diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 791e2ef..084a24f 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -776,7 +776,7 @@ static const SCANNERID scanner_guid = MAKE_SCANNER_ID(PRODUCT_PID, PRODUCT_VID);
 
 static std::once_flag oc;
 huagao_ds::huagao_ds() : cur_head_(NULL), dpi_(200), xfer_ready_failed_(false), log_all_triple_(false), scanner_status_(SCANNER_STATUS_NOT_INIT)
-						,count_(-1), bUiOnly_(false), is_getting_count_(false)
+						,count_(-1), bUiOnly_(false), is_getting_count_(false), show_setting_(false)
 {
 	//std::call_once(oc, [&]() { log4cplus::Initializer(); });
 }
@@ -1101,6 +1101,7 @@ Result huagao_ds::userInterfaceDisable(const Identity&, UserInterface& ui)
 Result huagao_ds::userInterfaceEnable(const Identity&, UserInterface& ui)
 {
 	bUiOnly_ = false;
+	show_setting_ = false;
 	if (!ui.showUi())
 	{
 		scanner_->ui_show_progress((HWND)ui.parent().raw(), m_bIndicator);
@@ -1683,6 +1684,7 @@ Result huagao_ds::capCommon(const Identity&, Msg msg, Capability& data) {
 }
 Twpp::Result huagao_ds::showTwainUI(Twpp::UserInterface& data, bool bUiOnly)
 {
+	show_setting_ = true;
 	bUiOnly_ = bUiOnly;
 	// display user UI ... (setting UI, can we show my own main window here ?)
 	return scanner_->ui_show_setting((HWND)data.parent().raw(), !bUiOnly, m_bIndicator) ? success() : seqError();
@@ -3583,6 +3585,7 @@ int huagao_ds::handle_scanner_event(int ev, bool from_event_proc)
 			}
 			rc = notifyCloseCancel();
 		}
+		show_setting_ = false;
 		break;
 	case SANE_EVENT_UI_CLOSE_CANCEL:
 		scanner_->stop();
@@ -3590,7 +3593,10 @@ int huagao_ds::handle_scanner_event(int ev, bool from_event_proc)
 		//break;
 	case SANE_EVENT_UI_CLOSE_NORMAL:
 	case SANE_EVENT_SCAN_FINISHED:
+		scanner_->ui_hide();
 		scanner_status_ = SCANNER_STATUS_STOPPED;	// notifyCloseCancel is not need, because it done in EndXfer
+		if(show_setting_)
+			notifyCloseCancel();
 		//notifyCloseOk();
 		//break;
 		break;
diff --git a/twain/twain/huagaods.hpp b/twain/twain/huagaods.hpp
index 66a4167..97363f7 100644
--- a/twain/twain/huagaods.hpp
+++ b/twain/twain/huagaods.hpp
@@ -55,6 +55,7 @@ class huagao_ds : public Twpp::SourceFromThis<huagao_ds> {
     bool            log_all_triple_;
     bool            app_trigger_event_;
     bool            bUiOnly_;
+    bool            show_setting_;
     int             count_;
     volatile bool   is_getting_count_;
     static std::string get_hidedlg_path(void);