add comment

diff --git a/src/blackbox.cc b/src/blackbox.cc
index 43f02f244b6f699323255aff0a7cde3ac98fad28..29de882089e3c2570e5b7e02393c17a9cfdf9bcc 100644 (file)
--- a/src/blackbox.cc
+++ b/src/blackbox.cc
@@ -439,6 +439,7 @@ void Blackbox::process_event(XEvent *e) {
     if ( i > 0 )
       e = &realevent;
 
+    // the pointer is on the wrong screen
     if (! e->xmotion.same_screen)
       break;