src/rt/x10.c

/* Copyright (c) 1987 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  x10.c - driver for X-windows version 10.4
 *
 *     5/7/87
 */

#include  <stdio.h>

#include  <sys/ioctl.h>

#include  <X/Xlib.h>
#include  <X/cursors/bcross.cursor>
#include  <X/cursors/bcross_mask.cursor>

#include  "color.h"

#include  "driver.h"

#include  "xtwind.h"

#define GAMMA           2.2             /* exponent for color correction */

#define BORWIDTH        5               /* border width */
#define COMHEIGHT       (COMLH*COMCH)   /* command line height (pixels) */
#define MINWIDTH        (32*COMCW)      /* minimum graphics window width */
#define MINHEIGHT       MINWIDTH                /* minimum graphics window height */

#define COMFN           "8x13"          /* command line font name */
#define COMLH           3               /* number of command lines */
#define COMCW           8               /* approx. character width (pixels) */
#define COMCH           13              /* approx. character height (pixels) */

#define  levptr(etype)  ((etype *)&thisevent)

static XEvent  thisevent;               /* current event */

static int  ncolors = 0;                /* color table size */
static int  *pixval;                    /* allocated pixel values */

static Display  *ourdisplay = NULL;     /* our display */

static Window  gwind = 0;               /* our graphics window */

static Cursor  pickcursor = 0;          /* cursor used for picking */

static int  gwidth, gheight;            /* graphics window size */

static TEXTWIND  *comline = NULL;       /* our command line */

static char  c_queue[64];               /* input queue */
static int  c_first = 0;                /* first character in queue */
static int  c_last = 0;                 /* last character in queue */

extern char  *malloc(), *getcombuf();

extern char  *progname;

static int  x_close(), x_clear(), x_paintr(), x_errout(),
                x_getcur(), x_comout(), x_comin(), x_flush();

static struct driver  x_driver = {
        x_close, x_clear, x_paintr, x_getcur,
        x_comout, x_comin, x_flush, 1.0
};


struct driver *
x_init(name, id)                /* initialize driver */
char  *name, *id;
{
        char  defgeom[32];
        OpaqueFrame  mainframe;

        ourdisplay = XOpenDisplay(NULL);
        if (ourdisplay == NULL) {
                stderr_v("cannot open X-windows; DISPLAY variable set?\n");
                return(NULL);
        }
        if (DisplayPlanes() < 4) {
                stderr_v("not enough colors\n");
                return(NULL);
        }
        make_gmap(GAMMA);                       /* make color map */

        pickcursor = XCreateCursor(bcross_width, bcross_height,
                        bcross_bits, bcross_mask_bits,
                        bcross_x_hot, bcross_y_hot,
                        BlackPixel, WhitePixel, GXcopy);
        mainframe.bdrwidth = BORWIDTH;
        mainframe.border = BlackPixmap;
        mainframe.background = BlackPixmap;
        sprintf(defgeom, "=%dx%d+0+22", DisplayWidth()-(2*BORWIDTH),
                        DisplayHeight()-(2*BORWIDTH+22));
        gwind = XCreate("X10 display driver", progname, NULL, defgeom,
                        &mainframe, MINWIDTH, MINHEIGHT+COMHEIGHT);
        if (gwind == 0) {
                stderr_v("can't create window\n");
                return(NULL);
        }
        XStoreName(gwind, id);
        XSelectInput(gwind, KeyPressed|ButtonPressed|
                        ExposeWindow|ExposeRegion|UnmapWindow);
        gwidth = mainframe.width;
        gheight = mainframe.height-COMHEIGHT;
        x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
        x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
        x_driver.inpready = 0;
        cmdvec = x_comout;                      /* set error vectors */
        if (wrnvec != NULL)
                wrnvec = x_errout;
        return(&x_driver);
}


static
x_close()                       /* close our display */
{
        cmdvec = NULL;                          /* reset error vectors */
        if (wrnvec != NULL)
                wrnvec = stderr_v;
        if (ourdisplay == NULL)
                return;
        if (comline != NULL) {
                xt_close(comline);
                comline = NULL;
        }
        if (gwind != 0) {
                XDestroyWindow(gwind);
                gwind = 0;
        }
        XFreeCursor(pickcursor);
        freepixels();
        XCloseDisplay(ourdisplay);
        ourdisplay = NULL;
}


static
x_clear(xres, yres)                     /* clear our display */
int  xres, yres;
{
        if (xres != gwidth || yres != gheight) {        /* new window */
                if (comline != NULL)
                        xt_close(comline);
                XChangeWindow(gwind, xres, yres+COMHEIGHT);
                comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
                if (comline == NULL) {
                        stderr_v("Cannot open command line window\n");
                        quit(1);
                }
                gwidth = xres;
                gheight = yres;
        } else                                          /* just clear */
                XClear(gwind);
                                                /* reinitialize color table */
        if (getpixels() == 0)
                stderr_v("cannot allocate colors\n");
        else
                new_ctab(ncolors);

        XMapWindow(gwind);                      /* make sure it's mapped */
        XSync(1);                               /* discard input */
        return;
}


static
x_paintr(col, xmin, ymin, xmax, ymax)           /* fill a rectangle */
COLOR  col;
int  xmin, ymin, xmax, ymax;
{
        extern int  xnewcolr();         /* pixel assignment routine */

        if (ncolors > 0) {
                XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
                                pixval[get_pixel(col, xnewcolr)]);
        }
}


static
x_flush()                       /* flush output */
{
        if (ncolors <= 0)       /* output necessary for death */
                XPixSet(gwind,0,0,1,1,BlackPixel);
        while (XPending() > 0)
                getevent();

}


static
x_comin(inp, prompt)            /* read in a command line */
char  *inp, *prompt;
{
        extern int  x_getc();

        if (prompt != NULL)
                if (fromcombuf(inp, &x_driver))
                        return;
                else
                        xt_puts(prompt, comline);
        xt_cursor(comline, TBLKCURS);
        editline(inp, x_getc, x_comout);
        xt_cursor(comline, TNOCURS);
}


static
x_comout(out)                   /* output a string to command line */
char  *out;
{
        if (comline == NULL)
                return;
        xt_puts(out, comline);
        if (out[strlen(out)-1] == '\n')
                XFlush();
}


static
x_errout(msg)                   /* output an error message */
char  *msg;
{
        stderr_v(msg);          /* send to stderr also! */
        x_comout(msg);
}


static int
x_getcur(xp, yp)                /* get cursor position */
int  *xp, *yp;
{
        while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0)
                sleep(1);
        XFocusKeyboard(gwind);
        do
                getevent();
        while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed);
        *xp = levptr(XKeyOrButtonEvent)->x;
        *yp = gheight-1 - levptr(XKeyOrButtonEvent)->y;
        XFocusKeyboard(RootWindow);
        XUngrabMouse();
        XFlush();                               /* insure release */
        if (c_last > c_first)                   /* key pressed */
                return(x_getc());
                                                /* button pressed */
        switch (levptr(XKeyOrButtonEvent)->detail & 0377) {
        case LeftButton:
                return(MB1);
        case MiddleButton:
                return(MB2);
        case RightButton:
                return(MB3);
        }
        return(ABORT);
}


static
xnewcolr(ndx, r, g, b)          /* enter a color into hardware table */
int  ndx;
int  r, g, b;
{
        Color  xcolor;

        xcolor.pixel = pixval[ndx];
        xcolor.red = r << 8;
        xcolor.green = g << 8;
        xcolor.blue = b << 8;

        XStoreColor(&xcolor);
}


static int
getpixels()                             /* get the color map */
{
        int  planes;

        if (ncolors > 0)
                return(ncolors);
        for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){
                pixval = (int *)malloc(ncolors*sizeof(int));
                if (pixval == NULL)
                        break;
                if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0)
                        return(ncolors);
                free((char *)pixval);
        }
        return(ncolors = 0);
}


static
freepixels()                            /* free our pixels */
{
        if (ncolors == 0)
                return;
        XFreeColors(pixval, ncolors, 0);
        free((char *)pixval);
        ncolors = 0;
}


static int
x_getc()                        /* get a command character */
{
        while (c_last <= c_first) {
                c_first = c_last = 0;           /* reset */
                getevent();                     /* wait for key */
        }
        x_driver.inpready--;
        return(c_queue[c_first++]);
}


static
getevent()                      /* get next event */
{
        XNextEvent(levptr(XEvent));
        switch (levptr(XEvent)->type) {
        case KeyPressed:
                getkey(levptr(XKeyPressedEvent));
                break;
        case ExposeWindow:
                windowchange(levptr(XExposeEvent));
                break;
        case ExposeRegion:
                fixwindow(levptr(XExposeEvent));
                break;
        case UnmapWindow:
                if (levptr(XUnmapEvent)->subwindow == 0)
                        freepixels();
                break;
        case ButtonPressed:             /* handled in x_getcur() */
                break;
        }
}


static
windowchange(eexp)                      /* process window change event */
register XExposeEvent  *eexp;
{
        if (eexp->subwindow != 0) {
                fixwindow(eexp);
                return;
        }
                                        /* check for change in size */
        if (eexp->width != gwidth || eexp->height-COMHEIGHT != gheight) {
                gwidth = eexp->width;
                gheight = eexp->height-COMHEIGHT;
                x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
                x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
                strcpy(getcombuf(&x_driver), "new\n");
                return;
        }
                                        /* remap colors */
        if (getpixels() == 0) {
                stderr_v("cannot allocate colors\n");
                return;
        }
        new_ctab(ncolors);
                                        /* redraw */
        fixwindow(eexp);
}


static
getkey(ekey)                            /* get input key */
register XKeyPressedEvent  *ekey;
{
        int  n;
        register char  *str;

        str = XLookupMapping(ekey, &n);
        while (n-- > 0 && c_last < sizeof(c_queue)) {
                c_queue[c_last++] = *str++;
                x_driver.inpready++;
        }
}


static
fixwindow(eexp)                         /* repair damage to window */
register XExposeEvent  *eexp;
{
        if (eexp->subwindow == 0)
                sprintf(getcombuf(&x_driver), "repaint %d %d %d %d\n",
                        eexp->x, gheight - eexp->y - eexp->height,
                        eexp->x + eexp->width, gheight - eexp->y);
        else if (eexp->subwindow == comline->w)
                xt_redraw(comline);
}
Revision:	1.28
Committed:	Mon Mar 12 11:08:46 1990 UTC (35 years, 1 month ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.27:	+2 -2 lines
Log Message:	fixed function predeclarations for fussy compilers
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1987 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* x10.c - driver for X-windows version 10.4
9			*
10			* 5/7/87
11			*/
12
13			#include <stdio.h>
14
15			#include <sys/ioctl.h>
16
17			#include <X/Xlib.h>
18			#include <X/cursors/bcross.cursor>
19			#include <X/cursors/bcross_mask.cursor>
20
21			#include "color.h"
22
23			#include "driver.h"
24
25			#include "xtwind.h"
26
27	greg	1.12	#define GAMMA 2.2 /* exponent for color correction */
28	greg	1.1
29			#define BORWIDTH 5 /* border width */
30			#define COMHEIGHT (COMLHCOMCH) / command line height (pixels) */
31	greg	1.18	#define MINWIDTH (32COMCW) / minimum graphics window width */
32	greg	1.26	#define MINHEIGHT MINWIDTH /* minimum graphics window height */
33	greg	1.1
34			#define COMFN "8x13" /* command line font name */
35			#define COMLH 3 /* number of command lines */
36			#define COMCW 8 /* approx. character width (pixels) */
37			#define COMCH 13 /* approx. character height (pixels) */
38
39			#define levptr(etype) ((etype *)&thisevent)
40
41			static XEvent thisevent; /* current event */
42
43			static int ncolors = 0; /* color table size */
44	greg	1.12	static int pixval; / allocated pixel values */
45	greg	1.1
46			static Display ourdisplay = NULL; / our display */
47
48			static Window gwind = 0; /* our graphics window */
49
50			static Cursor pickcursor = 0; /* cursor used for picking */
51
52	greg	1.24	static int gwidth, gheight; /* graphics window size */
53	greg	1.1
54			static TEXTWIND comline = NULL; / our command line */
55
56			static char c_queue[64]; /* input queue */
57			static int c_first = 0; /* first character in queue */
58			static int c_last = 0; /* last character in queue */
59
60	greg	1.18	extern char malloc(), getcombuf();
61	greg	1.1
62	greg	1.21	extern char *progname;
63
64	greg	1.28	static int x_close(), x_clear(), x_paintr(), x_errout(),
65	greg	1.25	x_getcur(), x_comout(), x_comin(), x_flush();
66	greg	1.1
67			static struct driver x_driver = {
68			x_close, x_clear, x_paintr, x_getcur,
69	greg	1.25	x_comout, x_comin, x_flush, 1.0
70	greg	1.1	};
71
72
73			struct driver *
74	greg	1.16	x_init(name, id) /* initialize driver */
75			char name, id;
76	greg	1.1	{
77	greg	1.19	char defgeom[32];
78			OpaqueFrame mainframe;
79
80	greg	1.1	ourdisplay = XOpenDisplay(NULL);
81			if (ourdisplay == NULL) {
82	greg	1.2	stderr_v("cannot open X-windows; DISPLAY variable set?\n");
83	greg	1.1	return(NULL);
84			}
85			if (DisplayPlanes() < 4) {
86			stderr_v("not enough colors\n");
87			return(NULL);
88			}
89	greg	1.14	make_gmap(GAMMA); /* make color map */
90	greg	1.1
91			pickcursor = XCreateCursor(bcross_width, bcross_height,
92			bcross_bits, bcross_mask_bits,
93			bcross_x_hot, bcross_y_hot,
94			BlackPixel, WhitePixel, GXcopy);
95	greg	1.19	mainframe.bdrwidth = BORWIDTH;
96			mainframe.border = BlackPixmap;
97			mainframe.background = BlackPixmap;
98			sprintf(defgeom, "=%dx%d+0+22", DisplayWidth()-(2*BORWIDTH),
99			DisplayHeight()-(2*BORWIDTH+22));
100	greg	1.21	gwind = XCreate("X10 display driver", progname, NULL, defgeom,
101	greg	1.19	&mainframe, MINWIDTH, MINHEIGHT+COMHEIGHT);
102			if (gwind == 0) {
103			stderr_v("can't create window\n");
104			return(NULL);
105			}
106			XStoreName(gwind, id);
107			XSelectInput(gwind, KeyPressed\|ButtonPressed\|
108			ExposeWindow\|ExposeRegion\|UnmapWindow);
109	greg	1.24	gwidth = mainframe.width;
110			gheight = mainframe.height-COMHEIGHT;
111			x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
112			x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
113	greg	1.1	x_driver.inpready = 0;
114	greg	1.5	cmdvec = x_comout; /* set error vectors */
115	greg	1.1	if (wrnvec != NULL)
116			wrnvec = x_errout;
117			return(&x_driver);
118			}
119
120
121			static
122			x_close() /* close our display */
123			{
124	greg	1.5	cmdvec = NULL; /* reset error vectors */
125	greg	1.1	if (wrnvec != NULL)
126			wrnvec = stderr_v;
127			if (ourdisplay == NULL)
128			return;
129			if (comline != NULL) {
130			xt_close(comline);
131			comline = NULL;
132			}
133			if (gwind != 0) {
134			XDestroyWindow(gwind);
135			gwind = 0;
136			}
137			XFreeCursor(pickcursor);
138	greg	1.12	freepixels();
139	greg	1.1	XCloseDisplay(ourdisplay);
140			ourdisplay = NULL;
141			}
142
143
144			static
145			x_clear(xres, yres) /* clear our display */
146			int xres, yres;
147			{
148			if (xres != gwidth \|\| yres != gheight) { /* new window */
149			if (comline != NULL)
150			xt_close(comline);
151	greg	1.19	XChangeWindow(gwind, xres, yres+COMHEIGHT);
152	greg	1.1	comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
153	greg	1.19	if (comline == NULL) {
154			stderr_v("Cannot open command line window\n");
155			quit(1);
156			}
157	greg	1.1	gwidth = xres;
158			gheight = yres;
159			} else /* just clear */
160			XClear(gwind);
161	greg	1.17	/* reinitialize color table */
162	greg	1.22	if (getpixels() == 0)
163	greg	1.17	stderr_v("cannot allocate colors\n");
164			else
165			new_ctab(ncolors);
166	greg	1.24
167			XMapWindow(gwind); /* make sure it's mapped */
168	greg	1.17	XSync(1); /* discard input */
169	greg	1.1	return;
170			}
171
172
173			static
174			x_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */
175			COLOR col;
176			int xmin, ymin, xmax, ymax;
177			{
178	greg	1.14	extern int xnewcolr(); /* pixel assignment routine */
179	greg	1.1
180			if (ncolors > 0) {
181			XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
182	greg	1.14	pixval[get_pixel(col, xnewcolr)]);
183	greg	1.1	}
184	greg	1.25	}
185
186
187			static
188			x_flush() /* flush output */
189			{
190			if (ncolors <= 0) /* output necessary for death */
191			XPixSet(gwind,0,0,1,1,BlackPixel);
192			while (XPending() > 0)
193			getevent();
194
195	greg	1.1	}
196
197
198			static
199	greg	1.23	x_comin(inp, prompt) /* read in a command line */
200			char inp, prompt;
201	greg	1.1	{
202	greg	1.28	extern int x_getc();
203	greg	1.1
204	greg	1.23	if (prompt != NULL)
205			if (fromcombuf(inp, &x_driver))
206			return;
207			else
208			xt_puts(prompt, comline);
209	greg	1.1	xt_cursor(comline, TBLKCURS);
210	greg	1.11	editline(inp, x_getc, x_comout);
211	greg	1.1	xt_cursor(comline, TNOCURS);
212			}
213
214
215			static
216			x_comout(out) /* output a string to command line */
217			char *out;
218			{
219	greg	1.27	if (comline == NULL)
220			return;
221			xt_puts(out, comline);
222			if (out[strlen(out)-1] == '\n')
223			XFlush();
224	greg	1.1	}
225
226
227			static
228			x_errout(msg) /* output an error message */
229			char *msg;
230			{
231	greg	1.27	stderr_v(msg); /* send to stderr also! */
232	greg	1.1	x_comout(msg);
233			}
234
235
236			static int
237			x_getcur(xp, yp) /* get cursor position */
238			int xp, yp;
239			{
240			while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0)
241			sleep(1);
242			XFocusKeyboard(gwind);
243			do
244			getevent();
245			while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed);
246			*xp = levptr(XKeyOrButtonEvent)->x;
247			*yp = gheight-1 - levptr(XKeyOrButtonEvent)->y;
248			XFocusKeyboard(RootWindow);
249			XUngrabMouse();
250	greg	1.8	XFlush(); /* insure release */
251	greg	1.1	if (c_last > c_first) /* key pressed */
252			return(x_getc());
253			/* button pressed */
254			switch (levptr(XKeyOrButtonEvent)->detail & 0377) {
255			case LeftButton:
256			return(MB1);
257			case MiddleButton:
258			return(MB2);
259			case RightButton:
260			return(MB3);
261			}
262			return(ABORT);
263			}
264
265
266			static
267	greg	1.13	xnewcolr(ndx, r, g, b) /* enter a color into hardware table */
268	greg	1.1	int ndx;
269	greg	1.13	int r, g, b;
270	greg	1.1	{
271			Color xcolor;
272
273			xcolor.pixel = pixval[ndx];
274	greg	1.13	xcolor.red = r << 8;
275			xcolor.green = g << 8;
276			xcolor.blue = b << 8;
277	greg	1.1
278			XStoreColor(&xcolor);
279			}
280
281
282	greg	1.17	static int
283	greg	1.12	getpixels() /* get the color map */
284	greg	1.1	{
285			int planes;
286
287	greg	1.22	if (ncolors > 0)
288			return(ncolors);
289	greg	1.1	for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){
290			pixval = (int )malloc(ncolorssizeof(int));
291	greg	1.12	if (pixval == NULL)
292			break;
293	greg	1.1	if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0)
294	greg	1.17	return(ncolors);
295	greg	1.1	free((char *)pixval);
296			}
297	greg	1.17	return(ncolors = 0);
298	greg	1.1	}
299
300
301			static
302	greg	1.12	freepixels() /* free our pixels */
303	greg	1.1	{
304			if (ncolors == 0)
305			return;
306			XFreeColors(pixval, ncolors, 0);
307			free((char *)pixval);
308			ncolors = 0;
309			}
310
311
312			static int
313			x_getc() /* get a command character */
314			{
315			while (c_last <= c_first) {
316			c_first = c_last = 0; /* reset */
317			getevent(); /* wait for key */
318			}
319			x_driver.inpready--;
320			return(c_queue[c_first++]);
321			}
322
323
324			static
325			getevent() /* get next event */
326			{
327			XNextEvent(levptr(XEvent));
328			switch (levptr(XEvent)->type) {
329			case KeyPressed:
330			getkey(levptr(XKeyPressedEvent));
331			break;
332			case ExposeWindow:
333	greg	1.18	windowchange(levptr(XExposeEvent));
334			break;
335	greg	1.1	case ExposeRegion:
336			fixwindow(levptr(XExposeEvent));
337			break;
338			case UnmapWindow:
339			if (levptr(XUnmapEvent)->subwindow == 0)
340	greg	1.12	freepixels();
341	greg	1.1	break;
342			case ButtonPressed: /* handled in x_getcur() */
343			break;
344			}
345			}
346
347
348			static
349	greg	1.18	windowchange(eexp) /* process window change event */
350			register XExposeEvent *eexp;
351			{
352			if (eexp->subwindow != 0) {
353			fixwindow(eexp);
354			return;
355			}
356			/* check for change in size */
357	greg	1.19	if (eexp->width != gwidth \|\| eexp->height-COMHEIGHT != gheight) {
358	greg	1.24	gwidth = eexp->width;
359			gheight = eexp->height-COMHEIGHT;
360			x_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
361			x_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
362	greg	1.18	strcpy(getcombuf(&x_driver), "new\n");
363			return;
364			}
365			/* remap colors */
366	greg	1.22	if (getpixels() == 0) {
367	greg	1.18	stderr_v("cannot allocate colors\n");
368			return;
369			}
370			new_ctab(ncolors);
371			/* redraw */
372			fixwindow(eexp);
373			}
374
375
376			static
377	greg	1.1	getkey(ekey) /* get input key */
378			register XKeyPressedEvent *ekey;
379			{
380			int n;
381			register char *str;
382
383			str = XLookupMapping(ekey, &n);
384	greg	1.20	while (n-- > 0 && c_last < sizeof(c_queue)) {
385	greg	1.1	c_queue[c_last++] = *str++;
386	greg	1.20	x_driver.inpready++;
387			}
388	greg	1.1	}
389
390
391			static
392			fixwindow(eexp) /* repair damage to window */
393			register XExposeEvent *eexp;
394			{
395			if (eexp->subwindow == 0)
396	greg	1.18	sprintf(getcombuf(&x_driver), "repaint %d %d %d %d\n",
397			eexp->x, gheight - eexp->y - eexp->height,
398	greg	1.1	eexp->x + eexp->width, gheight - eexp->y);
399			else if (eexp->subwindow == comline->w)
400			xt_redraw(comline);
401			}