diff --git a/ddraw.dll b/ddraw.dll
index 40bb8d7..63fdd7d 100644
Binary files a/ddraw.dll and b/ddraw.dll differ
diff --git a/main.c b/main.c
index 06a35eb..be460b7 100644
--- a/main.c
+++ b/main.c
@@ -449,7 +449,11 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
                 return 0;
             }
             break;
-
+        case WM_NCLBUTTONDBLCLK:
+        {
+            ToggleFullscreen();
+            return 0;
+        }
         case WM_SYSKEYDOWN:
         {
             if (wParam == VK_RETURN)