From 01212c568407d752c42443c582914bb6dbab856c Mon Sep 17 00:00:00 2001
From: vcaesar <vzvway@gmail.com>
Date: Mon, 27 Feb 2023 09:49:26 -0800
Subject: [PATCH] Fixed: fixed code and CI

---
 robotgo_win.go | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/robotgo_win.go b/robotgo_win.go
index b803145..d2208bc 100644
--- a/robotgo_win.go
+++ b/robotgo_win.go
@@ -71,14 +71,16 @@ func GetMainId() int {
 // if "displayId == -2" this function will get the desktop scale value
 func ScaleF(displayId ...int) (f float64) {
 	if len(displayId) > 0 && displayId[0] != -1 {
-		dpi := GetDPI(win.HWND(displayId[0]))
-		f = float64(dpi) / 96.0
-	} else {
-		if displayId == -2 {
-			f = float64(GetDPI(GetDesktopWindow())) / 96.0
-		} else {
-			f = float64(GetMainDPI()) / 96.0
+		if displayId[0] >= 0 {
+			dpi := GetDPI(win.HWND(displayId[0]))
+			f = float64(dpi) / 96.0
 		}
+
+		if displayId[0] == -2 {
+			f = float64(GetDPI(GetDesktopWindow())) / 96.0
+		}
+	} else {
+		f = float64(GetMainDPI()) / 96.0
 	}
 
 	if f == 0.0 {