1 files changed, 6 insertions, 0 deletions
diff --git a/Services/Taskbar/WindowIdentifier.h b/Services/Taskbar/WindowIdentifier.h
index cdb645449a..c6e996992c 100644
--- a/Services/Taskbar/WindowIdentifier.h
+++ b/Services/Taskbar/WindowIdentifier.h
@@ -30,6 +30,7 @@
 
 class WindowIdentifier {
 public:
+    WindowIdentifier() = default;
     WindowIdentifier(int client_id, int window_id)
         : m_client_id(client_id)
         , m_window_id(window_id)
@@ -44,6 +45,11 @@ public:
         return m_client_id == other.m_client_id && m_window_id == other.m_window_id;
     }
 
+    bool is_valid() const
+    {
+        return m_client_id != -1 && m_window_id != -1;
+    }
+
 private:
     int m_client_id { -1 };
     int m_window_id { -1 };