Index: src/org/openide/explorer/view/TreeViewDropSupport.java
===================================================================
RCS file: /cvs/openide/src/org/openide/explorer/view/TreeViewDropSupport.java,v
retrieving revision 1.34
diff -u -r1.34 TreeViewDropSupport.java
--- src/org/openide/explorer/view/TreeViewDropSupport.java	27 Feb 2003 23:40:41 -0000	1.34
+++ src/org/openide/explorer/view/TreeViewDropSupport.java	12 Oct 2003 20:28:26 -0000
@@ -97,7 +97,21 @@
     
     /** User is starting to drag over us */
     public void dragEnter (DropTargetDragEvent dtde) {
-
+        checkStoredGlassPane ();
+        // set a status and cursor of dnd action
+        doDragOver (dtde);
+    }
+    
+    /** User drags over us */
+    public void dragOver (DropTargetDragEvent dtde) {
+        // bugfix #34483; w2k could calls dragOver() before dragEnter()
+        // this check make dragOver/Enter more robust
+        checkStoredGlassPane ();
+        // set a status and cursor of dnd action
+        doDragOver (dtde);
+    }
+    
+    private void checkStoredGlassPane () {
         // remember current glass pane to set back at end of dragging over this compoment
         if (!DropGlassPane.isOriginalPaneStored ()) {
             Component comp = tree.getRootPane ().getGlassPane ();
@@ -110,14 +124,6 @@
             dropPane.revalidate();
             dropPane.setVisible (true);
         }
-        // set a status and cursor of dnd action
-        doDragOver (dtde);
-    }
-    
-    /** User drags over us */
-    public void dragOver (DropTargetDragEvent dtde) {
-        // set a status and cursor of dnd action
-        doDragOver (dtde);
     }
 
     /** Process events dragEnter or dragOver. */