From a40f5f5555c402344672a83696d538f0704762c0 Mon Sep 17 00:00:00 2001
From: "liangtie.qian" <liangtie.qian@cyclone-robotics.com>
Date: Fri, 25 Nov 2022 18:42:58 +0800
Subject: [PATCH] include functional to fix mingw build

---
 src/DockWidget.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/DockWidget.h b/src/DockWidget.h
index abf8766..cfd4c58 100644
--- a/src/DockWidget.h
+++ b/src/DockWidget.h
@@ -1,4 +1,4 @@
-#ifndef DockWidgetH
+#ifndef DockWidgetH
 #define DockWidgetH
 /*******************************************************************************
 ** Qt Advanced Docking System
@@ -31,6 +31,7 @@
 //                                   INCLUDES
 //============================================================================
 #include <QFrame>
+#include <functional>
 
 #include "ads_globals.h"