another GUI approach, this time more generic.

avr/modules/lcd2/gui2/TODO

@@ -0,0 +1,46 @@
+
+Object:
+- next
+- parent
+- firstChild
+- options (2 bytes)
+- signal handling
+  - targetAddr   (like in FOX)
+  - selector
+  - handlerMap:
+    - selector/signal (00: end), handlerAddr
+Widgets:
+- x          (2 bytes)
+- y          (2 bytes)
+- width      (2 bytes)
+- height     (2 bytes)
+- font       (2 bytes)
+- frontColor (2 bytes)
+- backColor  (2 bytes)
+
+Labels:
+- text
+
+
+Signals:
+- CREATE
+- DESTROY
+- SHOW
+- HIDE
+- DRAW
+- TIMER
+- TOUCH
+[- KEY]
+- USER  = 16
+
+
+
+OBJ:
+- SDRAM pointer hierher verschieben
+- speichere dort:
+  - FLAGS_LO, FLAGS_HI  (2 bytes)
+  - NEXT, PARENT, CHILD (6 bytes)
+
+- OBJ_AddNeighbour()
+- OBJ_AddChild()
+- OBJ_Unlink()