diff --git a/sane/DlgPage.cpp b/sane/DlgPage.cpp
index b8f2912..6a58247 100644
--- a/sane/DlgPage.cpp
+++ b/sane/DlgPage.cpp
@@ -1687,7 +1687,8 @@ void dlg_page::hide(void)
 bool dlg_page::refresh(int sn, const SANE_Option_Descriptor* desc, void* cur_val)
 {
 	bool	found = false;
-	int		ind = 0;
+	int		ind = 0, text_ind = 0;
+	wchar_t	cls_name[40] = { 0 };
 
 	sn += dlg_page::dyn_id_base;
 	for (; ind < (int)ctrls_.size(); ++ind)
@@ -1703,9 +1704,79 @@ bool dlg_page::refresh(int sn, const SANE_Option_Descriptor* desc, void* cur_val
 	{
 		if (GetWindowLong(ctrls_[ind], GWL_ID) != sn)
 			break;
+
+		HWND host = ctrls_[ind];
+		GetClassNameW(host, cls_name, _countof(cls_name) - 1);
+		if (IS_COMBOX(cls_name))
+		{
+			if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
+			{
+				SendMessage(host, CB_RESETCONTENT, 0, 0);
+				for (int i = 0; desc->constraint.string_list[i]; ++i)
+				{
+					std::wstring text(local_trans::a2u(desc->constraint.string_list[i], CP_UTF8));
+					SendMessageW(host, CB_ADDSTRING, 0, (LPARAM)text.c_str());
+				}
+			}
+			else if (desc->constraint_type == SANE_CONSTRAINT_WORD_LIST)
+			{
+				SendMessage(host, CB_RESETCONTENT, 0, 0);
+				for (int i = 0; i < desc->constraint.word_list[0]; ++i)
+				{
+					SendMessageW(host, CB_ADDSTRING, 0, (LPARAM)std::to_wstring(desc->constraint.word_list[1 + i]).c_str());
+				}
+			}
+		}
+		else if (IS_TRACKBAR(cls_name))
+		{
+			if (desc->constraint_type == SANE_CONSTRAINT_RANGE)
+			{
+				if (desc->type == SANE_TYPE_FIXED)
+				{
+					double lower = SANE_UNFIX(desc->constraint.range->min),
+							upper = SANE_UNFIX(desc->constraint.range->max);
+					SendMessage(host, TBM_SETRANGEMIN, 1, (LPARAM)int(lower * 100.0f + .5f));
+					SendMessage(host, TBM_SETRANGEMAX, 1, (LPARAM)int(upper * 100.0f + .5f));
+				}
+				else
+				{
+					int lower = desc->constraint.range->min,
+						upper = desc->constraint.range->max;
+					SendMessage(host, TBM_SETRANGEMIN, 1, (LPARAM)int(lower * 1.0f + .5f));
+					SendMessage(host, TBM_SETRANGEMAX, 1, (LPARAM)int(upper * 1.0f + .5f));
+				}
+
+			}
+		}
+		else if (IS_STATIC_TEXT(cls_name))
+		{
+			if (desc->constraint_type == SANE_CONSTRAINT_RANGE)
+			{
+				if (text_ind == 1)
+				{
+					wchar_t	t[20] = { 0 };
+					if (desc->type == SANE_TYPE_FIXED)
+						swprintf_s(t, _countof(t) - 1, L"%.2f", SANE_UNFIX(desc->constraint.range->min));
+					else
+						swprintf_s(t, _countof(t) - 1, L"%d", desc->constraint.range->min);
+					SetWindowTextW(host, t);
+				}
+				else if(text_ind == 2)
+				{
+					wchar_t	t[20] = { 0 };
+					if (desc->type == SANE_TYPE_FIXED)
+						swprintf_s(t, _countof(t) - 1, L"%.2f", SANE_UNFIX(desc->constraint.range->max));
+					else
+						swprintf_s(t, _countof(t) - 1, L"%d", desc->constraint.range->max);
+					SetWindowTextW(host, t);
+				}
+			}
+			text_ind++;
+		}
+
 		set_ctrl_value(ctrls_[ind], desc->type, cur_val, true);
 		EnableWindow(ctrls_[ind], (desc->cap & SANE_CAP_INACTIVE) != SANE_CAP_INACTIVE);
-		HWND	host = (HWND)GetPropW(ctrls_[ind], dlg_page::property_host.c_str());
+		host = (HWND)GetPropW(ctrls_[ind], dlg_page::property_host.c_str());
 		if (IsWindow(host))
 		{
 			BOOL checked = SendMessage(host, BM_GETCHECK, 0, 0) == BST_CHECKED;