gui: add routine to destroy objects outside event loop.

avr/modules/lcd2/gui/base/guiapp.asm

@@ -356,9 +356,10 @@ GuiApp_OnDestroy:
 ; @clobbers any, !Y
 
 GuiApp_OnTimer:
-  rcall guiAppCheckTouch          ; (any, !Y)
-  rcall guiAppSendTimerEvents     ; (any, !Y)
-  rcall guiAppCheckSendGuiEvents  ; (any, !Y)
+  rcall guiAppCheckTouch                ; (any, !Y)
+  rcall guiAppSendTimerEvents           ; (any, !Y)
+  rcall guiAppCheckSendGuiEvents        ; (any, !Y)
+  rcall guiAppHandlePendingDestructions ; (any, !Y)
   sec
   ret
 ; @end
@@ -619,6 +620,7 @@ guiAppCheckSendGuiEvents:
       pop yl  
       ldi r16, GUIAPP_GUITIMER
       std Y+GUIAPP_OFFS_GUITIMER, r16
+      
 guiAppCheckSendGuiEvents_done:
     pop yh
   pop yl  
@@ -627,6 +629,30 @@ guiAppCheckSendGuiEvents_done:
 
 
 
+; ---------------------------------------------------------------------------
+; @routine guiAppHandlePendingDestructions
+;
+; Send GUI events to current window if timer elapsed.
+;
+; @param Y ptr to GUIAPP
+; @clobbers any, !Y
+
+guiAppHandlePendingDestructions:
+  push yl
+    push yh
+      rcall GuiApp_GetRootWindow
+      brcc guiAppHandlePendingDestructions_done
+      mov yl, r18
+      mov yh, r19
+      bigcall OBJ_TreeDestroyMarked
+guiAppHandlePendingDestructions_done:
+    pop yh
+  pop yl
+  ret
+; @end
+
+
+
 ; ---------------------------------------------------------------------------
 ; @routine guiAppSendTouchEvents
 ;