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-rw-r--r--library/scrlbar.tcl11
1 files changed, 8 insertions, 3 deletions
diff --git a/library/scrlbar.tcl b/library/scrlbar.tcl
index b7be014..6f1caa2 100644
--- a/library/scrlbar.tcl
+++ b/library/scrlbar.tcl
@@ -430,6 +430,9 @@ proc ::tk::ScrollTopBottom {w x y} {
proc ::tk::ScrollButton2Down {w x y} {
variable ::tk::Priv
+ if {![winfo exists $w]} {
+ return
+ }
set element [$w identify $x $y]
if {[string match {arrow[12]} $element]} {
ScrollButtonDown $w $x $y
@@ -443,7 +446,9 @@ proc ::tk::ScrollButton2Down {w x y} {
# slider drag.
update idletasks
- $w configure -activerelief sunken
- $w activate slider
- ScrollStartDrag $w $x $y
+ if {[winfo exists $w]} {
+ $w configure -activerelief sunken
+ $w activate slider
+ ScrollStartDrag $w $x $y
+ }
}