From e942bbad589c16f94dfb452c587fe9c5ec142c7d Mon Sep 17 00:00:00 2001
From: Helios Agent <agent.helios82@gmail.com>
Date: Tue, 3 Mar 2026 15:29:14 +0100
Subject: [PATCH] fix(client): force-foreground with fake Alt key, filter
 visible-only windows

---
 crates/client/src/windows_mgmt.rs | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/crates/client/src/windows_mgmt.rs b/crates/client/src/windows_mgmt.rs
index 465cb96..ebc895e 100644
--- a/crates/client/src/windows_mgmt.rs
+++ b/crates/client/src/windows_mgmt.rs
@@ -9,7 +9,10 @@ mod win_impl {
     use windows::Win32::Foundation::{BOOL, HWND, LPARAM};
     use windows::Win32::UI::WindowsAndMessaging::{
         BringWindowToTop, EnumWindows, GetWindowTextW, IsWindowVisible, SetForegroundWindow,
-        ShowWindow, SW_MAXIMIZE, SW_MINIMIZE, SHOW_WINDOW_CMD,
+        ShowWindow, SW_MAXIMIZE, SW_MINIMIZE, SW_RESTORE, SHOW_WINDOW_CMD,
+    };
+    use windows::Win32::UI::Input::KeyboardAndMouse::{
+        keybd_event, KEYEVENTF_KEYUP, VK_MENU,
     };
 
     // Collect HWNDs via EnumWindows callback
@@ -68,12 +71,20 @@ mod win_impl {
         Ok(())
     }
 
+    /// Bypass Windows Focus Stealing Prevention by sending a fake Alt keypress
+    /// before calling SetForegroundWindow. Without this, SetForegroundWindow
+    /// silently fails when the calling thread is not in the foreground.
+    unsafe fn force_foreground(hwnd: HWND) {
+        keybd_event(VK_MENU.0 as u8, 0, Default::default(), 0);
+        keybd_event(VK_MENU.0 as u8, 0, KEYEVENTF_KEYUP, 0);
+        ShowWindow(hwnd, SW_RESTORE);
+        BringWindowToTop(hwnd).ok();
+        SetForegroundWindow(hwnd);
+    }
+
     pub fn focus_window(window_id: u64) -> Result<(), String> {
         let hwnd = HWND(window_id as isize);
-        unsafe {
-            BringWindowToTop(hwnd).map_err(|e| format!("BringWindowToTop failed: {e}"))?;
-            SetForegroundWindow(hwnd);
-        }
+        unsafe { force_foreground(hwnd); }
         Ok(())
     }
 
@@ -81,8 +92,7 @@ mod win_impl {
         let hwnd = HWND(window_id as isize);
         unsafe {
             ShowWindow(hwnd, SW_MAXIMIZE);
-            BringWindowToTop(hwnd).map_err(|e| format!("BringWindowToTop failed: {e}"))?;
-            SetForegroundWindow(hwnd);
+            force_foreground(hwnd);
         }
         Ok(())
     }