Improve event handling and mouse cursor changing.

Track.C

@@ -191,12 +191,30 @@ int
 Track::handle ( int m )
 {
     static Track_Widget *pushed;
+    static Track_Widget *belowmouse;
 
     switch ( m )
     {
+        case FL_ENTER:
+        case FL_LEAVE:
+            return 1;
         case FL_MOVE:
+        {
             /* these aren't used, so don't bother doing lookups for them */
+            Track_Widget *r = event_widget();
+
+            if ( r != belowmouse )
+            {
+                if ( belowmouse )
+                    belowmouse->handle( FL_LEAVE );
+                belowmouse = r;
+
+                if ( r )
+                    r->handle( FL_ENTER );
+            }
+
             return 1;
+        }
         default:
         {
             Track_Widget *r = pushed ? pushed : event_widget();
@@ -216,9 +234,19 @@ Track::handle ( int m )
                 while ( _delete_queue.size() )
                 {
 
-                    delete _delete_queue.front();
+                    Track_Widget *t = _delete_queue.front();
                     _delete_queue.pop();
-                    pushed = NULL;
+
+
+                    if ( pushed == t )
+                        pushed = NULL;
+                    if ( belowmouse == t )
+                    {
+                        belowmouse->handle( FL_LEAVE );
+                        belowmouse = NULL;
+                    }
+
+                    delete t;
                 }
 
                 Loggable::block_end();

Track_Widget.C

@@ -107,9 +107,6 @@ Track_Widget::dispatch ( int m )
 int
 Track_Widget::handle ( int m )
 {
-/*     static int ox, oy; */
-/*     static bool dragging = false; */
-
     int X = Fl::event_x();
     int Y = Fl::event_y();
 
@@ -146,7 +143,7 @@ Track_Widget::handle ( int m )
                 _drag = NULL;
             }
 
-            fl_cursor( FL_CURSOR_DEFAULT );
+            fl_cursor( FL_CURSOR_HAND );
             return 1;
         case FL_DRAG:
         {