X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fx11%2Ffg_spaceball_x11.c;h=e8c328a7a524f70824e3e695193cdebb5e802725;hb=0f239b79d6e1db71dece3ca2016aa7eacd81a57d;hp=e6eabb2f146ab2e13b0db49cffc8bc90d25f3828;hpb=a0871c21cb859cea6f24802b6828352a211ab102;p=freeglut

diff --git a/src/x11/fg_spaceball_x11.c b/src/x11/fg_spaceball_x11.c
index e6eabb2..e8c328a 100644
--- a/src/x11/fg_spaceball_x11.c
+++ b/src/x11/fg_spaceball_x11.c
@@ -136,7 +136,8 @@ void fgSpaceballHandleXEvent(const XEvent *xev)
             break;
 
         case SPNAV_EVENT_BUTTON:
-            INVOKE_WCB(*spnav_win, SpaceButton, (sev.button.bnum, sev.button.press ? GLUT_DOWN : GLUT_UP));
+            /* button numbers are 1-based in glutSpaceballButtonFunc */
+            INVOKE_WCB(*spnav_win, SpaceButton, (sev.button.bnum + 1, sev.button.press ? GLUT_DOWN : GLUT_UP));
             break;
 
         default: