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-rw-r--r--library/listbox.tcl2
1 files changed, 1 insertions, 1 deletions
diff --git a/library/listbox.tcl b/library/listbox.tcl
index 9fd86e4..40fe9f7 100644
--- a/library/listbox.tcl
+++ b/library/listbox.tcl
@@ -176,7 +176,7 @@ bind Listbox <B2-Motion> {
# The MouseWheel will typically only fire on Windows and Mac OS X.
# However, someone could use the "event generate" command to produce
# one on other platforms.
-if {[tk windowingsystem] eq "classic" || [tk windowingsystem] eq "aqua"} {
+if {[tk windowingsystem] eq "aqua"} {
bind Listbox <MouseWheel> {
%W yview scroll [expr {- (%D)}] units
}