X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=hacks%2Fglx%2Fmoebius.c;h=d05e8c65e3149167c41c11316eff4e921f518e34;hp=9052f4bcc6c3e83ff08af3e20484ae960bd5ad5e;hb=2d04c4f22466851aedb6ed0f2919d148f726b889;hpb=bc7b7a8eb122206d239ec0e693676bcce31be1aa

diff --git a/hacks/glx/moebius.c b/hacks/glx/moebius.c
index 9052f4bc..d05e8c65 100644
--- a/hacks/glx/moebius.c
+++ b/hacks/glx/moebius.c
@@ -643,7 +643,7 @@ moebius_handle_event (ModeInfo *mi, XEvent *event)
   moebiusstruct *mp = &moebius[MI_SCREEN(mi)];
 
   if (event->xany.type == ButtonPress &&
-      event->xbutton.button & Button1)
+      event->xbutton.button == Button1)
     {
       mp->button_down_p = True;
       gltrackball_start (mp->trackball,
@@ -652,11 +652,19 @@ moebius_handle_event (ModeInfo *mi, XEvent *event)
       return True;
     }
   else if (event->xany.type == ButtonRelease &&
-           event->xbutton.button & Button1)
+           event->xbutton.button == Button1)
     {
       mp->button_down_p = False;
       return True;
     }
+  else if (event->xany.type == ButtonPress &&
+           (event->xbutton.button == Button4 ||
+            event->xbutton.button == Button5))
+    {
+      gltrackball_mousewheel (mp->trackball, event->xbutton.button, 10,
+                              !!event->xbutton.state);
+      return True;
+    }
   else if (event->xany.type == MotionNotify &&
            mp->button_down_p)
     {