Mercurial > hg > xemacs-beta
view lwlib/xlwmenu.h @ 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 | ade4c7e2c6cb |
| children |
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/* Implements a lightweight menubar widget. Copyright (C) 1992, 1993, 1994 Lucid, Inc. Copyright (C) 1995 Tinker Systems and INS Engineering Corp. This file is part of the Lucid Widget Library. The Lucid Widget Library 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. The Lucid Widget Library 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 the Lucid Widget Library. If not, see <http://www.gnu.org/licenses/>. */ #ifndef INCLUDED_xlwmenu_h_ #define INCLUDED_xlwmenu_h_ /*********************************************************************** * * XlwMenu Widget * ***********************************************************************/ #include "lwlib.h" /* Resource names used by the XlwMenu widget */ #define XtNbuttonForeground "buttonForeground" #define XtCButtonForeground "ButtonForeground" #define XtNhighlightForeground "highlightForeground" #define XtCHighlightForeground "HighlightForeground" #define XtNtitleForeground "titleForeground" #define XtCTitleForeground "TitleForeground" #define XtNmargin "margin" #define XtNhorizontalSpacing "horizontalSpacing" #define XtNverticalSpacing "verticalSpacing" #define XtNarrowSpacing "arrowSpacing" #define XtNmenu "menu" #define XtCMenu "Menu" #define XtNopen "open" #define XtNselect "select" #define XtNmenuBorderWidth "menuBorderWidth" #define XtNhorizontal "horizontal" #define XtCHorizontal "Horizontal" #ifndef XtNcursor #define XtNcursor "cursor" #endif #ifndef XtCCursor #define XtCCursor "Cursor" #endif #ifndef XtNuseBackingStore #define XtNuseBackingStore "useBackingStore" #endif #ifndef XtCUseBackingStore #define XtCUseBackingStore "UseBackingStore" #endif #define XtNbounceDown "bounceDown" #define XtCBounceDown "BounceDown" #define XtNresourceLabels "resourceLabels" #define XtCResourceLabels "ResourceLabels" /* Motif-compatible resource names */ #ifndef XmNshadowThickness # define XmNshadowThickness "shadowThickness" # define XmCShadowThickness "ShadowThickness" # define XmNtopShadowColor "topShadowColor" # define XmCTopShadowColor "TopShadowColor" # define XmNbottomShadowColor "bottomShadowColor" # define XmCBottomShadowColor "BottomShadowColor" # define XmNtopShadowPixmap "topShadowPixmap" # define XmCTopShadowPixmap "TopShadowPixmap" # define XmNbottomShadowPixmap "bottomShadowPixmap" # define XmCBottomShadowPixmap "BottomShadowPixmap" # define XmUNSPECIFIED_PIXMAP 2 # define XmRHorizontalDimension "HorizontalDimension" # define XmNspacing "spacing" # define XmCSpacing "Spacing" # define XmNindicatorSize "indicatorSize" # define XmCIndicatorSize "IndicatorSize" # define XmNselectColor "selectColor" # define XmCSelectColor "SelectColor" # define XmNmarginHeight "marginHeight" # define XmCMarginHeight "MarginHeight" # define XmNmarginWidth "marginWidth" # define XmCMarginWidth "MarginWidth" # define XmRVerticalDimension "VerticalDimension" #endif typedef struct _XlwMenuRec *XlwMenuWidget; typedef struct _XlwMenuClassRec *XlwMenuWidgetClass; extern WidgetClass xlwMenuWidgetClass; void xlw_pop_up_menu (XlwMenuWidget mw, XButtonPressedEvent* event); /* menu accelerator */ void xlw_set_menu (Widget w, widget_value *val); void xlw_push_menu (widget_value *val); int xlw_pop_menu (void); void xlw_set_item (widget_value *val); void xlw_map_menu (Time t); void xlw_display_menu (Time t); void xlw_kill_menus (widget_value *val); widget_value *xlw_get_entries (int allp); int xlw_menu_level (void); #endif /* INCLUDED_xlwmenu_h_ */