diff -u xfwm4-4.6.2/src//client.c xfwm4-4.6.2-modified/src//client.c
--- xfwm4-4.6.2/src//client.c	2010-05-21 20:02:40.000000000 +0300
+++ xfwm4-4.6.2-modified/src//client.c	2010-08-19 16:57:41.902412889 +0300
@@ -3180,7 +3180,7 @@
     wc->height = c->old_height;
 }
 
-static void
+void
 clientNewMaxSize (Client * c, XWindowChanges *wc)
 {
     ScreenInfo *screen_info;
@@ -3207,7 +3207,7 @@
     full_h = MIN (screen_info->height - screen_info->params->xfwm_margins[STRUTS_BOTTOM],
                   rect.y + rect.height) - full_y;
 
-    if (FLAG_TEST_ALL (c->flags, CLIENT_FLAG_MAXIMIZED))
+    if (FLAG_TEST_ALL (c->flags, CLIENT_FLAG_MAXIMIZED) || FLAG_TEST (c->flags, CLIENT_FLAG_TILED))
     {
         /* Adjust size to the largest size available, not covering struts */
         clientMaxSpace (screen_info, &full_x, &full_y, &full_w, &full_h);
diff -u xfwm4-4.6.2/src//client.h xfwm4-4.6.2-modified/src//client.h
--- xfwm4-4.6.2/src//client.h	2010-05-21 20:02:40.000000000 +0300
+++ xfwm4-4.6.2-modified/src//client.h	2010-08-19 17:00:25.636144949 +0300
@@ -160,6 +160,8 @@
 #define CLIENT_FLAG_HAS_SHAPE           (1L<<18)
 #define CLIENT_FLAG_FULLSCREN_MONITORS  (1L<<19)
 
+#define CLIENT_FLAG_TILED               (1L<<20)
+
 #define WM_FLAG_DELETE                  (1L<<0)
 #define WM_FLAG_INPUT                   (1L<<1)
 #define WM_FLAG_TAKEFOCUS               (1L<<2)
@@ -336,6 +338,9 @@
 extern Client *clients;
 extern unsigned int client_count;
 
+void                     clientNewMaxSize                       (Client * c,
+                                                                 XWindowChanges *wc);
+
 Display                 *clientGetXDisplay                      (Client *);
 void                     clientClearLastOpTime                  (Client *);
 void                     clientUpdateWinState                   (Client *,
Только в xfwm4-4.6.2-modified/src/: .deps
Только в xfwm4-4.6.2-modified/src/: .libs
Только в xfwm4-4.6.2-modified/src/: Makefile
diff -u xfwm4-4.6.2/src//moveresize.c xfwm4-4.6.2-modified/src//moveresize.c
--- xfwm4-4.6.2/src//moveresize.c	2010-05-21 20:02:40.000000000 +0300
+++ xfwm4-4.6.2-modified/src//moveresize.c	2010-08-19 19:16:56.916391699 +0300
@@ -35,7 +35,8 @@
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #include <gtk/gtk.h>
-#
+
+#include "moveresize.h"
 #include "client.h"
 #include "focus.h"
 #include "frame.h"
@@ -809,6 +810,92 @@
         c->x = passdata->ox + (xevent->xmotion.x_root - passdata->mx);
         c->y = passdata->oy + (xevent->xmotion.y_root - passdata->my);
 
+        if (!FLAG_TEST_ALL(c->flags, CLIENT_FLAG_MAXIMIZED))
+        {
+            if (xevent->xmotion.x_root < TILING_EDGE
+                || xevent->xmotion.x_root > screen_info->width - TILING_EDGE
+                || xevent->xmotion.y_root < TILING_EDGE
+                || xevent->xmotion.y_root > screen_info->height - TILING_EDGE)
+            {
+                XWindowChanges wc;
+                wc.x = c->x;
+                wc.y = c->y;
+                wc.width = c->width;
+                wc.height = c->height;
+
+                if (c->old_width == -1)
+                    c->old_width = c->width;
+                if (c->old_height == -1)
+                    c->old_height = c->height;
+
+                FLAG_SET (c->flags, CLIENT_FLAG_TILED);
+                clientNewMaxSize(c, &wc);
+
+                if (xevent->xmotion.x_root < TILING_EDGE)
+                {
+                    c->x = wc.x;
+                    c->y = wc.y;
+                    c->width = (wc.width - frameRight(c) - frameLeft(c))/2;
+                    c->height = wc.height;
+                }
+                else if (xevent->xmotion.x_root > screen_info->width - TILING_EDGE)
+                {
+                    c->width = (wc.width - frameRight(c) - frameLeft(c))/2;
+                    c->height = wc.height;
+                    c->x = wc.x + c->width + frameRight(c) + frameLeft(c);
+                    c->y = wc.y;
+                }
+                else if (xevent->xmotion.y_root < TILING_EDGE)
+                {
+                    c->x = wc.x;
+                    c->y = wc.y;
+                    c->width = wc.width;
+                    c->height = (wc.height - frameBottom(c) - frameTop(c))/2;
+                }
+                else
+                {
+                    c->width = wc.width;
+                    c->height = (wc.height - frameBottom(c) - frameTop(c))/2;
+                    c->x = wc.x;
+                    c->y = wc.y + c->height + frameBottom(c) + frameTop(c);
+                }
+            }
+            else
+            {
+                if (c->old_width != -1)
+                {
+                    c->width = c->old_width;
+                    c->old_width = -1;
+
+                    int tmp_x = xevent->xbutton.x_root;
+                    if (tmp_x < c->x || tmp_x > c->x + c->width)
+                        tmp_x = c->x + c->width/2;
+
+                    passdata->mx = tmp_x;
+                    passdata->ox = c->x;
+                }
+
+                if (c->old_height != -1)
+                {
+                    c->height = c->old_height;
+                    c->old_height = -1;
+
+                    int tmp_y = xevent->xbutton.y_root;
+                    if (tmp_y < c->y || tmp_y > c->y + c->height)
+                        tmp_y = c->y + c->height/2;
+
+                    passdata->my = tmp_y;
+                    passdata->oy = c->y;
+
+
+                }
+
+                FLAG_UNSET (c->flags, CLIENT_FLAG_TILED);
+
+            }
+            passdata->move_resized = 1;
+        }
+
         clientSnapPosition (c, prev_x, prev_y);
         if (screen_info->params->restore_on_move)
         {
@@ -1123,6 +1210,11 @@
     status = EVENT_FILTER_STOP;
     resizing = TRUE;
 
+    if (xevent->xmotion.x_root > TILING_EDGE || xevent->xmotion.x_root < screen_info->width - TILING_EDGE)
+    {
+        /* c->old_x = c->old_y =*/ c->old_width = c->old_height = -1;
+    }
+
     frame_x = frameX (c);
     frame_y = frameY (c);
     frame_height = frameHeight (c);
diff -u xfwm4-4.6.2/src//moveresize.h xfwm4-4.6.2-modified/src//moveresize.h
--- xfwm4-4.6.2/src//moveresize.h	2010-05-21 20:02:40.000000000 +0300
+++ xfwm4-4.6.2-modified/src//moveresize.h	2010-08-19 19:20:49.531552317 +0300
@@ -31,8 +31,11 @@
 #include "screen.h"
 #include "client.h"
 
+#define TILING_EDGE 10
+
 #ifndef INC_MOVERESIZE_H
 #define INC_MOVERESIZE_H
+
 void                     clientSetWidth                         (Client *,
                                                                  int);
 void                     clientSetHeight                        (Client *,
diff -u xfwm4-4.6.2/src//placement.c xfwm4-4.6.2-modified/src//placement.c
--- xfwm4-4.6.2/src//placement.c	2010-05-21 20:02:40.000000000 +0300
+++ xfwm4-4.6.2-modified/src//placement.c	2010-08-19 17:08:20.463672751 +0300
@@ -740,6 +740,8 @@
     {
         clientAutoMaximize (c, full_w, full_h);
     }
+    c->old_width = -1;
+    c->old_height = -1;
 }