From b0fe42a39b4e7220db987bf0ee05bc67ef198e50 Mon Sep 17 00:00:00 2001
From: Lexikos <unravelin@gmail.com>
Date: Wed, 28 Sep 2022 17:46:16 +1000
Subject: [PATCH] Fixed ToolTip index to be one-based again.

---
 source/script2.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/script2.cpp b/source/script2.cpp
index 2bf3a7799..151b54f72 100644
--- a/source/script2.cpp
+++ b/source/script2.cpp
@@ -1109,7 +1109,7 @@ bif_impl FResult MsgBox(optl<StrArg> aText, optl<StrArg> aTitle, optl<StrArg> aO
 
 bif_impl FResult ToolTip(optl<StrArg> aText, optl<int> aX, optl<int> aY, optl<int> aIndex, UINT_PTR &aRetVal)
 {
-	int window_index = aIndex.value_or(0);
+	int window_index = aIndex.value_or(1) - 1;
 	if (window_index < 0 || window_index >= MAX_TOOLTIPS)
 		return FR_E_ARG(3);