view src/gui_xmebw.c @ 33581:403d57b06231 v9.0.2035

patch 9.0.2035: [security] use-after-free with wildmenu Commit: https://github.com/vim/vim/commit/8f4fb007e4d472b09ff6bed9ffa485e0c3093699 Author: Yee Cheng Chin <ychin.git@gmail.com> Date: Tue Oct 17 10:06:56 2023 +0200 patch 9.0.2035: [security] use-after-free with wildmenu Problem: [security] use-after-free with wildmenu Solution: properly clean up the wildmenu when exiting Fix wildchar/wildmenu/pum memory corruption with special wildchar's Currently, using `wildchar=<Esc>` or `wildchar=<C-\>` can lead to a memory corruption if using wildmenu+pum, or wrong states if only using wildmenu. This is due to the code only using one single place inside the cmdline process loop to perform wild menu clean up (by checking `end_wildmenu`) but there are other odd situations where the loop could have exited and we need a post-loop clean up just to be sure. If the clean up was not done you would have a stale popup menu referring to invalid memory, or if not using popup menu, incorrect status line (if `laststatus=0`). For example, if you hit `<Esc>` two times when it's wildchar, there's a hard-coded behavior to exit command-line as a failsafe for user, and if you hit `<C-\><C-\><C-N>` it will also exit command-line, but the clean up code would not have hit because of specialized `<C-\>` handling. Fix Ctrl-E / Ctrl-Y to not cancel/accept wildmenu if they are also used for 'wildchar'/'wildcharm'. Currently they don't behave properly, and also have potentially memory unsafe behavior as the logic is currently not accounting for this situation and try to do both. (Previous patch that addressed this: #11677) Also, correctly document Escape key behavior (double-hit it to escape) in wildchar docs as it's previously undocumented. In addition, block known invalid chars to be set in `wildchar` option, such as Ctrl-C and `<CR>`. This is just to make it clear to the user they shouldn't be set, and is not required for this bug fix. closes: #13361 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
author Christian Brabandt <cb@256bit.org>
date Tue, 17 Oct 2023 10:15:08 +0200
parents 50555279168b
children
line wrap: on
line source

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */
/*
 *
 * (C) 2002,2005 by Marcin Dalecki <martin@dalecki.de>
 *
 * MARCIN DALECKI ASSUMES NO RESPONSIBILITY FOR THE USE OR INABILITY TO USE ANY
 * OF THIS SOFTWARE . THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
 * KIND, AND MARCIN DALECKI EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES,
 * INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE.
 */

/*
 * Enhanced Motif PushButton widget with move over behavior.
 */

#include "vim.h"

#ifdef FEAT_TOOLBAR

#include <Xm/XmP.h>
#include <Xm/DrawP.h>
#if defined(HAVE_XM_TRAITP_H) && defined(HAVE_XM_MANAGER_H) \
	&& defined(HAVE_XM_UNHIGHLIGHTT_H) && defined(HAVE_XM_XPMP_H)
# include <Xm/TraitP.h>
# include <Xm/Manager.h>
# include <Xm/UnhighlightT.h>
# include <Xm/XpmP.h>
# define UNHIGHLIGHTT
#else
# ifdef HAVE_X11_XPM_H
#  ifdef VMS
#   include <xpm.h>
#  else
#   include <X11/xpm.h>
#  endif
# endif
#endif
#include <Xm/ManagerP.h>
#include <Xm/Display.h>
#include <Xm/DisplayP.h>

#include <X11/Shell.h>
#include <X11/ShellP.h>

#include "gui_xmebwp.h"

// Provide some missing wrappers, which are missed from the LessTif
// implementation.  Also missing in Motif 1.2 and earlier.
//
// We neither use XmeGetPixmapData or _XmGetPixmapData, since with LessTif the
// pixmap will not appear in its caches properly. We cache the interesting
// values in XmEnhancedButtonPart instead ourself.
#if defined(LESSTIF_VERSION) || (XmVersion <= 1002)
# ifndef Lab_IsMenupane
#  define Lab_IsMenupane(w) (Lab_MenuType(w) == (int)XmMENU_POPUP || \
		    Lab_MenuType(w) == (int)XmMENU_PULLDOWN)
# endif
# define XmeClearBorder	    _XmClearBorder
# define XmeDrawShadows	    _XmDrawShadows
# define XmeDrawHighlight(a, b, c, d, e, f, g, h) \
    _XmDrawHighlight(a, b, c, d, e, f, g, h, LineSolid)
#endif

// Older VMS systems do not have xos_r.h and cannot haldle XtProcessLocking
#if defined(VMS)
# if defined(HAVE_XOS_R_H)
#  define XTPROCESS_LOCK XtProcessLock()
#  define XTPROCESS_UNLOCK XtProcessUnlock()
# else
#  define XTPROCESS_LOCK
#  define XTPROCESS_UNLOCK
# endif
#else
# define XTPROCESS_LOCK XtProcessLock()
# define XTPROCESS_UNLOCK XtProcessUnlock()
#endif

/*
 * Motif internals we have to cheat around with.
 */

// Hopefully this will never change...
#ifndef XmFOCUS_IGNORE
# define XmFOCUS_IGNORE       1<<1
#endif

extern Boolean _XmGetInDragMode(Widget widget);
extern void _XmPrimitiveEnter(Widget wid,
			      XEvent * event,
			      String * params, Cardinal * num_params);
extern void _XmPrimitiveLeave(Widget wid,
			      XEvent * event,
			      String * params, Cardinal * num_params);
extern void _XmSetFocusFlag(Widget w, unsigned int mask, Boolean value);
extern void _XmCalcLabelDimensions(Widget wid);

/*
 * Declaration of class methods.
 */
static void Destroy(Widget w);
static void Initialize(Widget rq, Widget eb, ArgList args, Cardinal *n);
static Boolean SetValues(Widget current, Widget request, Widget new, ArgList args, Cardinal *n);
static void Redisplay(Widget, XEvent *, Region);

/*
 * Declaration of action methods.
 */
static void Enter(Widget, XEvent *, String *, Cardinal *);
static void Leave(Widget, XEvent *, String *, Cardinal *);
static void BorderHighlight(Widget);
static void BorderUnhighlight(Widget);

/*
 * 4 x 4 stipple for desensitized widgets
 */
#define stipple_width  4
#define stipple_height 4
static char stipple_bits[] = { 0x0a, 0x05, 0x0a, 0x05 };
#define STIPPLE_BITMAP	xmEnhancedButtonClassRec.enhancedbutton_class.stipple_bitmap

/*
 * Override actions.
 */
static XtActionsRec actionsList[] =
{
    {"Enter", Enter},
    {"Leave", Leave},
};

static XtResource resources[] =
{
    {
	XmNpixmapData, XmCPixmap, XmRString, sizeof(String),
	XtOffsetOf(XmEnhancedButtonRec, enhancedbutton.pixmap_data),
	XmRImmediate, (XtPointer) NULL
    }, {
	XmNpixmapFile, XmCPixmap, XmRString, sizeof(String),
	XtOffsetOf(XmEnhancedButtonRec, enhancedbutton.pixmap_file),
	XmRImmediate, (XtPointer) NULL
    }, {
	XmNspacing, XmCSpacing, XmRHorizontalDimension, sizeof(Dimension),
	XtOffsetOf(XmEnhancedButtonRec, enhancedbutton.spacing),
	XmRImmediate, (XtPointer) 2
    },
    {
	XmNlabelLocation, XmCLocation, XmRInt, sizeof(int),
	XtOffsetOf(XmEnhancedButtonRec, enhancedbutton.label_location),
	XtRImmediate, (XtPointer) XmRIGHT
    }
};

// This is needed to work around a bug in Lesstif 2, leaving the extension
// NULL somehow results in getting it set to an invalid pointer.
XmPrimitiveClassExtRec xmEnhancedButtonPrimClassExtRec =
{
    /* next_extension      */ NULL,
    /* record_type	   */ NULLQUARK,
    /* version		   */ XmPrimitiveClassExtVersion,
    /* record_size	   */ sizeof(XmPrimitiveClassExtRec),
    /* widget_baseline	   */ XmInheritBaselineProc,
    /* widget_display_rect */ XmInheritDisplayRectProc,
    /* widget_margins      */ NULL
};

XmEnhancedButtonClassRec xmEnhancedButtonClassRec =
{
    {
	// core_class fields
	/* superclass		 */ (WidgetClass) & xmPushButtonClassRec,
	/* class_name		 */ "XmEnhancedButton",
	/* widget_size		 */ sizeof(XmEnhancedButtonRec),
	/* class_initialize	 */ NULL,
	/* class_part_initialize */ NULL,
	/* class_inited		 */ False,
	/* initialize		 */ Initialize,
	/* initialize_hook	 */ NULL,
	/* realize		 */ XtInheritRealize,
	/* actions		 */ actionsList,
	/* num_actions		 */ XtNumber(actionsList),
	/* resources		 */ resources,
	/* num_resources	 */ XtNumber(resources),
	/* xrm_class		 */ NULLQUARK,
	/* compress_motion	 */ True,
	/* compress_exposure	 */ XtExposeCompressMaximal,
	/* compress_enterleave	 */ True,
	/* visible_interest	 */ False,
	/* destroy		 */ Destroy,
	/* resize		 */ XtInheritResize,
	/* expose		 */ Redisplay,
	/* set_values		 */ SetValues,
	/* set_values_hook	 */ NULL,
	/* set_values_almost	 */ XtInheritSetValuesAlmost,
	/* get_values_hook	 */ NULL,
	/* accept_focus		 */ XtInheritAcceptFocus,
	/* version		 */ XtVersion,
	/* callback_private	 */ NULL,
	/* tm_table		 */ NULL,
	/* query_geometry	 */ NULL,
	/* display_accelerator	 */ XtInheritDisplayAccelerator,
	/* extension		 */ NULL
    },

    // primitive_class fields
    {
	/* border highlight	 */ BorderHighlight,
	/* border_unhighlight	 */ BorderUnhighlight,
	/* translations		 */ XtInheritTranslations,
	/* arm and activate	 */ XmInheritArmAndActivate,
	/* synthetic resources	 */ NULL,
	/* number of syn res	 */ 0,
	/* extension		 */ (XtPointer)&xmEnhancedButtonPrimClassExtRec,
    },

    // label_class fields
    {
	/* setOverrideCallback	 */ XmInheritSetOverrideCallback,
	/* menuProcs		 */ XmInheritMenuProc,
	/* translations		 */ XtInheritTranslations,
	/* extension		 */ NULL,
    },

    // pushbutton_class record
    {
	/* extension		 */ (XtPointer) NULL,
    },

    // enhancedbutton_class fields
    {
	/* stipple_bitmap	 */ None
    }
};


WidgetClass xmEnhancedButtonWidgetClass =
				       (WidgetClass)&xmEnhancedButtonClassRec;


/*
 * Create a slightly fainter pixmap to be shown on button entry.
 */
    static unsigned short
bump_color(unsigned short value)
{
    int tmp = 2 * (((int) value - 65535) / 3) + 65535;

    return tmp;
}

    static int
alloc_color(Display	*display,
	Colormap	colormap,
	char		*colorname,
	XColor		*xcolor,
	void		*closure UNUSED)
{
    int status;

    if (colorname)
	if (!XParseColor(display, colormap, colorname, xcolor))
	    return -1;

    xcolor->red = bump_color(xcolor->red);
    xcolor->green = bump_color(xcolor->green);
    xcolor->blue = bump_color(xcolor->blue);

    status = XAllocColor(display, colormap, xcolor);
    return status != 0 ? 1 : 0;
}

// XPM
static char * blank_xpm[] =
{
// width height ncolors cpp [x_hot y_hot]
"12 12 4 1 0 0",
// colors
"#	s iconColor1	m black	c #000000",
".	s none	m none	c none",
"X	s topShadowColor	m none	c #DCDEE5",
"o	s bottomShadowColor	m black	c #5D6069",
// pixels
"##########..",
"#XXXXXXXX#..",
"#X.......#o.",
"#X.......#o.",
"#X.......#o.",
"#X.......#o.",
"#X.......#o.",
"#X.......#o.",
"#X.......#o.",
"##########o.",
"..ooooooooo.",
"............"};

/*
 * Set the pixmap.
 */
    static void
set_pixmap(XmEnhancedButtonWidget eb)
{
    // Configure defines XPMATTRIBUTES_TYPE as XpmAttributes or as
    // XpmAttributes_21, depending on what is in Xm/XpmP.h.
    XPMATTRIBUTES_TYPE   attr;
    Pixmap	    sen_pix;
    Window	    root;
    static XpmColorSymbol color[8] = {
	{"none", "none", 0},
	{"None", "none", 0},
	{"background", NULL, 0},
	{"foreground", NULL, 0},
	{"bottomShadowColor", NULL, 0},
	{"topShadowColor", NULL, 0},
	{"highlightColor", NULL, 0},
	{"armColor", NULL, 0}
    };
    int		    scr;
    Display	    *dpy = XtDisplay(eb);
    int		    x;
    int		    y;
    unsigned int    height, width, border, depth;
    int		    status = 0;
    Pixmap	    mask;
    Pixmap	    pix = None;
    Pixmap	    arm_pix = None;
    Pixmap	    ins_pix = None;
    Pixmap	    high_pix = None;
    char	    **data = (char **) eb->enhancedbutton.pixmap_data;
    char	    *fname = (char *) eb->enhancedbutton.pixmap_file;
    int		    shift;
    GC		    gc;

    // Make sure there is a default value for the pixmap.
    if (!data)
	return;

    gc = XtGetGC((Widget)eb, (XtGCMask)0, NULL);

    scr = DefaultScreen(dpy);
    root = RootWindow(dpy, scr);

    eb->label.pixmap = None;

    eb->enhancedbutton.pixmap_depth = 0;
    eb->enhancedbutton.pixmap_width = 0;
    eb->enhancedbutton.pixmap_height = 0;
    eb->enhancedbutton.normal_pixmap = None;
    eb->enhancedbutton.armed_pixmap = None;
    eb->enhancedbutton.highlight_pixmap = None;
    eb->enhancedbutton.insensitive_pixmap = None;

    // We use dynamic colors, get them now.
    motif_get_toolbar_colors(
	    &eb->core.background_pixel,
	    &eb->primitive.foreground,
	    &eb->primitive.bottom_shadow_color,
	    &eb->primitive.top_shadow_color,
	    &eb->primitive.highlight_color);

    // Setup color substitution table.
    color[0].pixel = eb->core.background_pixel;
    color[1].pixel = eb->core.background_pixel;
    color[2].pixel = eb->core.background_pixel;
    color[3].pixel = eb->primitive.foreground;
    color[4].pixel = eb->core.background_pixel;
    color[5].pixel = eb->primitive.top_shadow_color;
    color[6].pixel = eb->primitive.highlight_color;
    color[7].pixel = eb->pushbutton.arm_color;

    // Create the "sensitive" pixmap.
    attr.valuemask = XpmColorSymbols | XpmCloseness;
    attr.closeness = 65535;	// accuracy isn't crucial
    attr.colorsymbols = color;
    attr.numsymbols = XtNumber(color);

    if (fname)
	status = XpmReadFileToPixmap(dpy, root, fname, &pix, &mask, &attr);
    if (!fname || status != XpmSuccess)
	status = XpmCreatePixmapFromData(dpy, root, data, &pix, &mask, &attr);

    // If something failed, we will fill in the default pixmap.
    if (status != XpmSuccess)
	status = XpmCreatePixmapFromData(dpy, root, blank_xpm, &pix,
								&mask, &attr);

    XpmFreeAttributes(&attr);

    XGetGeometry(dpy, pix, &root, &x, &y, &width, &height, &border, &depth);

    // TODO: does the shift depend on label_location somehow?
    shift = eb->primitive.shadow_thickness / 2;

    if (shift < 1)
	shift = 1;

    sen_pix = XCreatePixmap(dpy, root, width + shift, height + shift, depth);

    XSetForeground(dpy, gc, eb->core.background_pixel);
    XFillRectangle(dpy, sen_pix, gc, 0, 0, width + shift, height + shift);
    XSetClipMask(dpy, gc, mask);
    XSetClipOrigin(dpy, gc, shift, shift);
    XCopyArea(dpy, pix, sen_pix, gc, 0, 0, width, height, shift, shift);

    // Create the "highlight" pixmap.
    color[4].pixel = eb->primitive.bottom_shadow_color;
#ifdef XpmAllocColor // SGI doesn't have it
    attr.valuemask = XpmColorSymbols | XpmCloseness | XpmAllocColor;
    attr.alloc_color = alloc_color;
#else
    attr.valuemask = XpmColorSymbols | XpmCloseness;
#endif
    attr.closeness = 65535;	// accuracy isn't crucial
    attr.colorsymbols = color;
    attr.numsymbols = XtNumber(color);

    status = XpmCreatePixmapFromData(dpy, root, data, &pix, NULL, &attr);
    XpmFreeAttributes(&attr);

    high_pix = XCreatePixmap(dpy, root, width + shift, height + shift, depth);

#if 1
    XSetForeground(dpy, gc, eb->core.background_pixel);
#else
    XSetForeground(dpy, gc, eb->primitive.top_shadow_color);
#endif
    XSetClipMask(dpy, gc, None);
    XFillRectangle(dpy, high_pix, gc, 0, 0, width + shift, height + shift);
    XSetClipMask(dpy, gc, mask);
    XSetClipOrigin(dpy, gc, 0, 0);
    XCopyArea(dpy, pix, high_pix, gc, 0, 0, width, height, 0, 0);

    arm_pix = XCreatePixmap(dpy, pix, width + shift, height + shift, depth);

    if (eb->pushbutton.fill_on_arm)
	XSetForeground(dpy, gc, eb->pushbutton.arm_color);
    else
	XSetForeground(dpy, gc, eb->core.background_pixel);
    XSetClipOrigin(dpy, gc, shift, shift);
    XSetClipMask(dpy, gc, None);
    XFillRectangle(dpy, arm_pix, gc, 0, 0, width + shift, height + shift);
    XSetClipMask(dpy, gc, mask);
    XSetClipOrigin(dpy, gc, 2 * shift, 2 * shift);
    XCopyArea(dpy, pix, arm_pix, gc, 0, 0, width, height, 2 * shift, 2 * shift);

    XFreePixmap(dpy, pix);
    XFreePixmap(dpy, mask);

    // Create the "insensitive" pixmap.
    attr.valuemask = XpmColorSymbols | XpmCloseness | XpmColorKey;
    attr.closeness = 65535;	// accuracy isn't crucial
    attr.colorsymbols = color;
    attr.numsymbols = ARRAY_LENGTH(color);
    attr.color_key = XPM_MONO;
    status = XpmCreatePixmapFromData(dpy, root, data, &pix, &mask, &attr);

    // Need to create new Pixmaps with the mask applied.

    ins_pix = XCreatePixmap(dpy, root, width + shift, height + shift, depth);

    XSetForeground(dpy, gc, eb->core.background_pixel);
    XSetClipOrigin(dpy, gc, 0, 0);
    XSetClipMask(dpy, gc, None);
    XFillRectangle(dpy, ins_pix, gc, 0, 0, width + shift, height + shift);
    XSetClipMask(dpy, gc, mask);
    XSetForeground(dpy, gc, eb->primitive.top_shadow_color);
    XSetClipOrigin(dpy, gc, 2 * shift, 2 * shift);
    XFillRectangle(dpy, ins_pix, gc, 2 * shift, 2 * shift, width, height);
    XSetForeground(dpy, gc, eb->primitive.bottom_shadow_color);
    XSetClipOrigin(dpy, gc, shift, shift);
    XFillRectangle(dpy, ins_pix, gc, 0, 0, width + shift, height + shift);
    XtReleaseGC((Widget) eb, gc);

    XpmFreeAttributes(&attr);

    eb->enhancedbutton.pixmap_depth = depth;
    eb->enhancedbutton.pixmap_width = width;
    eb->enhancedbutton.pixmap_height = height;
    eb->enhancedbutton.normal_pixmap = sen_pix;
    eb->enhancedbutton.highlight_pixmap = high_pix;
    eb->enhancedbutton.insensitive_pixmap = ins_pix;
    eb->enhancedbutton.armed_pixmap = arm_pix;

    eb->enhancedbutton.doing_setvalues = True;
    eb->enhancedbutton.doing_setvalues = False;

    XFreePixmap(dpy, pix);
    XFreePixmap(dpy, mask);
}

#define	BUTTON_MASK ( \
	Button1Mask | Button2Mask | Button3Mask | Button4Mask | Button5Mask \
)

    static void
draw_shadows(XmEnhancedButtonWidget eb)
{
    GC		top_gc;
    GC		bottom_gc;
    Boolean	etched_in;

    if (!eb->primitive.shadow_thickness)
       return;

    if ((eb->core.width <= 2 * eb->primitive.highlight_thickness)
	    || (eb->core.height <= 2 * eb->primitive.highlight_thickness))
	return;

#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
    {
	XmDisplay	dpy;

	dpy = (XmDisplay) XmGetXmDisplay(XtDisplay(eb));
	etched_in = dpy->display.enable_etched_in_menu;
    }
#else
    etched_in = False;
#endif
    if (!etched_in ^ eb->pushbutton.armed)
    {
	top_gc = eb->primitive.top_shadow_GC;
	bottom_gc = eb->primitive.bottom_shadow_GC;
    }
    else
    {
	top_gc = eb->primitive.bottom_shadow_GC;
	bottom_gc = eb->primitive.top_shadow_GC;
    }

    XmeDrawShadows(XtDisplay(eb), XtWindow(eb),
	    top_gc,
	    bottom_gc,
	    eb->primitive.highlight_thickness,
	    eb->primitive.highlight_thickness,
	    eb->core.width - 2 * eb->primitive.highlight_thickness,
	    eb->core.height - 2 * eb->primitive.highlight_thickness,
	    eb->primitive.shadow_thickness,
	    (unsigned)(etched_in ? XmSHADOW_IN : XmSHADOW_OUT));
}

    static void
draw_highlight(XmEnhancedButtonWidget eb)
{
    eb->primitive.highlighted = True;
    eb->primitive.highlight_drawn = True;

    if (!XtWidth(eb) || !XtHeight(eb) || !eb->primitive.highlight_thickness)
	return;

    XmeDrawHighlight(XtDisplay(eb), XtWindow(eb),
	    eb->primitive.highlight_GC, 0, 0,
	    XtWidth(eb), XtHeight(eb),
	    eb->primitive.highlight_thickness);
}

    static void
draw_unhighlight(XmEnhancedButtonWidget eb)
{
    GC manager_background_GC;

    eb->primitive.highlighted = False;
    eb->primitive.highlight_drawn = False;

    if (!XtWidth(eb) || !XtHeight(eb) || !eb->primitive.highlight_thickness)
	return;

    if (XmIsManager(eb->core.parent))
    {
#ifdef UNHIGHLIGHTT
	XmSpecifyUnhighlightTrait UnhighlightT;

	if (((UnhighlightT = (XmSpecifyUnhighlightTrait) XmeTraitGet((XtPointer)
			    XtClass(eb->core.parent), XmQTspecifyUnhighlight))
		    != NULL) && (UnhighlightT->getUnhighlightGC != NULL))
	{
	    // if unhighlight trait in parent use specified GC...
	    manager_background_GC =
		 UnhighlightT->getUnhighlightGC(eb->core.parent, (Widget) eb);
	}
	else
	{
	    // ...otherwise, use parent's background GC
	    manager_background_GC = ((XmManagerWidget)
				    (eb->core.parent))->manager.background_GC;
	}
#else
	manager_background_GC = ((XmManagerWidget)
				    (eb->core.parent))->manager.background_GC;
#endif
	XmeDrawHighlight(XtDisplay(eb), XtWindow(eb),
			 manager_background_GC,
			 0, 0, XtWidth(eb), XtHeight(eb),
			 eb->primitive.highlight_thickness);
	if (!eb->pushbutton.armed && eb->primitive.shadow_thickness)
	    XmeClearBorder(XtDisplay(eb), XtWindow(eb),
		    eb->primitive.highlight_thickness,
		    eb->primitive.highlight_thickness,
		    eb->core.width - 2 * eb->primitive.highlight_thickness,
		    eb->core.height - 2 * eb->primitive.highlight_thickness,
		    eb->primitive.shadow_thickness);
    }
    else
	XmeClearBorder(XtDisplay(eb), XtWindow(eb), 0, 0, XtWidth(eb),
		       XtHeight(eb), eb->primitive.highlight_thickness);
}

    static void
draw_pixmap(XmEnhancedButtonWidget eb,
	    XEvent *event UNUSED,
	    Region region UNUSED)
{
    Pixmap	pix;
    GC		gc = eb->label.normal_GC;
    int		depth;
    Cardinal	width;
    Cardinal	height;
    Cardinal	w;
    Cardinal	h;
    int		x;
    int		y;

    if (!XtIsSensitive((Widget) eb))
	pix = eb->enhancedbutton.insensitive_pixmap;
    else
    {
	if (eb->primitive.highlighted && !eb->pushbutton.armed)
	    pix = eb->enhancedbutton.highlight_pixmap;
	else if (eb->pushbutton.armed)
	    pix = eb->enhancedbutton.armed_pixmap;
	else
	    pix = eb->enhancedbutton.normal_pixmap;
    }

    if (pix == None || !eb->enhancedbutton.pixmap_data)
	return;

    depth = eb->enhancedbutton.pixmap_depth;
    w = eb->enhancedbutton.pixmap_width;
    h = eb->enhancedbutton.pixmap_height;

    gc = eb->label.normal_GC;
    x = eb->primitive.highlight_thickness
	+ eb->primitive.shadow_thickness
	+ eb->label.margin_width;
    y = eb->primitive.highlight_thickness
	+ eb->primitive.shadow_thickness
	+ eb->label.margin_height;
    width = eb->core.width - 2 * x;
    if (w < width)
	width = w;
    height = eb->core.height - 2 * y;
    if (h < height)
	height = h;
    if (depth == (int)eb->core.depth)
	XCopyArea(XtDisplay(eb), pix, XtWindow(eb), gc, 0, 0,
		width, height, x, y);
    else if (depth == 1)
	XCopyPlane(XtDisplay(eb), pix, XtWindow(eb), gc, 0, 0,
		width, height, x, y, (unsigned long)1);
}

/*
 * Draw the label contained in the pushbutton.
 */
    static void
draw_label(XmEnhancedButtonWidget eb, XEvent *event, Region region)
{
    GC		tmp_gc = NULL;
    Boolean	replaceGC = False;
    Boolean	deadjusted = False;
#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
    XmDisplay	dpy = (XmDisplay)XmGetXmDisplay(XtDisplay(eb));
    Boolean	etched_in = dpy->display.enable_etched_in_menu;
#else
    Boolean	etched_in = False;
#endif

    if (eb->pushbutton.armed
	    && ((!Lab_IsMenupane(eb) && eb->pushbutton.fill_on_arm)
		|| (Lab_IsMenupane(eb) && etched_in)))
    {
	if (eb->label.label_type == (int)XmSTRING
		&& eb->pushbutton.arm_color == eb->primitive.foreground)
	{
	    tmp_gc = eb->label.normal_GC;
	    eb->label.normal_GC = eb->pushbutton.background_gc;
	    replaceGC = True;
	}
    }

    /*
     * If the button contains a labeled pixmap, we will take it instead of our
     * own pixmap.
     */

    if (eb->label.label_type == (int)XmPIXMAP)
    {
	if (eb->pushbutton.armed)
	{
	    if (eb->pushbutton.arm_pixmap != XmUNSPECIFIED_PIXMAP)
		eb->label.pixmap = eb->pushbutton.arm_pixmap;
	    else
		eb->label.pixmap = eb->pushbutton.unarm_pixmap;
	}
	else
	    // pushbutton is not armed
	    eb->label.pixmap = eb->pushbutton.unarm_pixmap;
    }

    /*
     *	Temporarily remove the Xm3D_ENHANCE_PIXEL hack ("adjustment") from the
     *	margin values, so we don't confuse Label.
     */
    if (eb->pushbutton.default_button_shadow_thickness > 0)
    {
	deadjusted = True;
	Lab_MarginLeft(eb) -= Xm3D_ENHANCE_PIXEL;
	Lab_MarginRight(eb) -= Xm3D_ENHANCE_PIXEL;
	Lab_MarginTop(eb) -= Xm3D_ENHANCE_PIXEL;
	Lab_MarginBottom(eb) -= Xm3D_ENHANCE_PIXEL;
    }

    {
	XtExposeProc expose;

	XTPROCESS_LOCK;
	expose = xmLabelClassRec.core_class.expose;
	XTPROCESS_UNLOCK;
	(*expose)((Widget) eb, event, region);
    }

    if (deadjusted)
    {
	Lab_MarginLeft(eb) += Xm3D_ENHANCE_PIXEL;
	Lab_MarginRight(eb) += Xm3D_ENHANCE_PIXEL;
	Lab_MarginTop(eb) += Xm3D_ENHANCE_PIXEL;
	Lab_MarginBottom(eb) += Xm3D_ENHANCE_PIXEL;
    }

    if (replaceGC)
	eb->label.normal_GC = tmp_gc;
}

    static void
Enter(Widget wid,
      XEvent *event,
      String *params UNUSED,
      Cardinal *num_params UNUSED)
{
    XmEnhancedButtonWidget eb = (XmEnhancedButtonWidget) wid;
    XmPushButtonCallbackStruct call_value;

    if (Lab_IsMenupane(eb))
    {
	if ((((ShellWidget) XtParent(XtParent(eb)))->shell.popped_up)
		&& _XmGetInDragMode((Widget) eb))
	{
#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
	    XmDisplay dpy = (XmDisplay) XmGetXmDisplay(XtDisplay(wid));
	    Boolean etched_in = dpy->display.enable_etched_in_menu;
#else
	    Boolean etched_in = False;
#endif

	    if (eb->pushbutton.armed)
		return;

	    // ...so KHelp event is delivered correctly.
	    _XmSetFocusFlag(XtParent(XtParent(eb)), XmFOCUS_IGNORE, TRUE);
	    XtSetKeyboardFocus(XtParent(XtParent(eb)), (Widget) eb);
	    _XmSetFocusFlag(XtParent(XtParent(eb)), XmFOCUS_IGNORE, FALSE);

	    eb->pushbutton.armed = TRUE;

	    ((XmManagerWidget) XtParent(wid))->manager.active_child = wid;

	    // etched in menu button
	    if (etched_in && !XmIsTearOffButton(eb))
	    {
		XFillRectangle(XtDisplay(eb), XtWindow(eb),
			       eb->pushbutton.fill_gc,
			       0, 0, eb->core.width, eb->core.height);
		draw_label(eb, event, NULL);
		draw_pixmap(eb, event, NULL);
	    }

	    if ((eb->core.width > 2 * eb->primitive.highlight_thickness)
		    && (eb->core.height >
				       2 * eb->primitive.highlight_thickness))
	    {
		XmeDrawShadows(XtDisplay(eb), XtWindow(eb),
			eb->primitive.top_shadow_GC,
			eb->primitive.bottom_shadow_GC,
			eb->primitive.highlight_thickness,
			eb->primitive.highlight_thickness,
			eb->core.width - 2 * eb->primitive.highlight_thickness,
			eb->core.height - 2 * eb->primitive.highlight_thickness,
			eb->primitive.shadow_thickness,
			(unsigned)(etched_in ? XmSHADOW_IN : XmSHADOW_OUT));
	    }

	    if (eb->pushbutton.arm_callback)
	    {
		XFlush(XtDisplay(eb));

		call_value.reason = (int)XmCR_ARM;
		call_value.event = event;
		XtCallCallbackList((Widget) eb,
				   eb->pushbutton.arm_callback,
				   &call_value);
	    }
	}
    }
    else
    {
	XtExposeProc expose;

	_XmPrimitiveEnter((Widget) eb, event, NULL, NULL);
	if (eb->pushbutton.armed == TRUE)
	{
	    XTPROCESS_LOCK;
	    expose = XtClass(eb)->core_class.expose;
	    XTPROCESS_UNLOCK;
	    (*expose) (wid, event, (Region) NULL);
	}

	draw_highlight(eb);
	draw_shadows(eb);
	draw_pixmap(eb, event, NULL);
    }
}

    static void
Leave(Widget wid,
      XEvent *event,
      String *params UNUSED,
      Cardinal *num_params UNUSED)
{
    XmEnhancedButtonWidget eb = (XmEnhancedButtonWidget)wid;
    XmPushButtonCallbackStruct call_value;

    if (Lab_IsMenupane(eb))
    {
#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
	XmDisplay dpy = (XmDisplay) XmGetXmDisplay(XtDisplay(wid));
	Boolean etched_in = dpy->display.enable_etched_in_menu;
#else
	Boolean etched_in = False;
#endif

	if (_XmGetInDragMode((Widget)eb)
		&& eb->pushbutton.armed
		&& ( // !ActiveTearOff ||
				       event->xcrossing.mode == NotifyNormal))
	{
	    eb->pushbutton.armed = FALSE;

	    ((XmManagerWidget) XtParent(wid))->manager.active_child = NULL;

	    if (etched_in && !XmIsTearOffButton(eb))
	    {
		XFillRectangle(XtDisplay(eb), XtWindow(eb),
			       eb->pushbutton.background_gc,
			       0, 0, eb->core.width, eb->core.height);
		draw_label(eb, event, NULL);
		draw_pixmap(eb, event, NULL);
	    }
	    else
		XmeClearBorder
		    (XtDisplay(eb), XtWindow(eb),
		     eb->primitive.highlight_thickness,
		     eb->primitive.highlight_thickness,
		     eb->core.width -
		     2 * eb->primitive.highlight_thickness,
		     eb->core.height -
		     2 * eb->primitive.highlight_thickness,
		     eb->primitive.shadow_thickness);

	    if (eb->pushbutton.disarm_callback)
	    {
		XFlush(XtDisplay(eb));

		call_value.reason = (int)XmCR_DISARM;
		call_value.event = event;
		XtCallCallbackList((Widget) eb,
				   eb->pushbutton.disarm_callback,
				   &call_value);
	    }
	}
    }
    else
    {
	_XmPrimitiveLeave((Widget) eb, event, NULL, NULL);

	if (eb->pushbutton.armed == TRUE)
	{
	    XtExposeProc expose;
	    eb->pushbutton.armed = FALSE;
	    XTPROCESS_LOCK;
	    expose = XtClass(eb)->core_class.expose;
	    XTPROCESS_UNLOCK;
	    (*expose) (wid, event, (Region)NULL);
	    draw_unhighlight(eb);
	    draw_pixmap(eb, event, NULL);
	    eb->pushbutton.armed = TRUE;
	}
	else
	{
	    draw_unhighlight(eb);
	    draw_pixmap(eb, event, NULL);
	}
    }
}

#define IsNull(p)   ((p) == XmUNSPECIFIED_PIXMAP)

    static void
set_size(XmEnhancedButtonWidget newtb)
{
    unsigned int w = 0;
    unsigned int h = 0;

    _XmCalcLabelDimensions((Widget) newtb);

    // Find out how big the pixmap is
    if (newtb->enhancedbutton.pixmap_data
	    && !IsNull(newtb->label.pixmap)
	    && !IsNull(newtb->enhancedbutton.normal_pixmap))
    {
	w = newtb->enhancedbutton.pixmap_width;
	h = newtb->enhancedbutton.pixmap_height;
    }

    /*
     * Please note that we manipulate the width only in case of push buttons
     * not used in the context of a menu pane.
     */
    if (Lab_IsMenupane(newtb))
    {
	newtb->label.margin_left = w + 2 * (newtb->primitive.shadow_thickness
		+ newtb->primitive.highlight_thickness)
	    + newtb->label.margin_width;
    }
    else
    {
	newtb->label.margin_left = w;
	newtb->core.width = w + 2 * (newtb->primitive.shadow_thickness
		+ newtb->primitive.highlight_thickness
		+ newtb->label.margin_width)
	    + newtb->label.TextRect.width;

	if (newtb->label.TextRect.width > 0)
	{
	    newtb->label.margin_left += newtb->label.margin_width
					  + newtb->primitive.shadow_thickness;
	    newtb->core.width += newtb->label.margin_width
					  + newtb->primitive.shadow_thickness;
	}
    }
    if (newtb->label.TextRect.height < h)
    {
	newtb->core.height = h  + 2 * (newtb->primitive.shadow_thickness
		+ newtb->primitive.highlight_thickness
		+ newtb->label.margin_height);
    }
    else
    {
	// FIXME: We should calculate a drawing offset for the pixmap here to
	// adjust it.
    }

#if 0
    printf("%d %d %d %d %d %d - %d %d\n", newtb->enhancedbutton.normal_pixmap,
	    h, newtb->core.height,
	    newtb->primitive.shadow_thickness,
	    newtb->primitive.highlight_thickness,
	    newtb->label.margin_height,
	    newtb->core.width,
	    newtb->core.height);
#endif

    // Invoke Label's Resize procedure.
    {
	XtWidgetProc resize;
	XTPROCESS_LOCK;
	resize = xmLabelClassRec.core_class.resize;
	XTPROCESS_UNLOCK;

	(* resize) ((Widget) newtb);
    }
}

    static void
Initialize(Widget rq, Widget ebw, ArgList args UNUSED, Cardinal *n UNUSED)
{
    XmEnhancedButtonWidget  request = (XmEnhancedButtonWidget)rq;
    XmEnhancedButtonWidget  eb = (XmEnhancedButtonWidget)ebw;
    XtWidgetProc	    resize;

    XTPROCESS_LOCK;
    resize = xmLabelClassRec.core_class.resize;
    XTPROCESS_UNLOCK;

    // Create a bitmap for stippling (Drawable resources are cheap).
    if (STIPPLE_BITMAP == None)
    {
	Display *dpy = XtDisplay((Widget) request);
	Window	rootW = DefaultRootWindow(dpy);

	STIPPLE_BITMAP = XCreateBitmapFromData(dpy, rootW, stipple_bits,
		stipple_width, stipple_height);
    }
    eb->enhancedbutton.doing_setvalues = False;

    // First see what type of extended label this is.
    if (eb->enhancedbutton.pixmap_data)
    {
	XmString str;
	set_pixmap(eb);

	// FIXME: this is not the perfect way to deal with menus, which do not
	// have any string set right now.
	str = XmStringCreateLocalized("");
	XtVaSetValues((Widget) eb, XmNlabelString, str, NULL);
	XmStringFree(str);
    }
    eb->label.pixmap = eb->enhancedbutton.normal_pixmap;

    if (request->core.width == 0)
	eb->core.width = 0;
    if (request->core.height == 0)
	eb->core.height = 0;
    set_size(eb);

    (* resize)((Widget)eb);
}

    static void
free_pixmaps(XmEnhancedButtonWidget eb)
{
    /*
     * Clear the old pixmaps.
     */
    Pixmap norm_pix = eb->enhancedbutton.normal_pixmap;
    Pixmap arm_pix = eb->enhancedbutton.armed_pixmap;
    Pixmap insen_pix = eb->enhancedbutton.insensitive_pixmap;
    Pixmap high_pix = eb->enhancedbutton.highlight_pixmap;

    if (norm_pix != None && norm_pix != XmUNSPECIFIED_PIXMAP)
	XFreePixmap(XtDisplay(eb), norm_pix);

    if (arm_pix != None && arm_pix != XmUNSPECIFIED_PIXMAP)
	XFreePixmap(XtDisplay(eb), arm_pix);

    if (insen_pix != None && insen_pix != XmUNSPECIFIED_PIXMAP)
	XFreePixmap(XtDisplay(eb), insen_pix);

    if (high_pix != None && high_pix != XmUNSPECIFIED_PIXMAP)
	XFreePixmap(XtDisplay(eb), high_pix);
}

    static void
Destroy(Widget w)
{
    if (!XmIsEnhancedButton(w))
	return;

    free_pixmaps((XmEnhancedButtonWidget)w);
}

    static Boolean
SetValues(Widget current,
	  Widget request UNUSED,
	  Widget new,
	  ArgList args UNUSED,
	  Cardinal *n UNUSED)
{
    XmEnhancedButtonWidget  cur = (XmEnhancedButtonWidget) current;
    XmEnhancedButtonWidget  eb = (XmEnhancedButtonWidget) new;
    Boolean		    redraw = False;
    Boolean		    change = True;
    Display		    *dpy = XtDisplay(current);

#define NOT_EQUAL(field)       (cur->field != eb->field)

    /*
     * Make sure that lost sensitivity is causing the border to vanish as well.
     */
    if (NOT_EQUAL(core.sensitive) && !Lab_IsMenupane(current))
    {
	if (cur->core.sensitive == True)
	{
	    draw_unhighlight(eb);
	}
	else
	{
	    int		    r_x;
	    int		    r_y;
	    unsigned int    r_height;
	    unsigned int    r_width;
	    unsigned int    r_border;
	    unsigned int    r_depth;
	    int		    root_x;
	    int		    root_y;
	    int		    win_x;
	    int		    win_y;
	    Window	    root;
	    Window	    root_q;
	    Window	    child;
	    unsigned int    mask;

	    /*
	     * Artificially let the highlight appear if the mouse is over us.
	     */
	    // Best way to get the root window of object:
	    XGetGeometry(dpy, XtWindow(cur), &root, &r_x, &r_y, &r_width,
			 &r_height, &r_border, &r_depth);
	    XQueryPointer(XtDisplay(cur), XtWindow(cur), &root_q, &child,
			  &root_x, &root_y, &win_x, &win_y, &mask);

	    if (root == root_q)
	    {
		if ((win_x < 0) || (win_y < 0))
		    return False;

		if ((win_x > (int)r_width) || (win_y > (int)r_height))
		    return False;
		draw_highlight(eb);
		draw_shadows(eb);
	    }
	}

	return True;
    }

    /*
     * Check for changed ExtLabelString.
     */
    if (NOT_EQUAL(primitive.shadow_thickness))
    {
	redraw = True;
	// Don't change the pixmaps
	change = False;
    }

    if (NOT_EQUAL(primitive.foreground))
	redraw = True;
    if (NOT_EQUAL(core.background_pixel))
	redraw = True;
    if (NOT_EQUAL(pushbutton.fill_on_arm))
	redraw = True;
    if (NOT_EQUAL(enhancedbutton.spacing))
	redraw = True;
    if (NOT_EQUAL(enhancedbutton.label_location))
    {
	redraw = True;
	change = False;
    }
    if (NOT_EQUAL(label._label))
    {
	redraw = True;
	set_size(eb);
    }

    if (redraw == True)
    {
	if (change)
	    set_pixmap(eb);
	if (eb->primitive.highlighted)
	    eb->label.pixmap = eb->enhancedbutton.highlight_pixmap;
	else
	    eb->label.pixmap = eb->enhancedbutton.normal_pixmap;
	if (change)
	    set_size(eb);
	redraw = False;
    }

    return redraw;
}

    static void
Redisplay(Widget w, XEvent *event, Region region)
{
    XmEnhancedButtonWidget  eb = (XmEnhancedButtonWidget) w;
#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
    XmDisplay		    dpy;
    XtEnum		    default_button_emphasis;
#endif
    XRectangle		    box;
    int			    dx;
    int			    adjust;
    short		    fill = 0;

    if (!XtIsRealized((Widget)eb))
	return;

#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
    dpy = (XmDisplay)XmGetXmDisplay(XtDisplay(eb));
    default_button_emphasis = dpy->display.default_button_emphasis;
#endif

    /*
     * Compute the area allocated to the label of the pushbutton; fill in the
     * dimensions in the box.
     */

    if ((eb->pushbutton.arm_color == eb->primitive.top_shadow_color)
	    || (eb->pushbutton.arm_color == eb->primitive.bottom_shadow_color))
	fill = 1;

    if (eb->pushbutton.compatible)
	adjust = eb->pushbutton.show_as_default;
    else
	adjust = eb->pushbutton.default_button_shadow_thickness;

    if (adjust > 0)
    {
	adjust = adjust + eb->primitive.shadow_thickness;
	adjust = (adjust << 1);
	dx = eb->primitive.highlight_thickness + adjust + fill;
    }
    else
	dx = (eb->primitive.highlight_thickness
		+ eb->primitive.shadow_thickness + fill);

    box.x = dx;
    box.y = dx;
    adjust = (dx << 1);
    box.width  = eb->core.width - adjust;
    box.height = eb->core.height - adjust;

    /*
     * Redraw the background.
     */
    if (!Lab_IsMenupane(eb))
    {
	GC  gc;

	// Don't shade if the button contains a label with a pixmap, since
	// there is no variant of the label available with the needed
	// background.
	if (eb->pushbutton.armed && eb->pushbutton.fill_on_arm)
	{
		if (eb->label.label_type == (int)XmPIXMAP)
		{
		    if (eb->pushbutton.arm_pixmap != XmUNSPECIFIED_PIXMAP)
			gc = eb->pushbutton.fill_gc;
		    else
			gc = eb->pushbutton.background_gc;
		}
		else
		    gc = eb->pushbutton.fill_gc;
	}
	else
	    gc = eb->pushbutton.background_gc;
	// really need to fill with background if not armed ?
	if (gc)
	    XFillRectangle(XtDisplay(eb), XtWindow(eb), gc,
		    box.x, box.y, box.width, box.height);
    }

    draw_label(eb, event, region);

    if (Lab_IsMenupane(eb))
    {
	if (eb->pushbutton.armed)
	    (*(((XmPushButtonWidgetClass)XtClass(eb))
	       ->primitive_class.border_highlight))(w);
	draw_pixmap(eb, event, region);
    }
    else
    {
	adjust = 0;

#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
	/*
	 *  NOTE: PushButton has two types of shadows: primitive-shadow and
	 *  default-button-shadow.  If pushbutton is in a menu only primitive
	 *  shadows are drawn.
	 */
	switch (default_button_emphasis)
	{
	    case XmEXTERNAL_HIGHLIGHT:
		adjust = (eb->primitive.highlight_thickness -
			 (eb->pushbutton.default_button_shadow_thickness
			  ?  Xm3D_ENHANCE_PIXEL : 0));
		break;

	    case XmINTERNAL_HIGHLIGHT:
		break;

	    default:
		assert(FALSE);
		return;
	}
#endif

	/*
	 * Clear the area not occupied by label with parents background color.
	 * Label will invoke BorderUnhighlight() on the highlight_thickness
	 * area, which is redundant when XmEXTERNAL_HIGHLIGHT default button
	 * shadow emphasis is used.
	 */
	if (box.x > adjust)
	{
	    int borderwidth =box.x - adjust;
	    int rectwidth = eb->core.width - 2 * adjust;
	    int rectheight = eb->core.height - 2 * adjust;

	    if (XmIsManager(XtParent(eb)))
	    {
		XmeDrawHighlight(XtDisplay(eb), XtWindow(eb),
						     XmParentBackgroundGC(eb),
			adjust, adjust, rectwidth, rectheight, borderwidth);
	    }
	    else
	    {
		XmeClearBorder(XtDisplay(eb), XtWindow(eb),
			  adjust, adjust, rectwidth, rectheight, borderwidth);
	    }

#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
	    switch (default_button_emphasis)
	    {
		case XmINTERNAL_HIGHLIGHT:
		    // The call above erases the border highlighting.
		    if (eb->primitive.highlight_drawn)
			(*(((XmPushButtonWidgetClass) XtClass (eb))
			   ->primitive_class.border_highlight)) ((Widget) eb) ;
		    break;

		default:
		    break;
	    }
#endif
	}

	if (eb->pushbutton.default_button_shadow_thickness)
	{
	    if (eb->pushbutton.show_as_default)
	    {
		/*
		 *  - get the topShadowColor and bottomShadowColor from the
		 *  parent; use those colors to construct top and bottom gc;
		 *  use these GCs to draw the shadows of the button.
		 *
		 *  - Should not be called if pushbutton is in a row column or
		 *  in a menu.
		 *
		 *  - Should be called only if a defaultbuttonshadow is to be
		 *  drawn.
		 */
		GC	    top_gc;
		GC	    bottom_gc;
		int	    default_button_shadow_thickness;
		int	    x, y, width, height, delta;
		Widget	    parent;

		if (eb->pushbutton.compatible
				     && (eb->pushbutton.show_as_default == 0))
		    return;

		if (!eb->pushbutton.compatible
			&& (eb->pushbutton.default_button_shadow_thickness
									== 0))
		    return;

		delta = eb->primitive.highlight_thickness;

		/*
		 * May need more complex computation for getting the GCs.
		 */
		parent = XtParent(eb);
		if (XmIsManager(parent))
		{
		    // Use the parent's GC so monochrome works.
		    bottom_gc = XmParentTopShadowGC(eb);
		    top_gc = XmParentBottomShadowGC(eb);
		}
		else
		{
		    // Use your own pixel for drawing.
		    bottom_gc = eb->primitive.top_shadow_GC;
		    top_gc = eb->primitive.bottom_shadow_GC;
		}

		if ((bottom_gc == None) || (top_gc == None))
		    return;


		if (eb->pushbutton.compatible)
		    default_button_shadow_thickness =
					       eb->pushbutton.show_as_default;
		else
		    default_button_shadow_thickness =
			       eb->pushbutton.default_button_shadow_thickness;

#if !defined(LESSTIF_VERSION) && (XmVersion > 1002)
		/*
		 * Compute location of bounding box to contain the
		 * defaultButtonShadow.
		 */
		switch (default_button_emphasis)
		{
		    case XmEXTERNAL_HIGHLIGHT:
			delta = eb->primitive.highlight_thickness;
			break;

		    case XmINTERNAL_HIGHLIGHT:
			delta = Xm3D_ENHANCE_PIXEL;
			break;

		    default:
			assert(FALSE);
			return;
		}
#endif

		x = y = delta;
		width = eb->core.width - 2 * delta;
		height = eb->core.height - 2 * delta;

		if ((width > 0) && (height > 0))
		    XmeDrawShadows(XtDisplay(eb), XtWindow(eb),
			    top_gc, bottom_gc, x, y, width, height,
			    default_button_shadow_thickness,
			    (unsigned)XmSHADOW_OUT);
	    }
	}

	if (eb->primitive.highlight_drawn)
	    draw_shadows(eb);
	draw_pixmap(eb, event, region);
    }
}

    static void
BorderHighlight(Widget w)
{
    XmEnhancedButtonWidget eb = (XmEnhancedButtonWidget)w;

    (*(xmPushButtonClassRec.primitive_class.border_highlight))(w);
    draw_pixmap(eb, NULL, NULL);
}

    static void
BorderUnhighlight(Widget w)
{
    XmEnhancedButtonWidget eb = (XmEnhancedButtonWidget)w;

    (*(xmPushButtonClassRec.primitive_class.border_unhighlight))(w);
    draw_pixmap(eb, NULL, NULL);
}

#endif // FEAT_TOOLBAR