--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/foobar2000/helpers/AutoComplete.cpp	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,49 @@
+#include "stdafx.h"
+#include "AutoComplete.h"
+#include <ShlGuid.h> // CLSID_AutoComplete
+#include "../helpers/COM_utils.h"
+#include "../helpers/dropdown_helper.h"
+#include <libPPUI/CEnumString.h>
+
+using PP::CEnumString;
+
+namespace {
+	class CACList_History : public CEnumString {
+	public:
+		CACList_History(cfg_dropdown_history_mt * var) : m_var(var) { Reset(); }
+		typedef ImplementCOMRefCounter<CACList_History> TImpl;
+
+		HRESULT STDMETHODCALLTYPE Reset() {
+			/*if (core_api::assert_main_thread())*/ {
+				ResetStrings();
+				pfc::string8 state; m_var->get_state(state);
+				for (const char * walk = state;;) {
+					const char * next = strchr(walk, cfg_dropdown_history_mt::separator);
+					t_size len = (next != NULL) ? next - walk : ~0;
+					AddStringU(walk, len);
+					if (next == NULL) break;
+					walk = next + 1;
+				}
+			}
+			return __super::Reset();
+		}
+
+		HRESULT STDMETHODCALLTYPE Clone(IEnumString **ppenum) {
+			*ppenum = new TImpl(*this); return S_OK;
+		}
+
+	private:
+		cfg_dropdown_history_mt * const m_var;
+	};
+}
+
+HRESULT InitializeDropdownAC(HWND comboBox, cfg_dropdown_history_mt & var, const char * initVal) {
+	var.on_init(comboBox, initVal);
+	COMBOBOXINFO ci = {}; ci.cbSize = sizeof(ci);
+	if (!GetComboBoxInfo(comboBox, &ci)) {
+		PFC_ASSERT(!"Should not get here - GetComboBoxInfo fail!");
+		return E_FAIL;
+	}
+	pfc::com_ptr_t<IUnknown> acl = new CACList_History::TImpl(&var);
+	return InitializeSimpleAC(ci.hwndItem, acl.get_ptr(), ACO_AUTOAPPEND|ACO_AUTOSUGGEST);
+}