--- old/src/windows/native/sun/windows/awt_Frame.h	2013-02-15 13:38:02.000000000 +0400
+++ new/src/windows/native/sun/windows/awt_Frame.h	2013-02-15 13:38:02.000000000 +0400
@@ -72,6 +72,8 @@
 
     /* Returns whether this frame is embedded in an external native frame. */
     INLINE BOOL IsEmbeddedFrame() { return m_isEmbedded; }
+    /* Returns whether this frame is lightweight. */
+    INLINE virtual BOOL IsLightweightFrame() { return m_isLightweight; }
 
     INLINE BOOL IsSimpleWindow() { return FALSE; }
 
@@ -169,6 +171,9 @@
     /* The frame is an EmbeddedFrame. */
     BOOL m_isEmbedded;
 
+    /* The frame is a LightweightFrame */
+    BOOL m_isLightweight;
+
     /* used so that calls to ::MoveWindow in SetMenuBar don't propogate
        because they are immediately followed by calls to Component.resize */
     BOOL m_ignoreWmSize;