diff --git a/gfx/event.lua b/gfx/event.lua
index ab093db..66c25ae 100644
--- a/gfx/event.lua
+++ b/gfx/event.lua
@@ -4,6 +4,10 @@ function Event.isClickEvent(evt)
   return evt[1] == "monitor_touch" or evt[1] == "mouse_click"
 end
 
+function Event.isKeyEvent(evt, key)
+  return evt[1] == "key" and (key == nil or evt[2] == key) 
+end
+
 function Event.getClickParams(evt)
     return evt[3], evt[4], evt[2]
 end