diff --git a/docs/example_wasm.js b/docs/example_wasm.js
index c6b91057..9a7e5076 100644
--- a/docs/example_wasm.js
+++ b/docs/example_wasm.js
@@ -207,12 +207,12 @@ function makeMutClosure(arg0, arg1, dtor, f) {
     real.original = state;
     return real;
 }
-function __wbg_adapter_26(arg0, arg1, arg2) {
-    wasm._dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__h22fd33d9f501a695(arg0, arg1, addHeapObject(arg2));
+function __wbg_adapter_26(arg0, arg1) {
+    wasm._dyn_core__ops__function__FnMut_____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__h84da5f062b972f09(arg0, arg1);
 }
 
-function __wbg_adapter_29(arg0, arg1) {
-    wasm._dyn_core__ops__function__FnMut_____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__h84da5f062b972f09(arg0, arg1);
+function __wbg_adapter_29(arg0, arg1, arg2) {
+    wasm._dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__h22fd33d9f501a695(arg0, arg1, addHeapObject(arg2));
 }
 
 function __wbg_adapter_32(arg0, arg1, arg2) {
@@ -725,28 +725,28 @@ async function init(input) {
         var ret = wasm.memory;
         return addHeapObject(ret);
     };
-    imports.wbg.__wbindgen_closure_wrapper387 = function(arg0, arg1, arg2) {
-        var ret = makeMutClosure(arg0, arg1, 74, __wbg_adapter_26);
-        return addHeapObject(ret);
-    };
-    imports.wbg.__wbindgen_closure_wrapper383 = function(arg0, arg1, arg2) {
-        var ret = makeMutClosure(arg0, arg1, 74, __wbg_adapter_32);
-        return addHeapObject(ret);
-    };
-    imports.wbg.__wbindgen_closure_wrapper380 = function(arg0, arg1, arg2) {
-        var ret = makeMutClosure(arg0, arg1, 74, __wbg_adapter_38);
+    imports.wbg.__wbindgen_closure_wrapper381 = function(arg0, arg1, arg2) {
+        var ret = makeMutClosure(arg0, arg1, 76, __wbg_adapter_35);
         return addHeapObject(ret);
     };
     imports.wbg.__wbindgen_closure_wrapper385 = function(arg0, arg1, arg2) {
-        var ret = makeMutClosure(arg0, arg1, 74, __wbg_adapter_29);
+        var ret = makeMutClosure(arg0, arg1, 76, __wbg_adapter_38);
+        return addHeapObject(ret);
+    };
+    imports.wbg.__wbindgen_closure_wrapper382 = function(arg0, arg1, arg2) {
+        var ret = makeMutClosure(arg0, arg1, 76, __wbg_adapter_41);
+        return addHeapObject(ret);
+    };
+    imports.wbg.__wbindgen_closure_wrapper387 = function(arg0, arg1, arg2) {
+        var ret = makeMutClosure(arg0, arg1, 76, __wbg_adapter_26);
         return addHeapObject(ret);
     };
     imports.wbg.__wbindgen_closure_wrapper389 = function(arg0, arg1, arg2) {
-        var ret = makeMutClosure(arg0, arg1, 74, __wbg_adapter_41);
+        var ret = makeMutClosure(arg0, arg1, 76, __wbg_adapter_29);
         return addHeapObject(ret);
     };
-    imports.wbg.__wbindgen_closure_wrapper379 = function(arg0, arg1, arg2) {
-        var ret = makeMutClosure(arg0, arg1, 74, __wbg_adapter_35);
+    imports.wbg.__wbindgen_closure_wrapper391 = function(arg0, arg1, arg2) {
+        var ret = makeMutClosure(arg0, arg1, 76, __wbg_adapter_32);
         return addHeapObject(ret);
     };
 
diff --git a/docs/example_wasm_bg.wasm b/docs/example_wasm_bg.wasm
index 35961b2a..9b3082a9 100644
Binary files a/docs/example_wasm_bg.wasm and b/docs/example_wasm_bg.wasm differ
diff --git a/egui/src/context.rs b/egui/src/context.rs
index 8b82748f..889fe66d 100644
--- a/egui/src/context.rs
+++ b/egui/src/context.rs
@@ -293,7 +293,11 @@ impl Context {
     /// If false, the mouse is outside of any Egui area and so
     /// you may be interested in what it is doing (e.g. controlling your game).
     pub fn wants_mouse_input(&self) -> bool {
-        self.is_mouse_over_area() || self.memory().interaction.is_using_mouse()
+        self.is_mouse_over_area() || self.is_using_mouse()
+    }
+
+    pub fn is_using_mouse(&self) -> bool {
+        self.memory().interaction.is_using_mouse()
     }
 
     /// If true, Egui is currently listening on text input (e.g. typing text in a `TextEdit`).
diff --git a/egui_web/src/lib.rs b/egui_web/src/lib.rs
index da2e8f29..1d2dc962 100644
--- a/egui_web/src/lib.rs
+++ b/egui_web/src/lib.rs
@@ -69,6 +69,7 @@ impl Backend {
         self.painter.canvas_id()
     }
 
+    /// Returns a master fullscreen UI, covering the entire screen.
     pub fn begin_frame(&mut self, raw_input: egui::RawInput) -> egui::Ui {
         self.frame_start = Some(now_sec());
         self.ctx.begin_frame(raw_input)
@@ -436,7 +437,8 @@ fn paint_and_schedule(runner_ref: AppRunnerRef) -> Result<(), JsValue> {
 
 fn install_document_events(runner_ref: &AppRunnerRef) -> Result<(), JsValue> {
     use wasm_bindgen::JsCast;
-    let document = web_sys::window().unwrap().document().unwrap();
+    let window = web_sys::window().unwrap();
+    let document = window.document().unwrap();
 
     {
         // keydown
@@ -481,7 +483,7 @@ fn install_document_events(runner_ref: &AppRunnerRef) -> Result<(), JsValue> {
         let closure = Closure::wrap(Box::new(move || {
             runner_ref.0.lock().needs_repaint = true;
         }) as Box<dyn FnMut()>);
-        document.add_event_listener_with_callback(event_name, closure.as_ref().unchecked_ref())?;
+        window.add_event_listener_with_callback(event_name, closure.as_ref().unchecked_ref())?;
         closure.forget();
     }