From 572780ed6d727bfdf0d5d6fc2ef1edbffddc356d Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 10 Nov 2019 19:09:38 +0900
Subject: [PATCH] uidriver/glfw: Bug fix: errors are ignored at
 (*UserInterface).run

Updates #978
---
 internal/uidriver/glfw/ui.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/internal/uidriver/glfw/ui.go b/internal/uidriver/glfw/ui.go
index 815075626..2b2fe9d9d 100644
--- a/internal/uidriver/glfw/ui.go
+++ b/internal/uidriver/glfw/ui.go
@@ -586,7 +586,7 @@ func (u *UserInterface) RunWithoutMainLoop(width, height int, scale float64, tit
 }
 
 func (u *UserInterface) run(width, height int, scale float64, title string, context driver.UIContext) error {
-	_ = u.t.Call(func() error {
+	if err := u.t.Call(func() error {
 		if u.graphics.IsGL() {
 			glfw.WindowHint(glfw.ContextVersionMajor, 2)
 			glfw.WindowHint(glfw.ContextVersionMinor, 1)
@@ -682,7 +682,9 @@ func (u *UserInterface) run(width, height int, scale float64, title string, cont
 			u.reqHeight = h
 		})
 		return nil
-	})
+	}); err != nil {
+		return err
+	}
 
 	var w uintptr
 	_ = u.t.Call(func() error {