--- a/src/viewer_swing/java/com/glavsoft/viewer/Viewer.java	Sat Jan 17 04:58:03 2015 +0900
+++ b/src/viewer_swing/java/com/glavsoft/viewer/Viewer.java	Sun Jan 18 08:36:06 2015 +0900
@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.Socket;
+import java.util.ArrayList;
 import java.util.jar.Attributes;
 import java.util.jar.Manifest;
 import java.util.logging.*;
@@ -397,6 +398,12 @@
         isApplet = true;
         settings.setViewOnly(true); // too avoid unnecessary upward traffic
         rfb.setReconnecting(true);
+
+        ArrayList<Rectangle> rectangles = getScreenRectangles();
+        int leftScreenNumber = 0;
+        getRfb().singleWidth = (int) rectangles.get(leftScreenNumber).getWidth();
+        getRfb().singleHeight = (int) rectangles.get(leftScreenNumber).getHeight();
+
         run();
     }
 
@@ -441,4 +448,27 @@
         this.fixingSizeWidth = width;
         this.fixingSizeHeight = height;
     }
+
+    @Override
+    public ArrayList<Rectangle> getScreenRectangles() {
+        // before change server, data from previous server
+        // should be stopped.
+        setCuiVersion(false);
+        // Host have screens.
+        // Each screen number in order from left.
+        // put screens in rectangles.
+        ArrayList<Rectangle> rectangles = new ArrayList<Rectangle>();
+        GraphicsConfiguration[] gc = null;
+        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
+        GraphicsDevice[] gs = ge.getScreenDevices();
+        for (int j = 0; j < gs.length; j++) {
+            GraphicsDevice gd = gs[j];
+            gc = gd.getConfigurations();
+            for (int i=0; i < gc.length; i++) {
+                rectangles.add(gc[i].getBounds());
+            }
+        }
+        return rectangles;
+    }
+
 }