--- a/android/DWindows.kt	Thu May 13 20:46:07 2021 +0000
+++ b/android/DWindows.kt	Thu May 13 22:03:48 2021 +0000
@@ -437,6 +437,8 @@
                         group += 1
                     } else if(menuitem.menuitem == null) {
                         menuitem.menuitem = menu?.add(group, menuitem.id, 0, menuitem.title)
+                        menuitem.menuitem!!.isCheckable = menuitem.check
+                        menuitem.menuitem!!.isChecked = menuitem.checked
                         menuitem.menuitem!!.setOnMenuItemClickListener(MenuItem.OnMenuItemClickListener { item: MenuItem? ->
                             eventHandlerSimple(menuitem, 8)
                             true
@@ -564,6 +566,50 @@
         return menuitem
     }
 
+    fun menuDestroy(menu: DWMenu)
+    {
+        menu.children.clear()
+        runOnUiThread {
+            menu.menu!!.clear()
+            invalidateOptionsMenu()
+        }
+    }
+
+    fun menuDeleteItem(menu: DWMenu, cid: Int)
+    {
+        for(menuitem in menu.children) {
+            if(menuitem.id == cid) {
+                menu.children.remove(menuitem)
+                runOnUiThread {
+                    menu.menu!!.removeItem(menuitem.id)
+                    invalidateOptionsMenu()
+                }
+            }
+        }
+    }
+
+    fun menuSetState(menu: DWMenu, cid: Int, state: Int)
+    {
+        for(menuitem in menu.children) {
+            if(menuitem.id == cid) {
+                // Handle DW_MIS_CHECKED/UNCHECKED
+                if((state and ((1 shl 2) or (1 shl 3))) != 0) {
+                    var checked: Boolean = false
+
+                    // Handle DW_MIS_CHECKED
+                    if ((state and (1 shl 2)) != 0) {
+                        checked = true
+                    }
+                    menuitem.checked = checked
+                    runOnUiThread {
+                        menuitem.menuitem!!.isChecked = checked
+                        invalidateOptionsMenu()
+                    }
+                }
+            }
+        }
+    }
+
     /*
      * These are the Android calls to actually create the UI...
      * forwarded from the C Dynamic Windows API

--- a/android/dw.cpp	Thu May 13 20:46:07 2021 +0000
+++ b/android/dw.cpp	Thu May 13 22:03:48 2021 +0000
@@ -3966,6 +3966,19 @@
  */
 void API dw_menu_destroy(HMENUI *menu)
 {
+    JNIEnv *env;
+
+    if(menu && *menu && (env = (JNIEnv *)pthread_getspecific(_dw_env_key)))
+    {
+        // First get the class that contains the method you need to call
+        jclass clazz = _dw_find_class(env, DW_CLASS_NAME);
+        // Get the method that you want to call
+        jmethodID menuDestroy = env->GetMethodID(clazz, "menuDestroy",
+                                                 "(Lorg/dbsoft/dwindows/DWMenu;)V");
+        // Call the method on the object
+        env->CallVoidMethod(_dw_obj, menuDestroy, *menu);
+        *menu = nullptr;
+    }
 }
 
 /*
@@ -3978,6 +3991,19 @@
  */
 int API dw_menu_delete_item(HMENUI menux, unsigned long id)
 {
+    JNIEnv *env;
+
+    if(menux && id > 0 && id < 30000 && (env = (JNIEnv *)pthread_getspecific(_dw_env_key)))
+    {
+        // First get the class that contains the method you need to call
+        jclass clazz = _dw_find_class(env, DW_CLASS_NAME);
+        // Get the method that you want to call
+        jmethodID menuDeleteItem = env->GetMethodID(clazz, "menuDeleteItem",
+                                                    "(Lorg/dbsoft/dwindows/DWMenu;I)V");
+        // Call the method on the object
+        env->CallVoidMethod(_dw_obj, menuDeleteItem, menux, (int)id);
+        return DW_ERROR_NONE;
+    }
     return DW_ERROR_UNKNOWN;
 }
 
@@ -4059,6 +4085,7 @@
  */
 void API dw_menu_item_set_check(HMENUI menux, unsigned long itemid, int check)
 {
+    dw_menu_item_set_state(menux, itemid, check ? DW_MIS_CHECKED : DW_MIS_UNCHECKED);
 }
 
 /*
@@ -4071,6 +4098,18 @@
  */
 void API dw_menu_item_set_state(HMENUI menux, unsigned long itemid, unsigned long state)
 {
+    JNIEnv *env;
+
+    if(menux && itemid > 0 && itemid < 30000 && state && (env = (JNIEnv *)pthread_getspecific(_dw_env_key)))
+    {
+        // First get the class that contains the method you need to call
+        jclass clazz = _dw_find_class(env, DW_CLASS_NAME);
+        // Get the method that you want to call
+        jmethodID menuSetState = env->GetMethodID(clazz, "menuSetState",
+                                                  "(Lorg/dbsoft/dwindows/DWMenu;II)V");
+        // Call the method on the object
+        env->CallVoidMethod(_dw_obj, menuSetState, menux, (int)itemid, (int)state);
+    }
 }
 
 /*