diff -up dwm-6.0/dwm.c dwm-6.0-resizecorners/dwm.c
--- dwm-6.0/dwm.c	2011-12-19 15:02:46.000000000 +0000
+++ dwm-6.0-resizecorners/dwm.c	2015-05-12 23:31:10.803508011 +0000
@@ -1364,20 +1364,35 @@ resizeclient(Client *c, int x, int y, in
 void
 resizemouse(const Arg *arg) {
 	int ocx, ocy;
+	int ocx2, ocy2;
+	int nx, ny;
 	int nw, nh;
 	Client *c;
 	Monitor *m;
 	XEvent ev;
+	int horizcorner, vertcorner;
+	int di;
+	unsigned int dui;
+	Window dummy;
 
 	if(!(c = selmon->sel))
 		return;
 	restack(selmon);
 	ocx = c->x;
 	ocy = c->y;
+	ocx2 = c->x + c->w;
+	ocy2 = c->y + c->h;
 	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
 	                None, cursor[CurResize], CurrentTime) != GrabSuccess)
 		return;
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+	if (!XQueryPointer (dpy, c->win, &dummy, &dummy, &di, &di, &nx, &ny, &dui))
+		return;
+	horizcorner = nx < c->w / 2;
+	vertcorner = ny < c->h / 2;
+	XWarpPointer (dpy, None, c->win, 0, 0, 0, 0,
+		      horizcorner ? (-c->bw) : (c->w + c->bw - 1),
+		      vertcorner ? (-c->bw) : (c->h + c->bw - 1));
+
 	do {
 		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
 		switch(ev.type) {
@@ -1387,8 +1402,10 @@ resizemouse(const Arg *arg) {
 			handler[ev.type](&ev);
 			break;
 		case MotionNotify:
-			nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
-			nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
+			nx = horizcorner ? ev.xmotion.x : c->x;
+			ny = vertcorner ? ev.xmotion.y : c->y;
+			nw = MAX(horizcorner ? (ocx2 - nx) : (ev.xmotion.x - ocx - 2 * c->bw + 1), 1);
+			nh = MAX(vertcorner ? (ocy2 - ny) : (ev.xmotion.y - ocy - 2 * c->bw + 1), 1);
 			if(c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
 			&& c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
 			{
@@ -1397,11 +1414,13 @@ resizemouse(const Arg *arg) {
 					togglefloating(NULL);
 			}
 			if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
-				resize(c, c->x, c->y, nw, nh, True);
+				resize(c, nx, ny, nw, nh, True);
 			break;
 		}
 	} while(ev.type != ButtonRelease);
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+	XWarpPointer (dpy, None, c->win, 0, 0, 0, 0,
+		      horizcorner ? (-c->bw) : (c->w + c->bw - 1),
+		      vertcorner ? (-c->bw) : (c->h + c->bw - 1));
 	XUngrabPointer(dpy, CurrentTime);
 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 	if((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {