Mercurial > hg > xemacs-beta
view etc/tests/external-widget/test-ew-motif.c @ 5566:4654c01af32b
Improve the implementation, documentation of #'labels, #'flet.
lisp/ChangeLog addition:
2011-09-07 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el:
* bytecomp.el (for-effect): Move this earlier in the file, it's
referenced in byte-compile-initial-macro-environment.
* bytecomp.el (byte-compile-initial-macro-environment):
In the byte-compile-macro-environment definition for #'labels, put
off the compiling the lambda bodies until the point where the rest
of the form is being compiled, allowing the lambda bodies to
access appropriate values for byte-compile-bound-variables, and
reducing excessive warning about free variables.
Add a byte-compile-macro-environment definition for #'flet. This
modifies byte-compile-function-environment appropriately, and
warns about bindings of functions that have macro definitions in
the current environment, about functions that have byte codes, and
about functions that have byte-compile methods (which may not do
what the user wants at runtime).
* bytecomp.el (byte-compile-funcall):
If FUNCTION is constant, call #'byte-compile-callargs-warn if
that's appropriate, giving warnings about problems with calling
functions bound with #'labels.
* cl-macs.el:
* cl-macs.el (flet):
Mention the main difference from Common Lisp, that the bindings
are dynamic, not lexical. Counsel the use of #'labels, not #'flet,
for this and other reasons. Explain the limited single use case for
#'flet. Cross-reference to bytecomp.el in a comment.
* cl-macs.el (labels):
Go into detail on which functions may be called from
where. Explain how to access the function definition of a label
within FORM. Add a comment cross-referencing to bytecomp.el.
man/ChangeLog addition:
2011-09-07 Aidan Kehoe <kehoea@parhasard.net>
* cl.texi (Function Bindings):
Move #'labels first, describe it in more detail, explaining that
it is to be preferred over #'flet, and explaining why.
Explain that dynamic bindings with #'flet will also not work when
functions are accessed through their bytecodes.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Wed, 07 Sep 2011 16:26:45 +0100 |
parents | 6a8c6c6f6c8e |
children |
line wrap: on
line source
/* Test external widget code in Motif. Copyright (C) 1993 Ben Wing. This file is part of XEmacs. XEmacs is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ #include <Xm/Xm.h> #include <Xm/RowColumn.h> #include <Xm/Scale.h> #include <Xm/PushB.h> #include <Xm/Label.h> #include <Xm/Text.h> #include <Xm/PanedW.h> #include "ExternalClient.h" #ifdef TOOLTALK #include <desktop/tt_c.h> char *HxProcID; #endif XtAppContext xt_app_con; void ScaleValueChangedCB(Widget scale, XtPointer app_data, XtPointer widget_data) { XmScaleCallbackStruct *xms = (XmScaleCallbackStruct *) widget_data; Widget label = (Widget) app_data; char labelarr[10]; XmString labelstr; #if 0 sprintf(labelarr, "%d", xms->value); labelstr = XmStringCreateLocalized(labelarr); XtVaSetValues(label, XmNlabelString, labelstr, NULL); XmStringFree(labelstr); #endif } #ifdef TOOLTALK static void handle_tt_input(XtPointer client_data, int *source, XtInputId *id) { Tt_message m = tt_message_receive(); if (m && !(tt_ptr_error(m))) { tt_message_destroy(m); } } Tt_status HxInitializeToolTalk() { static Boolean initialized = FALSE; if (!initialized) { int fd; Tt_status status; HxProcID = tt_open(); fd = tt_fd(); if (TT_OK != (status = tt_session_join( tt_default_session() ))) return status; (void)XtAppAddInput(xt_app_con, fd, (void *)XtInputReadMask, handle_tt_input, NULL); initialized = TRUE; } return TT_OK; } #endif main(int argc, char **argv) { Widget shell, rowcolumn, scale, pushbutton, label1, label2, text; Widget paned, text2; int n, i; Widget widlist[100]; Widget emacscli[100]; Arg args[100]; int no_ews = 1; char buf[100]; if (argc > 1) no_ews = atoi (argv[1]); shell = XtAppInitialize(&xt_app_con, "Testmotif", NULL, 0, &argc, argv, NULL, NULL, 0); #ifdef TOOLTALK HxInitializeToolTalk(); #endif rowcolumn = XmCreateRowColumn(shell, "rowcolumn", NULL, 0); XtManageChild(rowcolumn); n = 0; XtSetArg(args[n], XmNtraversalOn, TRUE); n++; #if 0 label1 = XmCreateLabel(rowcolumn, "label1", args, n); #endif label1 = XtVaCreateWidget("label1", xmLabelWidgetClass, rowcolumn, XmNwidth, 50, XmNheight, 30, XmNtraversalOn, TRUE, NULL); label2 = XmCreateLabel(rowcolumn, "label2", NULL, 0); scale = XmCreateScale(rowcolumn, "scale", NULL, 0); XtAddCallback(scale, XmNvalueChangedCallback, ScaleValueChangedCB, label1); paned = XmCreatePanedWindow(rowcolumn, "paned", NULL, 0); n = 0; widlist[n++] = label1; widlist[n++] = label2; widlist[n++] = scale; widlist[n++] = paned; XtManageChildren(widlist, n); pushbutton = XmCreatePushButton(paned, "pushbutton", NULL, 0); text = XmCreateText(paned, "text", NULL, 0); for (i=0; i<no_ews; i++) { sprintf (buf, "extcli%d", i); emacscli[i] = XtVaCreateWidget(buf, externalClientWidgetClass, paned, XmNwidth, 500, XmNheight, 200, XmNtraversalOn, TRUE, #ifdef TOOLTALK XtNuseToolTalk, TRUE, #endif NULL); } text2 = XmCreateText(paned, "text2", NULL, 0); n = 0; widlist[n++] = pushbutton; widlist[n++] = text; for (i=0; i<no_ews; i++) widlist[n++] = emacscli[i]; widlist[n++] = text2; XtManageChildren(widlist, n); XtRealizeWidget(shell); { XmString lab; char labarr[1000]; char tmpbuf[50]; strcpy (labarr, "window:"); for (i=0; i<no_ews; i++) { sprintf (tmpbuf, " %d", XtWindow(emacscli[i])); strcat (labarr, tmpbuf); } lab = XmStringCreateLocalized(labarr); XtVaSetValues(label2, XmNlabelString, lab, NULL); XmStringFree(lab); } XtAppMainLoop(xt_app_con); }