From 3075eccacfce001dd8af35d4f64719de8f60f39e Mon Sep 17 00:00:00 2001
From: Jinhao <cnjinhao@hotmail.com>
Date: Tue, 26 Jun 2018 08:06:43 +0800
Subject: [PATCH] fix bug that folderbox returns an emtpy path

---
 source/gui/filebox.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/gui/filebox.cpp b/source/gui/filebox.cpp
index 163ba3cf..f902f98f 100644
--- a/source/gui/filebox.cpp
+++ b/source/gui/filebox.cpp
@@ -1224,7 +1224,7 @@ namespace nana
 	std::optional<folderbox::path_type> folderbox::show() const
 	{
 #ifdef NANA_WINDOWS
-		path_type target;
+		std::optional<folderbox::path_type> target;
 
 		CoInitialize(NULL);
 		IFileDialog *fd(nullptr);
@@ -1246,7 +1246,7 @@ namespace nana
 				hr = si->GetDisplayName(SIGDN_FILESYSPATH, &pwstr);
 				if (SUCCEEDED(hr))
 				{
-					target = pwstr;
+					target = path_type{ pwstr };
 					// use the c-string pointed to by pwstr here
 					CoTaskMemFree(pwstr);
 				}