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-rw-r--r--src/Fl_x.cxx7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/Fl_x.cxx b/src/Fl_x.cxx
index ef3906a4e..fa48e5fef 100644
--- a/src/Fl_x.cxx
+++ b/src/Fl_x.cxx
@@ -1506,12 +1506,19 @@ int fl_handle(const XEvent& thisevent)
case ButtonPress:
Fl::e_keysym = FL_Button + xevent.xbutton.button;
set_event_xy();
+ Fl::e_dx = Fl::e_dy = 0;
if (xevent.xbutton.button == Button4) {
Fl::e_dy = -1; // Up
event = FL_MOUSEWHEEL;
} else if (xevent.xbutton.button == Button5) {
Fl::e_dy = +1; // Down
event = FL_MOUSEWHEEL;
+ } else if (xevent.xbutton.button == 6) {
+ Fl::e_dx = -1; // Left
+ event = FL_MOUSEWHEEL;
+ } else if (xevent.xbutton.button == 7) {
+ Fl::e_dx = +1; // Right
+ event = FL_MOUSEWHEEL;
} else {
Fl::e_state |= (FL_BUTTON1 << (xevent.xbutton.button-1));
event = FL_PUSH;