Index: reactos/base/shell/explorer/traywnd.cpp
===================================================================
--- reactos/base/shell/explorer/traywnd.cpp	(revision 74436)
+++ reactos/base/shell/explorer/traywnd.cpp	(working copy)
@@ -520,6 +520,112 @@
         return TRUE;
     }
 
+#define MAX_WINDOWS     64
+
+    void MinimizeAll()
+    {
+        INT nCount = 0;
+        HWND ahwnd[MAX_WINDOWS], hwndTop = ::GetTopWindow(NULL);
+        while (hwndTop)
+        {
+            if (m_hWnd != hwndTop && m_DesktopWnd != hwndTop &&
+                ::IsWindowVisible(hwndTop) &&
+                !::IsIconic(hwndTop) &&
+                ::GetWindow(hwndTop, GW_OWNER) == NULL)
+            {
+                ahwnd[nCount++] = hwndTop;
+                if (nCount >= MAX_WINDOWS)
+                    break;
+            }
+            hwndTop = ::GetWindow(hwndTop, GW_HWNDNEXT);
+        }
+        for (INT i = 0; i < nCount; ++i)
+        {
+            ::PostMessage(ahwnd[i], WM_SYSCOMMAND, SC_MINIMIZE, 0);
+        }
+    }
+
+    void RestoreAll()
+    {
+        INT nCount = 0;
+        HWND ahwnd[MAX_WINDOWS], hwndTop = ::GetTopWindow(NULL);
+        while (hwndTop)
+        {
+            if (m_hWnd != hwndTop && m_DesktopWnd != hwndTop &&
+                ::IsWindowVisible(hwndTop) && ::IsIconic(hwndTop) &&
+                ::GetWindow(hwndTop, GW_OWNER) == NULL)
+            {
+                ahwnd[nCount++] = hwndTop;
+                if (nCount >= MAX_WINDOWS)
+                    break;
+            }
+            hwndTop = ::GetWindow(hwndTop, GW_HWNDNEXT);
+        }
+        for (INT i = 0; i < nCount; ++i)
+        {
+            ::PostMessage(ahwnd[i], WM_SYSCOMMAND, SC_RESTORE, 0);
+        }
+    }
+
+    void WinDesktop()
+    {
+        // FIXME: Use DeferWindowPos
+        BOOL HasNonIconic = FALSE;
+        HWND ahwnd[MAX_WINDOWS], hwndTop = ::GetTopWindow(NULL);
+        INT nCount = 0;
+        while (hwndTop)
+        {
+            if (m_hWnd != hwndTop && m_DesktopWnd != hwndTop &&
+                ::IsWindowVisible(hwndTop) && !::IsIconic(hwndTop))
+            {
+                HasNonIconic = TRUE;
+                break;
+            }
+            hwndTop = ::GetWindow(hwndTop, GW_HWNDNEXT);
+        }
+        if (HasNonIconic)
+        {
+            /* show desktop */
+            hwndTop = ::GetTopWindow(NULL);
+            while (hwndTop)
+            {
+                if (m_hWnd != hwndTop && m_DesktopWnd != hwndTop &&
+                    ::IsWindowVisible(hwndTop) && !::IsIconic(hwndTop))
+                {
+                    ahwnd[nCount++] = hwndTop;
+                    if (nCount >= MAX_WINDOWS)
+                        break;
+                }
+                hwndTop = ::GetWindow(hwndTop, GW_HWNDNEXT);
+            }
+            for (INT i = 0; i < nCount; ++i)
+            {
+                ::ShowWindow(ahwnd[i], SW_MINIMIZE);
+            }
+            ::SetFocus(m_DesktopWnd);
+        }
+        else
+        {
+            /* restore all minimized windows */
+            hwndTop = ::GetTopWindow(NULL);
+            while (hwndTop)
+            {
+                if (m_hWnd != hwndTop && m_DesktopWnd != hwndTop &&
+                    ::IsWindowVisible(hwndTop) && ::IsIconic(hwndTop))
+                {
+                    ahwnd[nCount++] = hwndTop;
+                    if (nCount >= MAX_WINDOWS)
+                        break;
+                }
+                hwndTop = ::GetWindow(hwndTop, GW_HWNDNEXT);
+            }
+            for (INT i = 0; i < nCount; ++i)
+            {
+                ::ShowWindow(ahwnd[i], SW_RESTORE);
+            }
+        }
+    }
+
     LRESULT HandleHotKey(DWORD id)
     {
         switch (id)
@@ -550,10 +656,13 @@
         case IDHK_PREV_TASK:
             break;
         case IDHK_MINIMIZE_ALL:
+            MinimizeAll();
             break;
         case IDHK_RESTORE_ALL:
+            RestoreAll();
             break;
         case IDHK_DESKTOP:
+            WinDesktop();
             break;
         case IDHK_PAGER:
             break;