Applied patch from dec 10th. It does not solve the problem that the About dialog drops behind the Sudoku window though...

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6964 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/Fl_cocoa.mm

@@ -659,6 +659,19 @@ static double do_queued_events( double time = 0.0 )
       }
     } 
   }
+  //necessary so that after closing a non-FLTK window (e.g., Fl_Native_File_Chooser)
+  //the front window turns key again
+  if([NSApp keyWindow] == nil) {
+    Fl_Window *w = Fl::first_window();
+    if (w) {
+      NSWindow *cw = (NSWindow*)Fl_X::i(w)->xid;
+      if([cw isVisible] && ![cw isMiniaturized] && ([cw styleMask] & NSTitledWindowMask) ) {
+        if(![cw isKeyWindow]) {//always make Fl::first_window() the key window
+          [cw makeKeyWindow];
+        }
+      } 
+    }
+  }
   NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask 
                                       untilDate:[NSDate dateWithTimeIntervalSinceNow:time] 
                                          inMode:NSDefaultRunLoopMode dequeue:YES];