--- ray/src/rt/msmouse.c	1992/10/16 13:09:23	2.3
+++ ray/src/rt/msmouse.c	1993/07/16 18:41:09	2.5
@@ -8,6 +8,8 @@ static char SCCSid[] = "$SunId$ LBL";
 #include <graph.h>
 #include "driver.h"
 
+#define  NULL		0
+
 #define	 M_RIGHTBUTT	0x8
 #define	 M_LEFTBUTT	0x2
 #define	 M_MOTION	0x1
@@ -175,3 +177,21 @@ struct driver  *dp;
 
     dp->getcur = ms_getcur;
 }
+
+void
+ms_gcdone( dp )
+struct driver  *dp;
+{
+    union REGS inregs, outregs;
+
+    if (dp->getcur != ms_getcur)
+	return;			/* not installed */
+
+    dp->getcur = NULL;
+
+    /* uninstall watcher */
+
+    inregs.w.ax = 0;
+    int386 (0x33, &inregs, &outregs);
+}
+