Added timer

src/windows/mod.rs

@@ -2,7 +2,7 @@ use windows::Win32::Graphics::Gdi::ClientToScreen;
 use windows::Win32::System::Com::VT_I4;
 use windows::Win32::System::Ole::{VariantClear, VariantInit};
 use windows::Win32::UI::Accessibility::{
-    AccessibleObjectFromEvent, AccessibleObjectFromWindow, IAccessible,
+    AccessibleObjectFromEvent, IAccessible,
 };
 
 use std::sync::atomic::AtomicPtr;
@@ -16,7 +16,7 @@ use windows::Win32::UI::WindowsAndMessaging::{
     GetWindowThreadProcessId, IsHungAppWindow, PostMessageW, RegisterWindowMessageW,
     TranslateMessage, CHILDID_SELF, EVENT_OBJECT_DESTROY, EVENT_OBJECT_LOCATIONCHANGE,
     EVENT_OBJECT_NAMECHANGE, EVENT_SYSTEM_FOREGROUND, EVENT_SYSTEM_MINIMIZEEND, MSG,
-    OBJECT_IDENTIFIER, OBJID_WINDOW, STATE_SYSTEM_FOCUSED, WINEVENT_OUTOFCONTEXT,
+    OBJECT_IDENTIFIER, OBJID_WINDOW, STATE_SYSTEM_FOCUSED, WINEVENT_OUTOFCONTEXT, SetTimer,
 };
 use windows::Win32::{
     Foundation::HWND,
@@ -370,6 +370,7 @@ impl Runtime {
         self.target.destroyed_change.bind();
 
         let has_access = self.has_uipi_access();
+
         if let Some(bounds) = self.get_content_bounds() {
             self.underlay_tx
                 .send(UnderlayEvent::Attach { bounds, has_access })
@@ -380,6 +381,7 @@ impl Runtime {
         } else {
             self.target.hwnd = Default::default();
         }
+
     }
 
     fn msaa_check_window_focused_state(&mut self, hwnd: HWND) -> bool {
@@ -461,6 +463,8 @@ impl Runtime {
     }
 }
 
+const OW_FOREGROUND_TIMER_MS: u32 = 83;
+
 pub fn init(
     window_title: String,
     tx: std::sync::mpsc::Sender<crate::UnderlayEvent>,
@@ -493,6 +497,7 @@ pub fn init(
         };
         runtime.foreground_change.bind();
         runtime.unminimize_change.bind();
+        unsafe { SetTimer(HWND::default(), 0, OW_FOREGROUND_TIMER_MS, Some(global_timer_hook)) };
 
         GLOBAL_CALLBACK_SENDER.store(
             Box::into_raw(Box::new(Arc::new(Mutex::new(runtime)))),