From 925adc0782c4dd9b978a712b1b5645b5f31bf802 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Sun, 12 Aug 2018 11:07:33 -0400
Subject: Fixed build errors.

---
 spinbox.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'spinbox.go')

diff --git a/spinbox.go b/spinbox.go
index a1dfc3b..27dd287 100644
--- a/spinbox.go
+++ b/spinbox.go
@@ -8,6 +8,8 @@ import (
 
 // #include "ui.h"
 // extern void doSpinboxOnChanged(uiSpinbox *, void *);
+// // see golang/go#19835
+// typedef void (*spinboxCallback)(uiSpinbox *, void *);
 import "C"
 
 // Spinbox is a Control that represents a space where the user can
@@ -25,7 +27,7 @@ func NewSpinbox(min int, max int) *Spinbox {
 
 	s.s = C.uiNewSpinbox(C.int(min), C.int(max))
 
-	C.uiSpinboxOnChanged(s.s, C.doSpinboxOnChanged, nil)
+	C.uiSpinboxOnChanged(s.s, C.spinboxCallback(C.doSpinboxOnChanged), nil)
 
 	s.ControlBase = NewControlBase(s, uintptr(unsafe.Pointer(s.s)))
 	return s
-- 
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