date: Mon, 26 Oct 2020 19:11:02 +0100
From: Ulrich Vollert ulrivo@gmx.de
To: ltk-user@common-lisp.net
Subject: error on first steps with LTK
Message-ID: 1722B608-9760-415B-B1D5-87B9B0F14A4C@gmx.de
Content-Type: text/plain;	charset=us-ascii
Hello,
I am trying to make a text widget:
(defun hello()
  (with-ltk ()
    (let* ((tx (make-instance 'text )))
      (pack tx))))
But I get an error (here the messages by slime):
too many colons in "07"
Stream: #<TWO-WAY-STREAM
            :INPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 16" {1005CE4193}>
            :OUTPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 9" {1005CE45B3}>>
   [Condition of type SB-INT:SIMPLE-READER-ERROR]
Restarts:
 0: [SEND-TO-DEBUGGER] Send condition to the debugger
 1: [ABORT] Abort handling Tk event
 2: [EXIT] Exit Ltk main loop
 3: [RETRY] Retry SLIME REPL evaluation request.
 4: [*ABORT] Return to SLIME's top level.
 5: [ABORT] abort thread (#<THREAD "repl-thread" RUNNING {10026087A3}>)
Backtrace:
  0: (SB-IMPL::READ-TOKEN #<TWO-WAY-STREAM :INPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 16" {1005CE4193}> :OUTPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 9" {1005CE45B3}>> #\1)
  1: (SB-IMPL::READ-MAYBE-NOTHING #<TWO-WAY-STREAM :INPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 16" {1005CE4193}> :OUTPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 9" {1005CE45B3}>> #\1)
  2: (SB-IMPL::%READ-PRESERVING-WHITESPACE #<TWO-WAY-STREAM :INPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 16" {1005CE4193}> :OUTPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 9" {1005CE45B3}>> NIL NIL T)
  3: (SB-IMPL::%READ-PRESERVING-WHITESPACE #<TWO-WAY-STREAM :INPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 16" {1005CE4193}> :OUTPUT-STREAM #<SB-SYS:FD-STREAM for "descriptor 9" {1005CE45B3}>> NIL NIL NI..
  4: (READ-EVENT :BLOCKING T :NO-EVENT-VALUE (NIL))
  5: ((LABELS LTK::PROC-EVENT :IN LTK::MAIN-ITERATION))
  6: (MAINLOOP :SERVE-EVENT NIL)
  7: ((LAMBDA (CONDITION) :IN LTK::MAKE-CONDITION-HANDLER-FUNCTION) #<SIMPLE-ERROR "When reading from tcl, expected a list but instead got ~S" {1005CFB063}>)
  8: (SB-KERNEL::%SIGNAL #<SIMPLE-ERROR "When reading from tcl, expected a list but instead got ~S" {1005CFB063}>)
  9: (ERROR "When reading from tcl, expected a list but instead got ~S" |2020-10-26|)
 10: (LTK::VERIFY-EVENT |2020-10-26|)
 11: ((LABELS LTK::PROC-EVENT :IN LTK::MAIN-ITERATION))
 12: (LTK::MAIN-ITERATION :BLOCKING T :REENTRANT? NIL)
 13: ((LAMBDA (LTK::THUNK) :IN LTK::MAKE-CALL-WITH-CONDITION-HANDLERS-FUNCTION) #<FUNCTION (LAMBDA NIL :IN MAINLOOP) {2279624B}>)
 14: (MAINLOOP :SERVE-EVENT NIL)
 15: (CALL-WITH-LTK #<FUNCTION (LAMBDA NIL :IN HELLO) {227BF74B}>)
 16: (SB-INT:SIMPLE-EVAL-IN-LEXENV (HELLO) #<NULL-LEXENV>)
 17: (EVAL (HELLO))
 18: (SWANK::EVAL-REGION "(hello) ..)
 19: ((LAMBDA NIL :IN SWANK-REPL::REPL-EVAL))
 20: (SWANK-REPL::TRACK-PACKAGE #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::REPL-EVAL) {1005CE26FB}>)
 21: (SWANK::CALL-WITH-RETRY-RESTART "Retry SLIME REPL evaluation request." #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::REPL-EVAL) {1005CE269B}>)
 22: (SWANK::CALL-WITH-BUFFER-SYNTAX NIL #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::REPL-EVAL) {1005CE267B}>)
 23: (SWANK-REPL::REPL-EVAL "(hello) ..)
 24: (SB-INT:SIMPLE-EVAL-IN-LEXENV (SWANK-REPL:LISTENER-EVAL "(hello) ..)
 25: (EVAL (SWANK-REPL:LISTENER-EVAL "(hello) ..)
 26: (SWANK:EVAL-FOR-EMACS (SWANK-REPL:LISTENER-EVAL "(hello) ..)
 27: (SWANK::PROCESS-REQUESTS NIL)
 28: ((LAMBDA NIL :IN SWANK::HANDLE-REQUESTS))
 29: ((LAMBDA NIL :IN SWANK::HANDLE-REQUESTS))
 30: (SWANK/SBCL::CALL-WITH-BREAK-HOOK #<FUNCTION SWANK:SWANK-DEBUGGER-HOOK> #<CLOSURE (LAMBDA NIL :IN SWANK::HANDLE-REQUESTS) {10026180FB}>)
 31: ((FLET SWANK/BACKEND:CALL-WITH-DEBUGGER-HOOK :IN "/Users/ulrivo/Dropbox/emacs/.emacs.d/elpa/slime-20200810.224/swank/sbcl.lisp") #<FUNCTION SWANK:SWANK-DEBUGGER-HOOK> #<CLOSURE (LAMBDA NIL :IN SWANK::..
 32: (SWANK::CALL-WITH-BINDINGS ((*STANDARD-INPUT* . #<SWANK/GRAY::SLIME-INPUT-STREAM {10025F0BF3}>)) #<CLOSURE (LAMBDA NIL :IN SWANK::HANDLE-REQUESTS) {100261811B}>)
 33: (SWANK::HANDLE-REQUESTS #<SWANK::MULTITHREADED-CONNECTION {10022D30F3}> NIL)
 34: ((FLET SB-UNIX::BODY :IN SB-THREAD::NEW-LISP-THREAD-TRAMPOLINE))
 35: ((FLET "WITHOUT-INTERRUPTS-BODY-4" :IN SB-THREAD::NEW-LISP-THREAD-TRAMPOLINE))
 36: ((FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD::NEW-LISP-THREAD-TRAMPOLINE))
 37: ((FLET "WITHOUT-INTERRUPTS-BODY-1" :IN SB-THREAD::CALL-WITH-MUTEX))
 38: (SB-THREAD::CALL-WITH-MUTEX #<CLOSURE (FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD::NEW-LISP-THREAD-TRAMPOLINE) {115E7E7B}> #<SB-THREAD:MUTEX "thread result lock" owner: #<SB-THREAD:THREAD "repl-th..
 39: (SB-THREAD::NEW-LISP-THREAD-TRAMPOLINE #<SB-THREAD:THREAD "repl-thread" RUNNING {10026087A3}> NIL #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::SPAWN-REPL-THREAD) {100260874B}> NIL)
 40: ("foreign function: call_into_lisp")
 41: ("foreign function: new_thread_trampoline")

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