http://ftp.ksu.edu.tw/FTP/FreeBSD/distfiles/xscreensaver-4.20.tar.gz

[xscreensaver] / hacks / glx / flipflop.c

diff --git a/hacks/glx/flipflop.c b/hacks/glx/flipflop.c
index 1aadee77de347218b97282688a1375577650b5af..af671ca802aa3f52899c153b2ea1f91de5accd95 100644 (file)
--- a/hacks/glx/flipflop.c
+++ b/hacks/glx/flipflop.c
@@ -146,7 +146,7 @@ flipflop_handle_event (ModeInfo *mi, XEvent *event)
   Flipflopcreen *c = &qs[MI_SCREEN(mi)];
 
   if (event->xany.type == ButtonPress &&
-      event->xbutton.button & Button1)
+      event->xbutton.button == Button1)
     {
       c->button_down_p = True;
       gltrackball_start (c->trackball,
@@ -155,11 +155,19 @@ flipflop_handle_event (ModeInfo *mi, XEvent *event)
       return True;
     }
   else if (event->xany.type == ButtonRelease &&
-           event->xbutton.button & Button1)
+           event->xbutton.button == Button1)
     {
       c->button_down_p = False;
       return True;
     }
+  else if (event->xany.type == ButtonPress &&
+           (event->xbutton.button == Button4 ||
+            event->xbutton.button == Button5))
+    {
+      gltrackball_mousewheel (c->trackball, event->xbutton.button, 5,
+                              !event->xbutton.state);
+      return True;
+    }
   else if (event->xany.type == MotionNotify &&
            c->button_down_p)
     {