From 11dbe9344eff982dc69072218c940348873d13f1 Mon Sep 17 00:00:00 2001
From: jiajia_deng <2894220@gmail.com>
Date: Thu, 30 May 2019 10:51:38 +0800
Subject: [PATCH] Fixed #27 crashed when DPI changes

Signed-off-by: jiajia_deng <2894220@gmail.com>
---
 tool_kits/duilib/Utils/Shadow.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/tool_kits/duilib/Utils/Shadow.cpp b/tool_kits/duilib/Utils/Shadow.cpp
index 24fc68cd..2ea36246 100644
--- a/tool_kits/duilib/Utils/Shadow.cpp
+++ b/tool_kits/duilib/Utils/Shadow.cpp
@@ -58,10 +58,12 @@ UiRect Shadow::GetShadowCorner() const
 
 void Shadow::ResetShadowBox()
 {
-	auto rcTempShadowCorner = m_rcDefaultShadowCorner;
-	DpiManager::GetInstance()->ScaleRect(rcTempShadowCorner);
-	m_rcShadowCornerBackup = m_rcCurShadowCorner = rcTempShadowCorner;
-	m_pRoot->GetLayout()->SetPadding(m_rcDefaultShadowCorner);
+	if (m_bShadowAttached && m_pRoot) {
+		auto rcTempShadowCorner = m_rcDefaultShadowCorner;
+		DpiManager::GetInstance()->ScaleRect(rcTempShadowCorner);
+		m_rcShadowCornerBackup = m_rcCurShadowCorner = rcTempShadowCorner;
+		m_pRoot->GetLayout()->SetPadding(m_rcDefaultShadowCorner);
+	}
 }
 
 Box*Shadow::AttachShadow(Box* pRoot)