Windows: Pass EventStatus::Ignored keyboard events to parent

Author: AlexCharlton

src/win/window.rs

@@ -13,15 +13,16 @@ use windows_sys::Win32::{
         },
         WindowsAndMessaging::{
             AdjustWindowRectEx, CreateWindowExW, DefWindowProcW, DestroyWindow, DispatchMessageW,
-            GetMessageW, GetWindowLongPtrW, LoadCursorW, PostMessageW, SetCursor, SetTimer,
-            SetWindowLongPtrW, SetWindowPos, TranslateMessage, GWLP_USERDATA, HTCLIENT, MSG,
-            SWP_NOACTIVATE, SWP_NOMOVE, SWP_NOZORDER, WHEEL_DELTA, WM_CHAR, WM_CLOSE, WM_CREATE,
-            WM_DPICHANGED, WM_INPUTLANGCHANGE, WM_KEYDOWN, WM_KEYUP, WM_KILLFOCUS, WM_LBUTTONDOWN,
-            WM_LBUTTONUP, WM_MBUTTONDOWN, WM_MBUTTONUP, WM_MOUSEHWHEEL, WM_MOUSEMOVE,
-            WM_MOUSEWHEEL, WM_NCDESTROY, WM_RBUTTONDOWN, WM_RBUTTONUP, WM_SETCURSOR, WM_SETFOCUS,
-            WM_SHOWWINDOW, WM_SIZE, WM_SYSCHAR, WM_SYSKEYDOWN, WM_SYSKEYUP, WM_TIMER, WM_USER,
-            WM_XBUTTONDOWN, WM_XBUTTONUP, WS_CAPTION, WS_CHILD, WS_CLIPSIBLINGS, WS_MAXIMIZEBOX,
-            WS_MINIMIZEBOX, WS_POPUPWINDOW, WS_SIZEBOX, WS_VISIBLE,
+            GetMessageW, GetParent, GetWindowLongPtrW, LoadCursorW, PostMessageW, SendMessageW,
+            SetCursor, SetTimer, SetWindowLongPtrW, SetWindowPos, TranslateMessage, GWLP_USERDATA,
+            HTCLIENT, MSG, SWP_NOACTIVATE, SWP_NOMOVE, SWP_NOZORDER, WHEEL_DELTA, WM_CHAR,
+            WM_CLOSE, WM_CREATE, WM_DPICHANGED, WM_INPUTLANGCHANGE, WM_KEYDOWN, WM_KEYUP,
+            WM_KILLFOCUS, WM_LBUTTONDOWN, WM_LBUTTONUP, WM_MBUTTONDOWN, WM_MBUTTONUP,
+            WM_MOUSEHWHEEL, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_NCDESTROY, WM_RBUTTONDOWN,
+            WM_RBUTTONUP, WM_SETCURSOR, WM_SETFOCUS, WM_SHOWWINDOW, WM_SIZE, WM_SYSCHAR,
+            WM_SYSKEYDOWN, WM_SYSKEYUP, WM_TIMER, WM_USER, WM_XBUTTONDOWN, WM_XBUTTONUP,
+            WS_CAPTION, WS_CHILD, WS_CLIPSIBLINGS, WS_MAXIMIZEBOX, WS_MINIMIZEBOX, WS_POPUPWINDOW,
+            WS_SIZEBOX, WS_VISIBLE,
         },
     },
 };
@@ -45,8 +46,8 @@ const BV_WINDOW_MUST_CLOSE: u32 = WM_USER + 1;
 
 use crate::win::hook::{self, KeyboardHookHandle};
 use crate::{
-    Event, MouseButton, MouseCursor, MouseEvent, PhyPoint, PhySize, ScrollDelta, Size, WindowEvent,
-    WindowHandler, WindowInfo, WindowOpenOptions, WindowScalePolicy,
+    Event, EventStatus, MouseButton, MouseCursor, MouseEvent, PhyPoint, PhySize, ScrollDelta, Size,
+    WindowEvent, WindowHandler, WindowInfo, WindowOpenOptions, WindowScalePolicy,
 };
 
 use super::cursor::cursor_to_lpcwstr;
@@ -352,13 +353,24 @@ unsafe fn wnd_proc_inner(
             let opt_event =
                 window_state.keyboard_state.borrow_mut().process_message(hwnd, msg, wparam, lparam);
 
-            if let Some(event) = opt_event {
+            let status = if let Some(event) = opt_event {
                 window_state
                     .handler
                     .borrow_mut()
                     .as_mut()
                     .unwrap()
-                    .on_event(&mut window, Event::Keyboard(event));
+                    .on_event(&mut window, Event::Keyboard(event))
+            } else {
+                EventStatus::Ignored
+            };
+
+            if status == EventStatus::Ignored {
+                let parent = GetParent(hwnd);
+                if !parent.is_null() {
+                    SendMessageW(parent, msg, wparam, lparam);
+                    return Some(0);
+                }
+                return None;
             }
 
             if msg != WM_SYSKEYDOWN {