Fix VS 2026 Windows build

src/main.cpp

@@ -92,6 +92,13 @@ void enqueue_main_task(Callable&& task)
     queue.tasklist.emplace_back(std::forward<Callable>(task));
 }
 
+void enqueue_main_task_bridge(std::packaged_task<void()> task)
+{
+    auto& queue = retained_main_task_queue();
+    std::lock_guard<std::mutex> lock(queue.task_mutex);
+    queue.tasklist.emplace_back(std::move(task));
+}
+
 void drain_main_tasks()
 {
     std::deque<std::packaged_task<void()>> working_list;
@@ -110,6 +117,16 @@ void drain_main_tasks()
 
 }
 
+HWND pp_windows_main_window_handle()
+{
+    return retained_state().hWnd;
+}
+
+void pp_windows_enqueue_main_task(std::packaged_task<void()> task)
+{
+    enqueue_main_task_bridge(std::move(task));
+}
+
 std::atomic<int> vr_frames{0};
 std::atomic<int> running{-1};
 std::atomic_bool vr_running{false};
@@ -1096,7 +1113,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
     case WM_ACTIVATE:
     {
         pp::platform::windows::platform_services().set_cursor_visible(true);
-        App::I->ui_task_async([=] {
+        App::I->ui_task_async([&state, wp, lp] {
             int active = GET_WM_ACTIVATE_STATE(wp, lp);
             WacomTablet::I.set_focus(active);
             static BYTE keys[256];