--- a/config.arg.h	Fri Oct 27 13:29:35 2006 +0200
+++ b/config.arg.h	Mon Oct 30 11:58:05 2006 +0100
@@ -19,6 +19,7 @@
 
 #define MASTER			600 /* per thousand */
 #define MODKEY			Mod1Mask
+#define SNAP			20 /* pixel */
 
 #define KEYS \
 static Key key[] = { \

--- a/config.default.h	Fri Oct 27 13:29:35 2006 +0200
+++ b/config.default.h	Mon Oct 30 11:58:05 2006 +0100
@@ -19,6 +19,7 @@
 
 #define MASTER			600 /* per thousand */
 #define MODKEY			Mod1Mask
+#define SNAP			20 /* pixel */
 
 #define KEYS \
 static Key key[] = { \

--- a/event.c	Fri Oct 27 13:29:35 2006 +0200
+++ b/event.c	Mon Oct 30 11:58:05 2006 +0100
@@ -48,6 +48,14 @@
 			XSync(dpy, False);
 			c->x = ocx + (ev.xmotion.x - x1);
 			c->y = ocy + (ev.xmotion.y - y1);
+			if(abs(c->x) < sx + SNAP)
+				c->x = sx;
+			if(abs(c->y) < sy + bh + SNAP)
+				c->y = sy + bh;
+			if(abs(c->x + c->w) > sx + sw - SNAP)
+				c->x = sw - c->w - 2 * BORDERPX;
+			if(abs(c->y + c->h) > sy + sh - SNAP)
+				c->y = sh - c->h - 2 * BORDERPX;
 			resize(c, False, TopLeft);
 			break;
 		}