diff --git a/include/AppCore.hpp b/include/AppCore.hpp
index 9804517..177194c 100644
--- a/include/AppCore.hpp
+++ b/include/AppCore.hpp
@@ -5,7 +5,7 @@
 //  James Turk (jpt2433@rit.edu)
 //
 // Version:
-//  $Id: AppCore.hpp,v 1.2 2005/03/01 07:51:04 cozman Exp $
+//  $Id: AppCore.hpp,v 1.3 2005/03/02 08:40:51 cozman Exp $
 
 #ifndef PHOTON_APPCORE_HPP
 #define PHOTON_APPCORE_HPP
@@ -67,10 +67,6 @@ public:
                         uint depthBits, uint stencilBits, bool fullscreen,
                         const std::string &title);
 
-    // Function: updateDisplay
-    //  Updates the display, usually involves flipping the front/back buffers.
-    void updateDisplay();
-
 // Group: Input
 public:
 
@@ -127,10 +123,10 @@ public:
     //  been running.
     scalar getTime();
     
-// Group: Application 
+// Group: General 
 public:
     // Function: update
-    //  Updates the  
+    //  Updates the internals of the application, including the display.
     void update();
 
     // Function: setTitle
@@ -175,8 +171,26 @@ public:
     //  Current frames per second.
     double getFramerate();
 
+// Group: Accessors    
+public:
+    // Function: getDisplayWidth
+    //  Get the width of the display.
+    //
+    // Returns:
+    //  Width of display in pixels.
+    uint getDisplayWidth();
+    
+    // Function: getDisplayHeight
+    //  Get the height of the display.
+    //
+    // Returns:
+    //  Height of display in pixels.
+    uint getDisplayHeight();
+
 // data members
 private:
+    uint dispWidth_;
+    uint dispHeight_;
     bool quitRequested_;
     bool active_;
     bool timerPaused_;
diff --git a/include/Application.hpp b/include/Application.hpp
index e10f2c3..ced9c9f 100644
--- a/include/Application.hpp
+++ b/include/Application.hpp
@@ -5,7 +5,7 @@
 //  James Turk (jpt2433@rit.edu)
 //
 // Version:
-//  $Id: Application.hpp,v 1.5 2005/03/01 07:51:04 cozman Exp $
+//  $Id: Application.hpp,v 1.6 2005/03/02 08:40:51 cozman Exp $
 
 #ifndef PHOTON_APPLICATION_HPP
 #define PHOTON_APPLICATION_HPP
@@ -76,12 +76,6 @@ private:
 
 // Data Members
 private:
-    scalar secPerFrame_;
-    scalar lastUpdate_;
-    bool active_;
-    bool unpauseOnActive_;
-    bool quitRequested_;
-
     // version number for photon
     util::VersionInfo photonVer_;
 
diff --git a/src/AppCore.cpp b/src/AppCore.cpp
index 02c4e7a..e2db4b3 100644
--- a/src/AppCore.cpp
+++ b/src/AppCore.cpp
@@ -5,7 +5,7 @@
 //  James Turk (jpt2433@rit.edu)
 //
 // Version:
-//  $Id: AppCore.cpp,v 1.2 2005/03/01 07:52:20 cozman Exp $
+//  $Id: AppCore.cpp,v 1.3 2005/03/02 08:43:33 cozman Exp $
 
 #include "AppCore.hpp"
 
@@ -30,6 +30,9 @@ void AppCore::createDisplay(uint width, uint height,
         throw APIError("Failed to create display.");
     }
     
+    dispWidth_ = width;
+    dispHeight_ = height;
+    
     glfwSetWindowTitle(title.c_str());  // title is set separately
 }
 
@@ -56,14 +59,12 @@ void AppCore::createDisplay(uint width, uint height, uint bpp,
             createDisplay(width, height, 8, 8, 8, 8, depthBits, stencilBits, 
                             fullscreen, title);
             break;
+        default:
+            throw ArgumentException("bpp argument of createDisplay must be " 
+                                    "8,16,24, or 32.");
     }
 }
 
-void AppCore::updateDisplay()
-{
-    glfwSwapBuffers();
-}
-
 bool AppCore::keyPressed(KeyCode key)
 {
     return glfwGetKey(key) == GLFW_PRESS;
@@ -102,6 +103,9 @@ void AppCore::update()
 {
     scalar curTime = getTime();
     
+    // update the display here instead of VideoCore (since it belongs to glfw)
+    glfwSwapBuffers();  
+    
     // keep track of time between frames
     secPerFrame_ = curTime-lastUpdate_;
     lastUpdate_ = curTime;
@@ -162,6 +166,16 @@ double AppCore::getFramerate()
     return 1/secPerFrame_;
 }
 
+uint AppCore::getDisplayWidth()
+{
+    return dispWidth_;
+}
+
+uint AppCore::getDisplayHeight()
+{
+    return dispHeight_;
+}
+
 util::VersionInfo AppCore::initGLFW()
 {
     int maj,min,patch;
@@ -174,6 +188,7 @@ util::VersionInfo AppCore::initGLFW()
 }
 
 AppCore::AppCore() :
+    dispWidth_(0), dispHeight_(0),
     quitRequested_(true), active_(false), timerPaused_(false), 
     unpauseOnActive_(false), lastPause_(0), pausedTime_(0),
     secPerFrame_(0), lastUpdate_(0)