endpoint WindowClient = 4
{
    Paint(i32 window_id, Gfx::Size window_size, Vector<Gfx::Rect> rects) =|
    MouseMove(i32 window_id, Gfx::Point mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta, bool is_drag, String drag_data_type) =|
    MouseDown(i32 window_id, Gfx::Point mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta) =|
    MouseDoubleClick(i32 window_id, Gfx::Point mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta) =|
    MouseUp(i32 window_id, Gfx::Point mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta) =|
    MouseWheel(i32 window_id, Gfx::Point mouse_position, u32 button, u32 buttons, u32 modifiers, i32 wheel_delta) =|
    WindowEntered(i32 window_id) =|
    WindowLeft(i32 window_id) =|
    KeyDown(i32 window_id, u8 character, u32 key, u32 modifiers) =|
    KeyUp(i32 window_id, u8 character, u32 key, u32 modifiers) =|
    WindowActivated(i32 window_id) =|
    WindowDeactivated(i32 window_id) =|
    WindowStateChanged(i32 window_id, bool minimized, bool occluded) =|
    WindowCloseRequest(i32 window_id) =|
    WindowResized(i32 window_id, Gfx::Rect old_rect, Gfx::Rect new_rect) =|

    MenuItemActivated(i32 menu_id, i32 identifier) =|

    ScreenRectChanged(Gfx::Rect rect) =|

    ClipboardContentsChanged(String content_type) =|

    WM_WindowRemoved(i32 wm_id, i32 client_id, i32 window_id) =|
    WM_WindowStateChanged(i32 wm_id, i32 client_id, i32 window_id, bool is_active, bool is_minimized, bool is_frameless, i32 window_type, String title, Gfx::Rect rect) =|
    WM_WindowIconBitmapChanged(i32 wm_id, i32 client_id, i32 window_id, i32 icon_buffer_id, Gfx::Size icon_size) =|
    WM_WindowRectChanged(i32 wm_id, i32 client_id, i32 window_id, Gfx::Rect rect) =|

    AsyncSetWallpaperFinished(bool success) =|

    DragAccepted() =|
    DragCancelled() =|

    DragDropped(i32 window_id, Gfx::Point mouse_position, String text, String data_type, String data) =|

    UpdateSystemTheme(i32 system_theme_buffer_id) =|

    DisplayLinkNotification() =|
}