commit e3e8fe494d71a0ab1869fd4fcd275366373b464d
Author:     Albrecht Schlosser <albrechts.fltk@online.de>
AuthorDate: Thu Jul 1 17:44:54 2021 +0200
Commit:     Albrecht Schlosser <albrechts.fltk@online.de>
CommitDate: Thu Jul 1 18:42:03 2021 +0200

    Fix FL_MOUSEWHEEL event coordinates in subwindow (#210)
    
    Issue #210: "Fl::event_x() & event_y() doesn't take into account
      embedded window's coords with Mouse wheel events"
    
    In fact the calculation of Fl::event_x() and Fl::event_y() used the
    wrong window coordinates if the event was sent to a subwindow.

 src/Fl.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git src/Fl.cxx src/Fl.cxx
index da4fa47..cf591cd 100644
--- src/Fl.cxx
+++ src/Fl.cxx
@@ -1341,7 +1341,7 @@ int Fl::handle_(int e, Fl_Window* window)
       return 1;
     }
     // Finally try sending it to the window, the event occurred in
-    if (send_event(FL_MOUSEWHEEL, window, window)) return 1;
+    if (send_event(FL_MOUSEWHEEL, window, window->top_window())) return 1;
   default:
     break;
   }