diff --git a/src/dlangui/core/events.d b/src/dlangui/core/events.d
index 4d394d91..f4970fdf 100644
--- a/src/dlangui/core/events.d
+++ b/src/dlangui/core/events.d
@@ -242,6 +242,7 @@ struct ActionState {
 const ACTION_STATE_ENABLED = ActionState(true, true, false);
 const ACTION_STATE_DISABLE = ActionState(false, true, false);
 const ACTION_STATE_INVISIBLE = ActionState(false, false, false);
+const ACTION_STATE_CHECKED = ActionState(true, true, true);
 
 /// Match key flags
 static bool matchKeyFlags(uint eventFlags, uint requestedFlags) {
diff --git a/src/dlangui/widgets/menu.d b/src/dlangui/widgets/menu.d
index bdd1b45d..d207a502 100644
--- a/src/dlangui/widgets/menu.d
+++ b/src/dlangui/widgets/menu.d
@@ -207,6 +207,13 @@ class MenuItem {
         subitem._parent = this;
         return this;
     }
+    /// adds submenu checkbox item
+    MenuItem addCheck(const Action a) {
+        MenuItem res = new MenuItem(a);
+        res.type = MenuItemType.Check;
+        add(res);
+        return this;
+    }
     /// adds submenu item(s) from one or more actions (will return item for last action)
     MenuItem add(Action[] subitemActions...) {
         MenuItem res = null;
diff --git a/views/DLANGUI_VERSION b/views/DLANGUI_VERSION
index 1389f0e1..e9ac3a9a 100644
--- a/views/DLANGUI_VERSION
+++ b/views/DLANGUI_VERSION
@@ -1 +1 @@
-v0.9.137
\ No newline at end of file
+v0.9.138
\ No newline at end of file