diff --git a/sane/DlgCfgMgr.cpp b/sane/DlgCfgMgr.cpp
index 5b35962..a1b98e6 100644
--- a/sane/DlgCfgMgr.cpp
+++ b/sane/DlgCfgMgr.cpp
@@ -9,7 +9,7 @@
 
 // CDlgIndicator 对话框
 
-dlg_cfg_mgr::dlg_cfg_mgr(gb::scanner_cfg* cfg, HWND parent) : cfg_(cfg), dlg_base(parent, IDD_CFG_MGR)
+dlg_cfg_mgr::dlg_cfg_mgr(gb::scanner_cfg* cfg, HWND parent) : cfg_(cfg), dlg_base(parent, IDD_CFG_MGR), schm_changed_(false)
 {
 	create();
 	
@@ -199,10 +199,17 @@ void dlg_cfg_mgr::on_del_selected(void)
 		{
 			changed = true;
 			ListView_DeleteItem(lwnd, sels[i]);
+			schm_changed_ = true;
 		}
 	}
 }
 void dlg_cfg_mgr::on_del_all(void)
 {
 	cfg_->remove_all_schemes();
+	ListView_DeleteAllItems(get_item(IDC_LIST1));
+	schm_changed_ = true;
+}
+bool dlg_cfg_mgr::is_scheme_changed(void)
+{
+	return schm_changed_;
 }
diff --git a/sane/DlgCfgMgr.h b/sane/DlgCfgMgr.h
index 04accf3..6262fce 100644
--- a/sane/DlgCfgMgr.h
+++ b/sane/DlgCfgMgr.h
@@ -15,6 +15,7 @@ class dlg_cfg_mgr: public dlg_base
 {
 	gb::scanner_cfg*	cfg_;
 	std::wstring		label_;
+	bool				schm_changed_;
 
 	BOOL handle_message(UINT msg, WPARAM wp, LPARAM lp) override;
 	void handle_command(WORD code, WORD id, HANDLE ctrl);
@@ -32,4 +33,5 @@ public:
 	~dlg_cfg_mgr();
 
 public:
+	bool is_scheme_changed(void);
 };
diff --git a/sane/DlgSetting.cpp b/sane/DlgSetting.cpp
index 645574d..e894500 100644
--- a/sane/DlgSetting.cpp
+++ b/sane/DlgSetting.cpp
@@ -130,6 +130,7 @@ void dlg_setting::handle_command(WORD code, WORD id, HANDLE ctrl)
 					}
 					n->release();
 				}
+				s->end_setting(true);
 				s->release();
 			}
 		}
@@ -143,7 +144,7 @@ void dlg_setting::handle_command(WORD code, WORD id, HANDLE ctrl)
 				gb::sane_config_schm* s = cfg_->get_scheme();
 				if (s)
 				{
-					s->end_setting(true);
+					s->end_setting(false);
 					s->release();
 				}
 
@@ -180,7 +181,7 @@ void dlg_setting::handle_command(WORD code, WORD id, HANDLE ctrl)
 			gb::sane_config_schm* schm = cfg_->get_scheme();
 			if (schm)
 			{
-				schm->end_setting(true);
+				schm->end_setting(false);
 				schm->release();
 			}
 			cfg_->select_scheme(nullptr);
@@ -195,6 +196,14 @@ void dlg_setting::handle_command(WORD code, WORD id, HANDLE ctrl)
 	{
 		dlg_cfg_mgr	dlg(cfg_, hwnd());
 		dlg.do_modal(hwnd());
+		if (dlg.is_scheme_changed())
+		{
+			gb::sane_config_schm* schm = cfg_->get_scheme();
+			apply_scheme_(schm, apply_param_);
+			if (schm)
+				schm->release();
+			refresh_controls(-1);
+		}
 	}
 	else if (id == IDC_BUTTON_CONFIG_MENU)
 	{
diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 6c40107..dc24dd0 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -28,6 +28,8 @@ using namespace std::placeholders;
 
 extern HMODULE me_;
 
+// WIA COM:	IStiUSD & IWiaMiniDrv
+
 //custom define caps enum
 enum CapTypeEx : unsigned short {
 	CAP_TYPE_EX_FILL_BLACK_BKG = 0x8004,