Permit removal of Track_Widgets.

Audio_Track.H

@@ -21,6 +21,8 @@
 
 #include "Track.H"
 
+#include <FL/Fl_Input.H>
+
 class Audio_Track : public Track
 {
 
@@ -28,6 +30,11 @@ public:
 
     Audio_Track ( int X, int Y, int W, int H ) : Track( X, Y, W, H )
         {
+
+/*             Fl_Group *o = new Fl_Group( 0, 0, 100, H ); */
+/*             new Fl_Input( 0, 0, 100, 24, "name:" ); */
+/*             o->end(); */
+
         }
 
     /** event handler that supports DND of audio clips */

Region.H

@@ -204,6 +204,13 @@ public:
                     ox = x() - X;
                     oy = y() - Y;
 
+                    if ( Fl::event_state() & FL_CTRL &&
+                         Fl::event_button() == 3 )
+                    {
+                        _track->queue_delete( this );
+                        return 0;
+                    }
+
                     return 1;
                 }
                 case FL_RELEASE:

Track.C

@@ -25,6 +25,8 @@
 #include <FL/fl_draw.H>
 
 
+Track_Widget * Track::_queued_widget = NULL;
+
 static bool
 sort_func ( Track_Widget *lhs, Track_Widget *rhs )
 {
@@ -163,6 +165,15 @@ Track::handle ( int m )
                 if ( retval && m == FL_RELEASE )
                     current_widget = NULL;
 
+                if ( _queued_widget )
+                {
+                    remove( _queued_widget );
+                    delete _queued_widget;
+                    _queued_widget = NULL;
+                    current_widget = NULL;
+                    redraw();
+                }
+
                 return retval;
             }
             else

Track.H

@@ -40,6 +40,8 @@ class Track : public Fl_Group
     Track *_prev;
     char *_name;
 
+    static Track_Widget * _queued_widget;
+
 protected:
 
     list <Track_Widget *> _widgets;
@@ -67,6 +69,13 @@ public:
     void remove ( Track_Widget *r );
     void add ( Track_Widget *r );
 
+    void queue_delete ( Track_Widget *r )
+        {
+            assert( ! _queued_widget );
+
+            _queued_widget = r;
+        }
+
     virtual void snap ( Track_Widget *r );
     virtual int handle ( int m );