diff --git a/Cargo.toml b/Cargo.toml
index d340e5ba..1e8b7712 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -242,7 +242,7 @@ objc2-ui-kit = { version = "0.3.0", default-features = false, features = [
 # Windows
 [target.'cfg(target_os = "windows")'.dependencies]
 unicode-segmentation = "1.7.1"
-windows-sys = { version = "0.52.0", features = [
+windows-sys = { version = "0.59.0", features = [
     "Win32_Devices_HumanInterfaceDevice",
     "Win32_Foundation",
     "Win32_Globalization",
diff --git a/src/changelog/unreleased.md b/src/changelog/unreleased.md
index c42c2593..b94f73d7 100644
--- a/src/changelog/unreleased.md
+++ b/src/changelog/unreleased.md
@@ -182,6 +182,9 @@ changelog entry.
   whilst files are being dragged over the window. It doesn't contain any file paths, just the
   pointer position.
 - Updated `objc2` to `v0.6`.
+- Updated `windows-sys` to `v0.59`.
+  - To match the corresponding changes in `windows-sys`, the `HWND`, `HMONITOR`, and `HMENU` types
+    now alias to `*mut c_void` instead of `isize`.
 
 ### Removed
 
diff --git a/src/platform/windows.rs b/src/platform/windows.rs
index c0ab94f4..d93a05c2 100644
--- a/src/platform/windows.rs
+++ b/src/platform/windows.rs
@@ -19,11 +19,11 @@ use crate::monitor::MonitorHandle;
 use crate::window::{BadIcon, Icon, Window, WindowAttributes};
 
 /// Window Handle type used by Win32 API
-pub type HWND = isize;
+pub type HWND = *mut c_void;
 /// Menu Handle type used by Win32 API
-pub type HMENU = isize;
+pub type HMENU = *mut c_void;
 /// Monitor Handle type used by Win32 API
-pub type HMONITOR = isize;
+pub type HMONITOR = *mut c_void;
 
 /// Describes a system-drawn backdrop material of a window.
 ///
diff --git a/src/platform_impl/windows/dark_mode.rs b/src/platform_impl/windows/dark_mode.rs
index 46580c42..87bba6ed 100644
--- a/src/platform_impl/windows/dark_mode.rs
+++ b/src/platform_impl/windows/dark_mode.rs
@@ -133,7 +133,7 @@ fn should_apps_use_dark_mode() -> bool {
 
         let module = LoadLibraryA("uxtheme.dll\0".as_ptr());
 
-        if module == 0 {
+        if module.is_null() {
             return None;
         }
 
diff --git a/src/platform_impl/windows/definitions.rs b/src/platform_impl/windows/definitions.rs
index 62c0cb06..be22d60e 100644
--- a/src/platform_impl/windows/definitions.rs
+++ b/src/platform_impl/windows/definitions.rs
@@ -3,11 +3,15 @@
 
 use std::ffi::c_void;
 
-use windows_sys::core::{IUnknown, GUID, HRESULT};
+use windows_sys::core::{GUID, HRESULT};
 use windows_sys::Win32::Foundation::{BOOL, HWND, POINTL};
-use windows_sys::Win32::System::Com::{
-    IAdviseSink, IDataObject, IEnumFORMATETC, IEnumSTATDATA, FORMATETC, STGMEDIUM,
-};
+use windows_sys::Win32::System::Com::{FORMATETC, STGMEDIUM};
+
+pub type IUnknown = *mut c_void;
+pub type IAdviseSink = *mut c_void;
+pub type IDataObject = *mut c_void;
+pub type IEnumFORMATETC = *mut c_void;
+pub type IEnumSTATDATA = *mut c_void;
 
 #[repr(C)]
 pub struct IUnknownVtbl {
diff --git a/src/platform_impl/windows/dpi.rs b/src/platform_impl/windows/dpi.rs
index 5880069c..d016f94e 100644
--- a/src/platform_impl/windows/dpi.rs
+++ b/src/platform_impl/windows/dpi.rs
@@ -73,7 +73,7 @@ pub fn dpi_to_scale_factor(dpi: u32) -> f64 {
 
 pub unsafe fn hwnd_dpi(hwnd: HWND) -> u32 {
     let hdc = unsafe { GetDC(hwnd) };
-    if hdc == 0 {
+    if hdc.is_null() {
         panic!("[winit] `GetDC` returned null!");
     }
     if let Some(GetDpiForWindow) = *GET_DPI_FOR_WINDOW {
@@ -85,7 +85,7 @@ pub unsafe fn hwnd_dpi(hwnd: HWND) -> u32 {
     } else if let Some(GetDpiForMonitor) = *GET_DPI_FOR_MONITOR {
         // We are on Windows 8.1 or later.
         let monitor = unsafe { MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST) };
-        if monitor == 0 {
+        if monitor.is_null() {
             return BASE_DPI;
         }
 
diff --git a/src/platform_impl/windows/drop_handler.rs b/src/platform_impl/windows/drop_handler.rs
index 3f378f6e..94af20ec 100644
--- a/src/platform_impl/windows/drop_handler.rs
+++ b/src/platform_impl/windows/drop_handler.rs
@@ -5,17 +5,17 @@ use std::ptr;
 use std::sync::atomic::{AtomicUsize, Ordering};
 
 use tracing::debug;
-use windows_sys::core::{IUnknown, GUID, HRESULT};
+use windows_sys::core::{GUID, HRESULT};
 use windows_sys::Win32::Foundation::{DV_E_FORMATETC, HWND, POINT, POINTL, S_OK};
 use windows_sys::Win32::Graphics::Gdi::ScreenToClient;
-use windows_sys::Win32::System::Com::{IDataObject, DVASPECT_CONTENT, FORMATETC, TYMED_HGLOBAL};
+use windows_sys::Win32::System::Com::{DVASPECT_CONTENT, FORMATETC, TYMED_HGLOBAL};
 use windows_sys::Win32::System::Ole::{CF_HDROP, DROPEFFECT_COPY, DROPEFFECT_NONE};
 use windows_sys::Win32::UI::Shell::{DragFinish, DragQueryFileW, HDROP};
 
 use crate::dpi::PhysicalPosition;
 use crate::event::{Event, WindowEvent};
 use crate::platform_impl::platform::definitions::{
-    IDataObjectVtbl, IDropTarget, IDropTargetVtbl, IUnknownVtbl,
+    IDataObject, IDataObjectVtbl, IDropTarget, IDropTargetVtbl, IUnknown, IUnknownVtbl,
 };
 use crate::window::WindowId;
 
diff --git a/src/platform_impl/windows/event_loop.rs b/src/platform_impl/windows/event_loop.rs
index abbaeaa3..6e94e6aa 100644
--- a/src/platform_impl/windows/event_loop.rs
+++ b/src/platform_impl/windows/event_loop.rs
@@ -12,7 +12,6 @@ use std::time::{Duration, Instant};
 use std::{mem, panic, ptr};
 
 use runner::EventLoopRunner;
-use windows_sys::Win32::Devices::HumanInterfaceDevice::MOUSE_MOVE_RELATIVE;
 use windows_sys::Win32::Foundation::{
     GetLastError, FALSE, HANDLE, HWND, LPARAM, LRESULT, POINT, RECT, WAIT_FAILED, WPARAM,
 };
@@ -37,7 +36,9 @@ use windows_sys::Win32::UI::Input::Touch::{
     CloseTouchInputHandle, GetTouchInputInfo, TOUCHEVENTF_DOWN, TOUCHEVENTF_MOVE,
     TOUCHEVENTF_PRIMARY, TOUCHEVENTF_UP, TOUCHINPUT,
 };
-use windows_sys::Win32::UI::Input::{RAWINPUT, RIM_TYPEKEYBOARD, RIM_TYPEMOUSE};
+use windows_sys::Win32::UI::Input::{
+    MOUSE_MOVE_RELATIVE, RAWINPUT, RIM_TYPEKEYBOARD, RIM_TYPEMOUSE,
+};
 use windows_sys::Win32::UI::WindowsAndMessaging::{
     CreateWindowExW, DefWindowProcW, DestroyWindow, DispatchMessageW, GetClientRect, GetCursorPos,
     GetMenu, LoadCursorW, MsgWaitForMultipleObjectsEx, PeekMessageW, PostMessageW,
@@ -402,7 +403,7 @@ impl EventLoop {
 
         loop {
             unsafe {
-                if PeekMessageW(&mut msg, 0, 0, 0, PM_REMOVE) == false.into() {
+                if PeekMessageW(&mut msg, ptr::null_mut(), 0, 0, PM_REMOVE) == false.into() {
                     break;
                 }
 
@@ -634,10 +635,10 @@ fn create_high_resolution_timer() -> Option<OwnedHandle> {
         // CREATE_WAITABLE_TIMER_HIGH_RESOLUTION is supported only after
         // Win10 1803 but it is already default option for rustc
         // (std uses it to implement `std::thread::sleep`).
-        if handle == 0 {
+        if handle.is_null() {
             None
         } else {
-            Some(OwnedHandle::from_raw_handle(handle as *mut c_void))
+            Some(OwnedHandle::from_raw_handle(handle))
         }
     }
 }
@@ -807,6 +808,7 @@ pub struct EventLoopProxy {
 }
 
 unsafe impl Send for EventLoopProxy {}
+unsafe impl Sync for EventLoopProxy {}
 
 impl EventLoopProxyProvider for EventLoopProxy {
     fn wake_up(&self) {
@@ -894,12 +896,12 @@ fn create_event_target_window() -> HWND {
             cbClsExtra: 0,
             cbWndExtra: 0,
             hInstance: util::get_instance_handle(),
-            hIcon: 0,
-            hCursor: 0, // must be null in order for cursor state to work properly
-            hbrBackground: 0,
+            hIcon: ptr::null_mut(),
+            hCursor: ptr::null_mut(), // must be null in order for cursor state to work properly
+            hbrBackground: ptr::null_mut(),
             lpszMenuName: ptr::null(),
             lpszClassName: THREAD_EVENT_TARGET_WINDOW_CLASS.as_ptr(),
-            hIconSm: 0,
+            hIconSm: ptr::null_mut(),
         };
 
         RegisterClassExW(&class);
@@ -922,8 +924,8 @@ fn create_event_target_window() -> HWND {
             0,
             0,
             0,
-            0,
-            0,
+            ptr::null_mut(),
+            ptr::null_mut(),
             util::get_instance_handle(),
             ptr::null(),
         );
@@ -1245,7 +1247,7 @@ unsafe fn public_window_callback_inner(
             // after marking `WM_PAINT` as handled.
             result = ProcResult::Value(unsafe { DefWindowProcW(window, msg, wparam, lparam) });
             if std::mem::take(&mut userdata.window_state_lock().redraw_requested) {
-                unsafe { RedrawWindow(window, ptr::null(), 0, RDW_INTERNALPAINT) };
+                unsafe { RedrawWindow(window, ptr::null(), ptr::null_mut(), RDW_INTERNALPAINT) };
             }
         },
         WM_WINDOWPOSCHANGING => {
@@ -1294,7 +1296,7 @@ unsafe fn public_window_callback_inner(
                     let new_monitor = unsafe { MonitorFromRect(&new_rect, MONITOR_DEFAULTTONULL) };
                     match fullscreen {
                         Fullscreen::Borderless(ref mut fullscreen_monitor) => {
-                            if new_monitor != 0
+                            if !new_monitor.is_null()
                                 && fullscreen_monitor
                                     .as_ref()
                                     .map(|monitor| new_monitor != monitor.hmonitor())
@@ -1741,7 +1743,7 @@ unsafe fn public_window_callback_inner(
         },
 
         WM_KEYUP | WM_SYSKEYUP => {
-            if msg == WM_SYSKEYUP && unsafe { GetMenu(window) != 0 } {
+            if msg == WM_SYSKEYUP && unsafe { !GetMenu(window).is_null() } {
                 // let Windows handle event if the window has a native menu, a modal event loop
                 // is started here on Alt key up.
                 result = ProcResult::DefWindowProc(wparam);
@@ -1973,7 +1975,7 @@ unsafe fn public_window_callback_inner(
             // If it is the same as our window, then we're essentially retaining the capture. This
             // can happen if `SetCapture` is called on our window when it already has the mouse
             // capture.
-            if lparam != window {
+            if lparam != window as isize {
                 userdata.window_state_lock().mouse.capture_count = 0;
             }
             result = ProcResult::Value(0);
@@ -1986,7 +1988,7 @@ unsafe fn public_window_callback_inner(
 
             let pcount = super::loword(wparam as u32) as usize;
             let mut inputs = Vec::with_capacity(pcount);
-            let htouch = lparam;
+            let htouch = lparam as *mut _;
             if unsafe {
                 GetTouchInputInfo(
                     htouch,
@@ -2309,7 +2311,7 @@ unsafe fn public_window_callback_inner(
                 Some(selected_cursor) => {
                     let hcursor = match selected_cursor {
                         SelectedCursor::Named(cursor_icon) => unsafe {
-                            LoadCursorW(0, util::to_windows_cursor(cursor_icon))
+                            LoadCursorW(ptr::null_mut(), util::to_windows_cursor(cursor_icon))
                         },
                         SelectedCursor::Custom(cursor) => cursor.as_raw_handle(),
                     };
@@ -2541,7 +2543,7 @@ unsafe fn public_window_callback_inner(
             unsafe {
                 SetWindowPos(
                     window,
-                    0,
+                    ptr::null_mut(),
                     new_outer_rect.left,
                     new_outer_rect.top,
                     new_outer_rect.right - new_outer_rect.left,
@@ -2621,7 +2623,7 @@ unsafe extern "system" fn thread_event_target_callback(
     let userdata = unsafe { Box::from_raw(userdata_ptr) };
 
     if msg != WM_PAINT {
-        unsafe { RedrawWindow(window, ptr::null(), 0, RDW_INTERNALPAINT) };
+        unsafe { RedrawWindow(window, ptr::null(), ptr::null_mut(), RDW_INTERNALPAINT) };
     }
 
     let mut userdata_removed = false;
@@ -2685,7 +2687,7 @@ unsafe fn handle_raw_input(userdata: &ThreadMsgTargetData, data: RAWINPUT) {
     if data.header.dwType == RIM_TYPEMOUSE {
         let mouse = unsafe { data.data.mouse };
 
-        if util::has_flag(mouse.usFlags as u32, MOUSE_MOVE_RELATIVE) {
+        if util::has_flag(mouse.usFlags, MOUSE_MOVE_RELATIVE) {
             let x = mouse.lLastX as f64;
             let y = mouse.lLastY as f64;
 
diff --git a/src/platform_impl/windows/icon.rs b/src/platform_impl/windows/icon.rs
index b5f43a67..7e5ed29c 100644
--- a/src/platform_impl/windows/icon.rs
+++ b/src/platform_impl/windows/icon.rs
@@ -1,7 +1,7 @@
 use std::ffi::c_void;
 use std::path::Path;
 use std::sync::Arc;
-use std::{fmt, io, mem};
+use std::{fmt, io, mem, ptr};
 
 use cursor_icon::CursorIcon;
 use windows_sys::core::PCWSTR;
@@ -40,7 +40,7 @@ impl RgbaIcon {
         assert_eq!(and_mask.len(), pixel_count);
         let handle = unsafe {
             CreateIcon(
-                0,
+                ptr::null_mut(),
                 self.width as i32,
                 self.height as i32,
                 1,
@@ -49,7 +49,7 @@ impl RgbaIcon {
                 rgba.as_ptr(),
             )
         };
-        if handle != 0 {
+        if !handle.is_null() {
             Ok(WinIcon::from_handle(handle))
         } else {
             Err(BadIcon::OsError(io::Error::last_os_error()))
@@ -68,6 +68,9 @@ struct RaiiIcon {
     handle: HICON,
 }
 
+unsafe impl Send for RaiiIcon {}
+unsafe impl Sync for RaiiIcon {}
+
 #[derive(Clone, PartialEq, Eq, Hash)]
 pub struct WinIcon {
     inner: Arc<RaiiIcon>,
@@ -91,7 +94,7 @@ impl WinIcon {
 
         let handle = unsafe {
             LoadImageW(
-                0,
+                ptr::null_mut(),
                 wide_path.as_ptr(),
                 IMAGE_ICON,
                 width,
@@ -99,7 +102,7 @@ impl WinIcon {
                 LR_DEFAULTSIZE | LR_LOADFROMFILE,
             )
         };
-        if handle != 0 {
+        if !handle.is_null() {
             Ok(WinIcon::from_handle(handle as HICON))
         } else {
             Err(BadIcon::OsError(io::Error::last_os_error()))
@@ -122,7 +125,7 @@ impl WinIcon {
                 LR_DEFAULTSIZE,
             )
         };
-        if handle != 0 {
+        if !handle.is_null() {
             Ok(WinIcon::from_handle(handle as HICON))
         } else {
             Err(BadIcon::OsError(io::Error::last_os_error()))
@@ -136,7 +139,7 @@ impl WinIcon {
 
     pub fn set_for_window(&self, hwnd: HWND, icon_type: IconType) {
         unsafe {
-            SendMessageW(hwnd, WM_SETICON, icon_type as usize, self.as_raw_handle());
+            SendMessageW(hwnd, WM_SETICON, icon_type as usize, self.as_raw_handle() as isize);
         }
     }
 
@@ -187,13 +190,13 @@ impl WinCursor {
         let h = image.height as i32;
 
         unsafe {
-            let hdc_screen = GetDC(0);
-            if hdc_screen == 0 {
+            let hdc_screen = GetDC(ptr::null_mut());
+            if hdc_screen.is_null() {
                 return Err(os_error!(io::Error::last_os_error()).into());
             }
             let hbm_color = CreateCompatibleBitmap(hdc_screen, w, h);
-            ReleaseDC(0, hdc_screen);
-            if hbm_color == 0 {
+            ReleaseDC(ptr::null_mut(), hdc_screen);
+            if hbm_color.is_null() {
                 return Err(os_error!(io::Error::last_os_error()).into());
             }
             if SetBitmapBits(hbm_color, bgra.len() as u32, bgra.as_ptr() as *const c_void) == 0 {
@@ -204,7 +207,7 @@ impl WinCursor {
             // Mask created according to https://learn.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-createbitmap#parameters
             let mask_bits: Vec<u8> = vec![0xff; ((((w + 15) >> 4) << 1) * h) as usize];
             let hbm_mask = CreateBitmap(w, h, 1, 1, mask_bits.as_ptr() as *const _);
-            if hbm_mask == 0 {
+            if hbm_mask.is_null() {
                 DeleteObject(hbm_color);
                 return Err(os_error!(io::Error::last_os_error()).into());
             }
@@ -220,7 +223,7 @@ impl WinCursor {
             let handle = CreateIconIndirect(&icon_info as *const _);
             DeleteObject(hbm_color);
             DeleteObject(hbm_mask);
-            if handle == 0 {
+            if handle.is_null() {
                 return Err(os_error!(io::Error::last_os_error()).into());
             }
 
@@ -234,6 +237,9 @@ pub struct RaiiCursor {
     handle: HCURSOR,
 }
 
+unsafe impl Send for RaiiCursor {}
+unsafe impl Sync for RaiiCursor {}
+
 impl Drop for RaiiCursor {
     fn drop(&mut self) {
         unsafe { DestroyCursor(self.handle) };
diff --git a/src/platform_impl/windows/ime.rs b/src/platform_impl/windows/ime.rs
index 67614873..c68a9cd0 100644
--- a/src/platform_impl/windows/ime.rs
+++ b/src/platform_impl/windows/ime.rs
@@ -3,12 +3,11 @@ use std::os::windows::prelude::OsStringExt;
 use std::ptr::null_mut;
 
 use windows_sys::Win32::Foundation::{POINT, RECT};
-use windows_sys::Win32::Globalization::HIMC;
 use windows_sys::Win32::UI::Input::Ime::{
     ImmAssociateContextEx, ImmGetCompositionStringW, ImmGetContext, ImmReleaseContext,
     ImmSetCandidateWindow, ImmSetCompositionWindow, ATTR_TARGET_CONVERTED,
     ATTR_TARGET_NOTCONVERTED, CANDIDATEFORM, CFS_EXCLUDE, CFS_POINT, COMPOSITIONFORM, GCS_COMPATTR,
-    GCS_COMPSTR, GCS_CURSORPOS, GCS_RESULTSTR, IACE_CHILDREN, IACE_DEFAULT,
+    GCS_COMPSTR, GCS_CURSORPOS, GCS_RESULTSTR, HIMC, IACE_CHILDREN, IACE_DEFAULT,
 };
 use windows_sys::Win32::UI::WindowsAndMessaging::{GetSystemMetrics, SM_IMMENABLED};
 
@@ -138,9 +137,9 @@ impl ImeContext {
         }
 
         if allowed {
-            unsafe { ImmAssociateContextEx(hwnd, 0, IACE_DEFAULT) };
+            unsafe { ImmAssociateContextEx(hwnd, null_mut(), IACE_DEFAULT) };
         } else {
-            unsafe { ImmAssociateContextEx(hwnd, 0, IACE_CHILDREN) };
+            unsafe { ImmAssociateContextEx(hwnd, null_mut(), IACE_CHILDREN) };
         }
     }
 
diff --git a/src/platform_impl/windows/keyboard.rs b/src/platform_impl/windows/keyboard.rs
index d4e7cc34..6c8b09c6 100644
--- a/src/platform_impl/windows/keyboard.rs
+++ b/src/platform_impl/windows/keyboard.rs
@@ -12,7 +12,7 @@ use unicode_segmentation::UnicodeSegmentation;
 use windows_sys::Win32::Foundation::{HWND, LPARAM, WPARAM};
 use windows_sys::Win32::System::SystemServices::LANG_KOREAN;
 use windows_sys::Win32::UI::Input::KeyboardAndMouse::{
-    GetAsyncKeyState, GetKeyState, GetKeyboardLayout, GetKeyboardState, MapVirtualKeyExW,
+    GetAsyncKeyState, GetKeyState, GetKeyboardLayout, GetKeyboardState, MapVirtualKeyExW, HKL,
     MAPVK_VK_TO_VSC_EX, MAPVK_VSC_TO_VK_EX, VIRTUAL_KEY, VK_ABNT_C2, VK_ADD, VK_CAPITAL, VK_CLEAR,
     VK_CONTROL, VK_DECIMAL, VK_DELETE, VK_DIVIDE, VK_DOWN, VK_END, VK_F4, VK_HOME, VK_INSERT,
     VK_LCONTROL, VK_LEFT, VK_LMENU, VK_LSHIFT, VK_LWIN, VK_MENU, VK_MULTIPLY, VK_NEXT, VK_NUMLOCK,
@@ -20,7 +20,6 @@ use windows_sys::Win32::UI::Input::KeyboardAndMouse::{
     VK_NUMPAD8, VK_NUMPAD9, VK_PRIOR, VK_RCONTROL, VK_RETURN, VK_RIGHT, VK_RMENU, VK_RSHIFT,
     VK_RWIN, VK_SCROLL, VK_SHIFT, VK_SUBTRACT, VK_UP,
 };
-use windows_sys::Win32::UI::TextServices::HKL;
 use windows_sys::Win32::UI::WindowsAndMessaging::{
     PeekMessageW, MSG, PM_NOREMOVE, WM_CHAR, WM_DEADCHAR, WM_KEYDOWN, WM_KEYFIRST, WM_KEYLAST,
     WM_KEYUP, WM_KILLFOCUS, WM_SETFOCUS, WM_SYSCHAR, WM_SYSDEADCHAR, WM_SYSKEYDOWN, WM_SYSKEYUP,
diff --git a/src/platform_impl/windows/keyboard_layout.rs b/src/platform_impl/windows/keyboard_layout.rs
index a5188860..6c2fe114 100644
--- a/src/platform_impl/windows/keyboard_layout.rs
+++ b/src/platform_impl/windows/keyboard_layout.rs
@@ -7,18 +7,19 @@ use std::sync::Mutex;
 use smol_str::SmolStr;
 use windows_sys::Win32::System::SystemServices::{LANG_JAPANESE, LANG_KOREAN};
 use windows_sys::Win32::UI::Input::KeyboardAndMouse::{
-    GetKeyState, GetKeyboardLayout, MapVirtualKeyExW, ToUnicodeEx, MAPVK_VK_TO_VSC_EX, VIRTUAL_KEY,
-    VK_ACCEPT, VK_ADD, VK_APPS, VK_ATTN, VK_BACK, VK_BROWSER_BACK, VK_BROWSER_FAVORITES,
-    VK_BROWSER_FORWARD, VK_BROWSER_HOME, VK_BROWSER_REFRESH, VK_BROWSER_SEARCH, VK_BROWSER_STOP,
-    VK_CANCEL, VK_CAPITAL, VK_CLEAR, VK_CONTROL, VK_CONVERT, VK_CRSEL, VK_DECIMAL, VK_DELETE,
-    VK_DIVIDE, VK_DOWN, VK_END, VK_EREOF, VK_ESCAPE, VK_EXECUTE, VK_EXSEL, VK_F1, VK_F10, VK_F11,
-    VK_F12, VK_F13, VK_F14, VK_F15, VK_F16, VK_F17, VK_F18, VK_F19, VK_F2, VK_F20, VK_F21, VK_F22,
-    VK_F23, VK_F24, VK_F3, VK_F4, VK_F5, VK_F6, VK_F7, VK_F8, VK_F9, VK_FINAL, VK_GAMEPAD_A,
-    VK_GAMEPAD_B, VK_GAMEPAD_DPAD_DOWN, VK_GAMEPAD_DPAD_LEFT, VK_GAMEPAD_DPAD_RIGHT,
-    VK_GAMEPAD_DPAD_UP, VK_GAMEPAD_LEFT_SHOULDER, VK_GAMEPAD_LEFT_THUMBSTICK_BUTTON,
-    VK_GAMEPAD_LEFT_THUMBSTICK_DOWN, VK_GAMEPAD_LEFT_THUMBSTICK_LEFT,
-    VK_GAMEPAD_LEFT_THUMBSTICK_RIGHT, VK_GAMEPAD_LEFT_THUMBSTICK_UP, VK_GAMEPAD_LEFT_TRIGGER,
-    VK_GAMEPAD_MENU, VK_GAMEPAD_RIGHT_SHOULDER, VK_GAMEPAD_RIGHT_THUMBSTICK_BUTTON,
+    GetKeyState, GetKeyboardLayout, MapVirtualKeyExW, ToUnicodeEx, HKL, MAPVK_VK_TO_VSC_EX,
+    VIRTUAL_KEY, VK_ACCEPT, VK_ADD, VK_APPS, VK_ATTN, VK_BACK, VK_BROWSER_BACK,
+    VK_BROWSER_FAVORITES, VK_BROWSER_FORWARD, VK_BROWSER_HOME, VK_BROWSER_REFRESH,
+    VK_BROWSER_SEARCH, VK_BROWSER_STOP, VK_CANCEL, VK_CAPITAL, VK_CLEAR, VK_CONTROL, VK_CONVERT,
+    VK_CRSEL, VK_DECIMAL, VK_DELETE, VK_DIVIDE, VK_DOWN, VK_END, VK_EREOF, VK_ESCAPE, VK_EXECUTE,
+    VK_EXSEL, VK_F1, VK_F10, VK_F11, VK_F12, VK_F13, VK_F14, VK_F15, VK_F16, VK_F17, VK_F18,
+    VK_F19, VK_F2, VK_F20, VK_F21, VK_F22, VK_F23, VK_F24, VK_F3, VK_F4, VK_F5, VK_F6, VK_F7,
+    VK_F8, VK_F9, VK_FINAL, VK_GAMEPAD_A, VK_GAMEPAD_B, VK_GAMEPAD_DPAD_DOWN, VK_GAMEPAD_DPAD_LEFT,
+    VK_GAMEPAD_DPAD_RIGHT, VK_GAMEPAD_DPAD_UP, VK_GAMEPAD_LEFT_SHOULDER,
+    VK_GAMEPAD_LEFT_THUMBSTICK_BUTTON, VK_GAMEPAD_LEFT_THUMBSTICK_DOWN,
+    VK_GAMEPAD_LEFT_THUMBSTICK_LEFT, VK_GAMEPAD_LEFT_THUMBSTICK_RIGHT,
+    VK_GAMEPAD_LEFT_THUMBSTICK_UP, VK_GAMEPAD_LEFT_TRIGGER, VK_GAMEPAD_MENU,
+    VK_GAMEPAD_RIGHT_SHOULDER, VK_GAMEPAD_RIGHT_THUMBSTICK_BUTTON,
     VK_GAMEPAD_RIGHT_THUMBSTICK_DOWN, VK_GAMEPAD_RIGHT_THUMBSTICK_LEFT,
     VK_GAMEPAD_RIGHT_THUMBSTICK_RIGHT, VK_GAMEPAD_RIGHT_THUMBSTICK_UP, VK_GAMEPAD_RIGHT_TRIGGER,
     VK_GAMEPAD_VIEW, VK_GAMEPAD_X, VK_GAMEPAD_Y, VK_HANGUL, VK_HANJA, VK_HELP, VK_HOME, VK_ICO_00,
@@ -39,7 +40,6 @@ use windows_sys::Win32::UI::Input::KeyboardAndMouse::{
     VK_SCROLL, VK_SELECT, VK_SEPARATOR, VK_SHIFT, VK_SLEEP, VK_SNAPSHOT, VK_SPACE, VK_SUBTRACT,
     VK_TAB, VK_UP, VK_VOLUME_DOWN, VK_VOLUME_MUTE, VK_VOLUME_UP, VK_XBUTTON1, VK_XBUTTON2, VK_ZOOM,
 };
-use windows_sys::Win32::UI::TextServices::HKL;
 
 use crate::keyboard::{Key, KeyCode, ModifiersState, NamedKey, NativeKey, PhysicalKey};
 use crate::platform_impl::{loword, primarylangid, scancode_to_physicalkey};
diff --git a/src/platform_impl/windows/monitor.rs b/src/platform_impl/windows/monitor.rs
index 764f8c64..40304dd1 100644
--- a/src/platform_impl/windows/monitor.rs
+++ b/src/platform_impl/windows/monitor.rs
@@ -63,12 +63,10 @@ impl VideoModeHandle {
 #[derive(Debug, Clone, Eq, PartialEq, Hash, PartialOrd, Ord)]
 pub struct MonitorHandle(HMONITOR);
 
-// Send is not implemented for HMONITOR, we have to wrap it and implement it manually.
-// For more info see:
-// https://github.com/retep998/winapi-rs/issues/360
-// https://github.com/retep998/winapi-rs/issues/396
+// Send and Sync are not implemented for HMONITOR, we have to wrap it and implement them manually.
 
 unsafe impl Send for MonitorHandle {}
+unsafe impl Sync for MonitorHandle {}
 
 unsafe extern "system" fn monitor_enum_proc(
     hmonitor: HMONITOR,
@@ -85,7 +83,7 @@ pub fn available_monitors() -> VecDeque<MonitorHandle> {
     let mut monitors: VecDeque<MonitorHandle> = VecDeque::new();
     unsafe {
         EnumDisplayMonitors(
-            0,
+            ptr::null_mut(),
             ptr::null(),
             Some(monitor_enum_proc),
             &mut monitors as *mut _ as LPARAM,
diff --git a/src/platform_impl/windows/raw_input.rs b/src/platform_impl/windows/raw_input.rs
index 87d16750..a64394e3 100644
--- a/src/platform_impl/windows/raw_input.rs
+++ b/src/platform_impl/windows/raw_input.rs
@@ -139,7 +139,7 @@ pub fn register_all_mice_and_keyboards_for_raw_input(
     // RIDEV_REMOVE: don't receive device events (requires NULL hwndTarget)
     let flags = match filter {
         DeviceEvents::Never => {
-            window_handle = 0;
+            window_handle = ptr::null_mut();
             RIDEV_REMOVE
         },
         DeviceEvents::WhenFocused => RIDEV_DEVNOTIFY,
diff --git a/src/platform_impl/windows/util.rs b/src/platform_impl/windows/util.rs
index 89288d1b..5aee1d54 100644
--- a/src/platform_impl/windows/util.rs
+++ b/src/platform_impl/windows/util.rs
@@ -189,7 +189,7 @@ pub(super) fn get_function_impl(library: &str, function: &str) -> Option<*const
 
     // Library names we will use are ASCII so we can use the A version to avoid string conversion.
     let module = unsafe { LoadLibraryA(library.as_ptr()) };
-    if module == 0 {
+    if module.is_null() {
         return None;
     }
 
diff --git a/src/platform_impl/windows/window.rs b/src/platform_impl/windows/window.rs
index dd75dee9..a2d00613 100644
--- a/src/platform_impl/windows/window.rs
+++ b/src/platform_impl/windows/window.rs
@@ -73,10 +73,25 @@ use crate::window::{
     WindowLevel,
 };
 
+#[derive(Clone, Copy)]
+#[repr(transparent)]
+/// We need to pass the window handle to the event loop thread, which means it needs to be
+/// Send+Sync.
+struct SyncWindowHandle(HWND);
+
+unsafe impl Send for SyncWindowHandle {}
+unsafe impl Sync for SyncWindowHandle {}
+
+impl SyncWindowHandle {
+    fn hwnd(&self) -> HWND {
+        self.0
+    }
+}
+
 /// The Win32 implementation of the main `Window` object.
 pub(crate) struct Window {
     /// Main handle for the window.
-    window: HWND,
+    window: SyncWindowHandle,
 
     /// The current window state.
     window_state: Arc<Mutex<WindowState>>,
@@ -103,7 +118,7 @@ impl Window {
 
     /// Returns the `hwnd` of this window.
     pub fn hwnd(&self) -> HWND {
-        self.window
+        self.window.hwnd()
     }
 
     pub unsafe fn rwh_06_no_thread_check(
@@ -111,7 +126,7 @@ impl Window {
     ) -> Result<rwh_06::RawWindowHandle, rwh_06::HandleError> {
         let mut window_handle = rwh_06::Win32WindowHandle::new(unsafe {
             // SAFETY: Handle will never be zero.
-            std::num::NonZeroIsize::new_unchecked(self.window)
+            std::num::NonZeroIsize::new_unchecked(self.window.hwnd() as isize)
         });
         let hinstance = unsafe { super::get_window_long(self.hwnd(), GWLP_HINSTANCE) };
         window_handle.hinstance = std::num::NonZeroIsize::new(hinstance);
@@ -150,8 +165,7 @@ impl Window {
         let window_state = Arc::clone(&self.window_state);
 
         self.thread_executor.execute_in_thread(move || {
-            let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::MARKER_UNDECORATED_SHADOW, shadow)
             });
         });
@@ -202,7 +216,7 @@ impl Window {
             unsafe { ReleaseCapture() };
 
             unsafe {
-                PostMessageW(window, WM_NCLBUTTONDOWN, wparam, &points as *const _ as LPARAM)
+                PostMessageW(window.hwnd(), WM_NCLBUTTONDOWN, wparam, &points as *const _ as LPARAM)
             };
         });
     }
@@ -227,7 +241,7 @@ impl Window {
 
             // get the current system menu
             let h_menu = GetSystemMenu(self.hwnd(), 0);
-            if h_menu == 0 {
+            if h_menu.is_null() {
                 warn!("The corresponding window doesn't have a system menu");
                 // This situation should not be treated as an error so just return without showing
                 // menu.
@@ -373,7 +387,7 @@ impl CoreWindow for Window {
         let window_state = Arc::clone(&self.window_state);
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::TRANSPARENT, transparent)
             });
         });
@@ -386,21 +400,21 @@ impl CoreWindow for Window {
         let window_state = Arc::clone(&self.window_state);
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::VISIBLE, visible)
             });
         });
     }
 
     fn is_visible(&self) -> Option<bool> {
-        Some(unsafe { IsWindowVisible(self.window) == 1 })
+        Some(unsafe { IsWindowVisible(self.window.hwnd()) == 1 })
     }
 
     fn request_redraw(&self) {
         // NOTE: mark that we requested a redraw to handle requests during `WM_PAINT` handling.
         self.window_state.lock().unwrap().redraw_requested = true;
         unsafe {
-            RedrawWindow(self.hwnd(), ptr::null(), 0, RDW_INTERNALPAINT);
+            RedrawWindow(self.hwnd(), ptr::null(), ptr::null_mut(), RDW_INTERNALPAINT);
         }
     }
 
@@ -434,7 +448,7 @@ impl CoreWindow for Window {
         let window = self.window;
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::MAXIMIZED, false)
             });
         });
@@ -442,14 +456,14 @@ impl CoreWindow for Window {
         unsafe {
             SetWindowPos(
                 self.hwnd(),
-                0,
+                ptr::null_mut(),
                 x,
                 y,
                 0,
                 0,
                 SWP_ASYNCWINDOWPOS | SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE,
             );
-            InvalidateRgn(self.hwnd(), 0, false.into());
+            InvalidateRgn(self.hwnd(), ptr::null_mut(), false.into());
         }
     }
 
@@ -485,7 +499,7 @@ impl CoreWindow for Window {
             let window = self.window;
             self.thread_executor.execute_in_thread(move || {
                 let _ = &window;
-                WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+                WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                     f.set(WindowFlags::MAXIMIZED, false)
                 });
             });
@@ -528,7 +542,7 @@ impl CoreWindow for Window {
 
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::RESIZABLE, resizable)
             });
         });
@@ -545,7 +559,7 @@ impl CoreWindow for Window {
 
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::MINIMIZABLE, buttons.contains(WindowButtons::MINIMIZE));
                 f.set(WindowFlags::MAXIMIZABLE, buttons.contains(WindowButtons::MAXIMIZE));
                 f.set(WindowFlags::CLOSABLE, buttons.contains(WindowButtons::CLOSE))
@@ -573,7 +587,7 @@ impl CoreWindow for Window {
             Cursor::Icon(icon) => {
                 self.window_state_lock().mouse.selected_cursor = SelectedCursor::Named(icon);
                 self.thread_executor.execute_in_thread(move || unsafe {
-                    let cursor = LoadCursorW(0, util::to_windows_cursor(icon));
+                    let cursor = LoadCursorW(ptr::null_mut(), util::to_windows_cursor(icon));
                     SetCursor(cursor);
                 });
             },
@@ -606,7 +620,7 @@ impl CoreWindow for Window {
                 .lock()
                 .unwrap()
                 .mouse
-                .set_cursor_flags(window, |f| f.set(CursorFlags::GRABBED, confine))
+                .set_cursor_flags(window.hwnd(), |f| f.set(CursorFlags::GRABBED, confine))
                 .map_err(|err| os_error!(err).into());
             let _ = tx.send(result);
         });
@@ -625,7 +639,7 @@ impl CoreWindow for Window {
                 .lock()
                 .unwrap()
                 .mouse
-                .set_cursor_flags(window, |f| f.set(CursorFlags::HIDDEN, !visible))
+                .set_cursor_flags(window.hwnd(), |f| f.set(CursorFlags::HIDDEN, !visible))
                 .map_err(|e| e.to_string());
             let _ = tx.send(result);
         });
@@ -687,7 +701,7 @@ impl CoreWindow for Window {
         let window = self.window;
         let window_state = Arc::clone(&self.window_state);
         self.thread_executor.execute_in_thread(move || {
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::IGNORE_CURSOR_EVENT, !hittest)
             });
         });
@@ -710,7 +724,7 @@ impl CoreWindow for Window {
             WindowState::set_window_flags_in_place(&mut window_state.lock().unwrap(), |f| {
                 f.set(WindowFlags::MINIMIZED, is_minimized)
             });
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::MINIMIZED, minimized)
             });
         });
@@ -726,7 +740,7 @@ impl CoreWindow for Window {
 
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::MAXIMIZED, maximized)
             });
         });
@@ -756,7 +770,7 @@ impl CoreWindow for Window {
             // Return if saved Borderless(monitor) is the same as current monitor when requested
             // fullscreen is Borderless(None)
             (Some(Fullscreen::Borderless(Some(monitor))), Some(Fullscreen::Borderless(None)))
-                if *monitor == monitor::current_monitor(window) =>
+                if *monitor == monitor::current_monitor(window.hwnd()) =>
             {
                 return
             },
@@ -783,7 +797,7 @@ impl CoreWindow for Window {
                         ChangeDisplaySettingsExW(
                             monitor_info.szDevice.as_ptr(),
                             &*video_mode.native_video_mode,
-                            0,
+                            ptr::null_mut(),
                             CDS_FULLSCREEN,
                             ptr::null(),
                         )
@@ -800,7 +814,7 @@ impl CoreWindow for Window {
                         ChangeDisplaySettingsExW(
                             ptr::null(),
                             ptr::null(),
-                            0,
+                            ptr::null_mut(),
                             CDS_FULLSCREEN,
                             ptr::null(),
                         )
@@ -825,11 +839,11 @@ impl CoreWindow for Window {
                 // fine, taking control back from the DWM and ensuring that the `SetWindowPos` call
                 // below goes through.
                 let mut msg = mem::zeroed();
-                PeekMessageW(&mut msg, 0, 0, 0, PM_NOREMOVE);
+                PeekMessageW(&mut msg, ptr::null_mut(), 0, 0, PM_NOREMOVE);
             }
 
             // Update window style
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(
                     WindowFlags::MARKER_EXCLUSIVE_FULLSCREEN,
                     matches!(fullscreen, Some(Fullscreen::Exclusive(_, _))),
@@ -846,7 +860,7 @@ impl CoreWindow for Window {
             // will generate WM_SIZE messages of the old window size that can race with what we set
             // below
             unsafe {
-                taskbar_mark_fullscreen(window, fullscreen.is_some());
+                taskbar_mark_fullscreen(window.hwnd(), fullscreen.is_some());
             }
 
             // Update window bounds
@@ -855,7 +869,7 @@ impl CoreWindow for Window {
                     // Save window bounds before entering fullscreen
                     let placement = unsafe {
                         let mut placement = mem::zeroed();
-                        GetWindowPlacement(window, &mut placement);
+                        GetWindowPlacement(window.hwnd(), &mut placement);
                         placement
                     };
 
@@ -864,7 +878,7 @@ impl CoreWindow for Window {
                     let monitor = match &fullscreen {
                         Fullscreen::Exclusive(monitor, _) => monitor.clone(),
                         Fullscreen::Borderless(Some(monitor)) => monitor.clone(),
-                        Fullscreen::Borderless(None) => monitor::current_monitor(window),
+                        Fullscreen::Borderless(None) => monitor::current_monitor(window.hwnd()),
                     };
 
                     let position: (i32, i32) = monitor.position().unwrap_or_default().into();
@@ -872,15 +886,15 @@ impl CoreWindow for Window {
 
                     unsafe {
                         SetWindowPos(
-                            window,
-                            0,
+                            window.hwnd(),
+                            ptr::null_mut(),
                             position.0,
                             position.1,
                             size.0 as i32,
                             size.1 as i32,
                             SWP_ASYNCWINDOWPOS | SWP_NOZORDER,
                         );
-                        InvalidateRgn(window, 0, false.into());
+                        InvalidateRgn(window.hwnd(), ptr::null_mut(), false.into());
                     }
                 },
                 None => {
@@ -888,8 +902,8 @@ impl CoreWindow for Window {
                     if let Some(SavedWindow { placement }) = window_state_lock.saved_window.take() {
                         drop(window_state_lock);
                         unsafe {
-                            SetWindowPlacement(window, &placement);
-                            InvalidateRgn(window, 0, false.into());
+                            SetWindowPlacement(window.hwnd(), &placement);
+                            InvalidateRgn(window.hwnd(), ptr::null_mut(), false.into());
                         }
                     }
                 },
@@ -903,7 +917,7 @@ impl CoreWindow for Window {
 
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::MARKER_DECORATIONS, decorations)
             });
         });
@@ -920,7 +934,7 @@ impl CoreWindow for Window {
 
         self.thread_executor.execute_in_thread(move || {
             let _ = &window;
-            WindowState::set_window_flags(window_state.lock().unwrap(), window, |f| {
+            WindowState::set_window_flags(window_state.lock().unwrap(), window.hwnd(), |f| {
                 f.set(WindowFlags::ALWAYS_ON_TOP, level == WindowLevel::AlwaysOnTop);
                 f.set(WindowFlags::ALWAYS_ON_BOTTOM, level == WindowLevel::AlwaysOnBottom);
             });
@@ -953,7 +967,7 @@ impl CoreWindow for Window {
         let state = self.window_state.clone();
         self.thread_executor.execute_in_thread(move || unsafe {
             let scale_factor = state.lock().unwrap().scale_factor;
-            ImeContext::current(window).set_ime_cursor_area(spot, size, scale_factor);
+            ImeContext::current(window.hwnd()).set_ime_cursor_area(spot, size, scale_factor);
         });
     }
 
@@ -962,7 +976,7 @@ impl CoreWindow for Window {
         let state = self.window_state.clone();
         self.thread_executor.execute_in_thread(move || unsafe {
             state.lock().unwrap().ime_allowed = allowed;
-            ImeContext::set_ime_allowed(window, allowed);
+            ImeContext::set_ime_allowed(window.hwnd(), allowed);
         })
     }
 
@@ -971,7 +985,7 @@ impl CoreWindow for Window {
     fn request_user_attention(&self, request_type: Option<UserAttentionType>) {
         let window = self.window;
         let active_window_handle = unsafe { GetActiveWindow() };
-        if window == active_window_handle {
+        if window.hwnd() == active_window_handle {
             return;
         }
 
@@ -985,7 +999,7 @@ impl CoreWindow for Window {
 
             let flash_info = FLASHWINFO {
                 cbSize: mem::size_of::<FLASHWINFO>() as u32,
-                hwnd: window,
+                hwnd: window.hwnd(),
                 dwFlags: flags,
                 uCount: count,
                 dwTimeout: 0,
@@ -995,7 +1009,7 @@ impl CoreWindow for Window {
     }
 
     fn set_theme(&self, theme: Option<Theme>) {
-        try_theme(self.window, theme);
+        try_theme(self.window.hwnd(), theme);
     }
 
     fn theme(&self) -> Option<Theme> {
@@ -1008,9 +1022,9 @@ impl CoreWindow for Window {
     }
 
     fn title(&self) -> String {
-        let len = unsafe { GetWindowTextLengthW(self.window) } + 1;
+        let len = unsafe { GetWindowTextLengthW(self.window.hwnd()) } + 1;
         let mut buf = vec![0; len as usize];
-        unsafe { GetWindowTextW(self.window, buf.as_mut_ptr(), len) };
+        unsafe { GetWindowTextW(self.window.hwnd(), buf.as_mut_ptr(), len) };
         util::decode_wide(&buf).to_string_lossy().to_string()
     }
 
@@ -1020,10 +1034,10 @@ impl CoreWindow for Window {
 
         let is_visible = window_flags.contains(WindowFlags::VISIBLE);
         let is_minimized = util::is_minimized(self.hwnd());
-        let is_foreground = self.window == unsafe { GetForegroundWindow() };
+        let is_foreground = self.window.hwnd() == unsafe { GetForegroundWindow() };
 
         if is_visible && !is_minimized && !is_foreground {
-            unsafe { force_window_active(self.window) };
+            unsafe { force_window_active(self.window.hwnd()) };
         }
     }
 
@@ -1111,7 +1125,11 @@ impl InitData<'_> {
 
         unsafe { ImeContext::set_ime_allowed(window, false) };
 
-        Window { window, window_state, thread_executor: self.event_loop.create_thread_executor() }
+        Window {
+            window: SyncWindowHandle(window),
+            window_state,
+            thread_executor: self.event_loop.create_thread_executor(),
+        }
     }
 
     unsafe fn create_window_data(&self, win: &Window) -> event_loop::WindowData {
@@ -1131,14 +1149,14 @@ impl InitData<'_> {
 
             let file_drop_runner = self.event_loop.runner_shared.clone();
             let file_drop_handler = FileDropHandler::new(
-                win.window,
+                win.window.hwnd(),
                 Box::new(move |event| file_drop_runner.send_event(event)),
             );
 
             let handler_interface_ptr =
                 unsafe { &mut (*file_drop_handler.data).interface as *mut _ as *mut c_void };
 
-            assert_eq!(unsafe { RegisterDragDrop(win.window, handler_interface_ptr) }, S_OK);
+            assert_eq!(unsafe { RegisterDragDrop(win.window.hwnd(), handler_interface_ptr) }, S_OK);
             Some(file_drop_handler)
         } else {
             None
@@ -1317,8 +1335,8 @@ unsafe fn init(
             CW_USEDEFAULT,
             CW_USEDEFAULT,
             CW_USEDEFAULT,
-            parent.unwrap_or(0),
-            menu.unwrap_or(0),
+            parent.unwrap_or(ptr::null_mut()),
+            menu.unwrap_or(ptr::null_mut()),
             util::get_instance_handle(),
             &mut initdata as *mut _ as *mut _,
         )
@@ -1329,7 +1347,7 @@ unsafe fn init(
         panic::resume_unwind(panic_error)
     }
 
-    if handle == 0 {
+    if handle.is_null() {
         return Err(os_error!(io::Error::last_os_error()).into());
     }
 
@@ -1342,7 +1360,7 @@ unsafe fn init(
     // size.
     if fullscreen.is_some() {
         win.set_fullscreen(fullscreen);
-        unsafe { force_window_active(win.window) };
+        unsafe { force_window_active(win.window.hwnd()) };
     } else if maximized {
         win.set_maximized(true);
     }
@@ -1358,12 +1376,12 @@ unsafe fn register_window_class(class_name: &[u16]) {
         cbClsExtra: 0,
         cbWndExtra: 0,
         hInstance: util::get_instance_handle(),
-        hIcon: 0,
-        hCursor: 0, // must be null in order for cursor state to work properly
-        hbrBackground: 0,
+        hIcon: ptr::null_mut(),
+        hCursor: ptr::null_mut(), // must be null in order for cursor state to work properly
+        hbrBackground: ptr::null_mut(),
         lpszMenuName: ptr::null(),
         lpszClassName: class_name.as_ptr(),
-        hIconSm: 0,
+        hIconSm: ptr::null_mut(),
     };
 
     // We ignore errors because registering the same window class twice would trigger
diff --git a/src/platform_impl/windows/window_state.rs b/src/platform_impl/windows/window_state.rs
index f84dd2cf..d128c1d9 100644
--- a/src/platform_impl/windows/window_state.rs
+++ b/src/platform_impl/windows/window_state.rs
@@ -1,5 +1,5 @@
-use std::io;
 use std::sync::MutexGuard;
+use std::{io, ptr};
 
 use bitflags::bitflags;
 use windows_sys::Win32::Foundation::{HWND, RECT};
@@ -356,7 +356,7 @@ impl WindowFlags {
                     0,
                     SWP_ASYNCWINDOWPOS | SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE,
                 );
-                InvalidateRgn(window, 0, false.into());
+                InvalidateRgn(window, ptr::null_mut(), false.into());
             }
         }
 
@@ -420,7 +420,7 @@ impl WindowFlags {
                 }
 
                 // Refresh the window frame
-                SetWindowPos(window, 0, 0, 0, 0, 0, flags);
+                SetWindowPos(window, ptr::null_mut(), 0, 0, 0, 0, flags);
                 SendMessageW(window, event_loop::SET_RETAIN_STATE_ON_SIZE_MSG_ID.get(), 0, 0);
             }
         }
@@ -438,7 +438,7 @@ impl WindowFlags {
             }
 
             util::win_to_err({
-                let b_menu = GetMenu(hwnd) != 0;
+                let b_menu = !GetMenu(hwnd).is_null();
                 if let (Some(get_dpi_for_window), Some(adjust_window_rect_ex_for_dpi)) =
                     (*util::GET_DPI_FOR_WINDOW, *util::ADJUST_WINDOW_RECT_EX_FOR_DPI)
                 {
@@ -468,14 +468,14 @@ impl WindowFlags {
             let (width, height): (u32, u32) = self.adjust_size(hwnd, size).into();
             SetWindowPos(
                 hwnd,
-                0,
+                ptr::null_mut(),
                 0,
                 0,
                 width as _,
                 height as _,
                 SWP_ASYNCWINDOWPOS | SWP_NOZORDER | SWP_NOREPOSITION | SWP_NOMOVE | SWP_NOACTIVATE,
             );
-            InvalidateRgn(hwnd, 0, false.into());
+            InvalidateRgn(hwnd, ptr::null_mut(), false.into());
         }
     }
 }