Index: reactos/base/shell/explorer/traywnd.cpp
===================================================================
--- reactos/base/shell/explorer/traywnd.cpp	(revision 74436)
+++ reactos/base/shell/explorer/traywnd.cpp	(working copy)
@@ -550,8 +550,28 @@
         case IDHK_PREV_TASK:
             break;
         case IDHK_MINIMIZE_ALL:
+            {
+                HWND hwndTop = ::GetTopWindow(NULL);
+                while (hwndTop)
+                {
+                    if (::IsWindowVisible(hwndTop))
+                        ::ShowWindowAsync(hwndTop, SW_MINIMIZE);
+
+                    hwndTop = ::GetWindow(hwndTop, GW_HWNDNEXT);
+                }
+            }
             break;
         case IDHK_RESTORE_ALL:
+            {
+                HWND hwndTop = ::GetTopWindow(NULL);
+                while (hwndTop)
+                {
+                    if (::IsWindowVisible(hwndTop) && ::IsIconic(hwndTop))
+                        ::ShowWindowAsync(hwndTop, SW_RESTORE);
+
+                    hwndTop = ::GetWindow(hwndTop, GW_HWNDNEXT);
+                }
+            }
             break;
         case IDHK_DESKTOP:
             break;