Index: new/java/src/com/tigervnc/vncviewer/VncViewer.java
===================================================================
--- new.orig/java/src/com/tigervnc/vncviewer/VncViewer.java	2011-01-25 07:44:23.000000000 +0100
+++ new/java/src/com/tigervnc/vncviewer/VncViewer.java	2011-01-28 13:26:16.000000000 +0100
@@ -466,6 +466,38 @@
     }
   }
 
+  public void sendRefreshRequest()
+  {
+    if (rfb == null)
+      return;
+
+    try {
+      rfb.writeFramebufferUpdateRequest(0, 0, rfb.framebufferWidth,
+					rfb.framebufferHeight, false);
+    } catch (IOException e) {
+      e.printStackTrace();
+    }
+  }
+
+  public void sendCtrlAltDel()
+  {
+    if (rfb == null)
+      return;
+
+    int modifiers = InputEvent.CTRL_MASK | InputEvent.ALT_MASK;
+
+    try {
+      KeyEvent ctrlAltDelEvent =
+	new KeyEvent(this, KeyEvent.KEY_PRESSED, 0, modifiers, 127);
+      rfb.writeKeyEvent(ctrlAltDelEvent);
+
+      ctrlAltDelEvent =
+	new KeyEvent(this, KeyEvent.KEY_RELEASED, 0, modifiers, 127);
+      rfb.writeKeyEvent(ctrlAltDelEvent);
+    } catch (IOException e) {
+      e.printStackTrace();
+    }
+  }
 
   //
   // Show an authentication panel.