42 #define NOREDRAW ((REDRAW *)-1)  macro
57 static REDRAW   *us_redrawfree = NOREDRAW;	/* free list of re-draw modules */
58 static REDRAW   *us_firstredraw = NOREDRAW;	/* first in list of active re-draw modules */
59 static REDRAW   *us_firstopaque = NOREDRAW;	/* first in list of active opaque re-draws */
60 static REDRAW   *us_firstexport = NOREDRAW;	/* first in list of export re-draws */
61 static REDRAW   *us_lastopaque = NOREDRAW;	/* last in list of active opaque re-draws */
62 static REDRAW   *us_usedredraw = NOREDRAW;	/* first in list of used re-draw modules */
130 	while (us_redrawfree != NOREDRAW)  in us_freewindowmemory()
461 	for(r = us_firstredraw; r != NOREDRAW; r = nextr)  in us_endchanges()
531 	us_firstredraw = NOREDRAW;  in us_endchanges()
534 	for(r = us_firstopaque; r != NOREDRAW; r = nextr)  in us_endchanges()
601 	us_firstopaque = NOREDRAW;  in us_endchanges()
602 	us_lastopaque = NOREDRAW;  in us_endchanges()
605 	for(r = us_usedredraw; r != NOREDRAW; r = nextr)  in us_endchanges()
619 	us_usedredraw = NOREDRAW;  in us_endchanges()
622 	for(r = us_firstexport; r != NOREDRAW; r = nextr)  in us_endchanges()
649 	us_firstexport = NOREDRAW;  in us_endchanges()
779 	if (r == NOREDRAW)  in us_queueredraw()
799 	lastr = NOREDRAW;  in us_unqueueredraw()
800 	for(r = us_firstredraw; r != NOREDRAW; r = nextr)  in us_unqueueredraw()
807 			if (lastr == NOREDRAW) us_firstredraw = nextr; else  in us_unqueueredraw()
864 	if (r == NOREDRAW)  in us_queueexport()
926 	if (r == NOREDRAW)  in us_queueopaque()
938 		if (us_lastopaque == NOREDRAW) us_lastopaque = r;  in us_queueopaque()
942 		if (us_lastopaque != NOREDRAW) us_lastopaque->nextredraw = r;  in us_queueopaque()
943 		r->nextredraw = NOREDRAW;  in us_queueopaque()
945 		if (us_firstopaque == NOREDRAW) us_firstopaque = r;  in us_queueopaque()
957 	if (us_redrawfree == NOREDRAW)  in us_allocredraw()
960 		if (r == 0) return(NOREDRAW);  in us_allocredraw()