From 5492992c1cdae510ac3ecf655e9d66daedd9ad3c Mon Sep 17 00:00:00 2001
From: Kevin Walzer <kw@codebykevin.com>
Date: Wed, 28 Oct 2020 02:50:18 +0000
Subject: Add error handling for sysnotify on Windows if systray icon not
 created

---
 library/systray.tcl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/systray.tcl b/library/systray.tcl
index 462c8fb..0a18e08 100644
--- a/library/systray.tcl
+++ b/library/systray.tcl
@@ -318,7 +318,7 @@ proc ::tk::sysnotify {title message} {
 
     switch -- [tk windowingsystem] {
 	"win32" {
-	    if {![info exists $::winicoprops::ico]} {
+	    if {$::winicoprops::ico eq ""} {
 		error "Must create a system tray icon with the \"tk systray\" command"
 	    }
 	    _sysnotify notify $::winicoprops::ico $title $message
-- 
cgit v0.12