diff --git a/code/base/base.h b/code/base/base.h
index 9a5d733..73d7123 100644
--- a/code/base/base.h
+++ b/code/base/base.h
@@ -129,4 +129,205 @@ DECL_API(int) func_test_go(const wchar_t* name				// test name
 						, ui_helper* helper);
 
 // Function:	uninitialize module
-DECL_API(int) func_test_uninit(void*);
\ No newline at end of file
+DECL_API(int) func_test_uninit(void*);
+
+
+
+//////////////////////////////////////////////////////////////////////////////////////////////////
+/*/ testing-DLL load code ...
+#include <vector>
+#include <string>
+#include <algorithm>
+#include <Windows.h>
+
+class json : public ref
+{
+public:
+	json();
+
+protected:
+	~json();
+
+public:
+	bool attach(const wchar_t* text);
+	bool get_value(const wchar_t* key, int& val);
+	bool get_value(const wchar_t* key, std::wstring& val);
+	bool get_value(const wchar_t* key, json*& val);
+};
+
+class test_factory
+{
+	typedef struct _test_func
+	{
+		std::wstring	name;
+		int				ver;
+		int(__stdcall*	test_api)(const wchar_t*, const wchar_t*, ui_helper*);
+
+		struct _test_func()
+		{
+			name = L"";
+			ver = 0;
+			test_api = NULL;
+		}
+		bool operator==(const wchar_t* n)
+		{
+			return name == n;
+		}
+	}TESTFUNC, *LPTESTFUNC;
+	std::vector<TESTFUNC>	test_;
+
+	void add_api(const wchar_t* name, int ver, int(__stdcall* test_api)(const wchar_t*, const wchar_t*, ui_helper*))
+	{
+		std::vector<TESTFUNC>::iterator it = std::find(test_.begin(), test_.end(), name);
+
+		if (it == test_.end())
+		{
+			TESTFUNC	tf;
+
+			tf.name = name;
+			tf.ver = ver;
+			tf.test_api = test_api;
+			test_.push_back(tf);
+		}
+		else if (ver > it->ver)
+		{
+			it->test_api = test_api;
+			it->ver = ver;
+		}
+	}
+	void load_test_dll(const wchar_t* path_dll)
+	{
+		HMODULE	mod = LoadLibraryW(path_dll);
+		int(__stdcall * init)(void*) = NULL;
+		int(__stdcall * get)(void*, size_t*) = NULL;
+		int(__stdcall * go)(const wchar_t*, const wchar_t*, ui_helper*) = NULL;
+		FARPROC* api = (FARPROC*)&init;
+		wchar_t* buf = NULL;
+		size_t	len = 0;
+		json* root = NULL, * child = NULL;
+	
+		if (!mod)
+			return;
+
+		*api = GetProcAddress(mod, "func_test_init");
+		if (!api)
+		{
+			FreeLibrary(mod);
+			return;
+		}
+		init(NULL);
+
+		api = (FARPROC*)&get;
+		*api = GetProcAddress(mod, "func_test_get_list");
+		if(!api)
+		{
+			FreeLibrary(mod);
+			return;
+		}
+
+		api = (FARPROC*)&go;
+		*api = GetProcAddress(mod, "func_test_go");
+		if (!api)
+		{
+			FreeLibrary(mod);
+			return;
+		}
+
+		if(get(buf, &len) != ERROR_INSUFFICIENT_BUFFER)
+		{
+			FreeLibrary(mod);
+			return;
+		}
+
+		buf = new wchar_t[len + 8];
+		memset(buf, 0, (len + 8) * 2);
+		if (get(buf, &len))
+		{
+			delete[] buf;
+			FreeLibrary(mod);
+			return;
+		}
+
+		// parse json ...
+		len = 0;
+		root = new json();
+		if (root->attach(buf))
+		{
+			for (int i = 1; 1; ++i)
+			{
+				swprintf_s(buf, 20, L"%d", i);
+				if (!root->get_value(buf, child) || !child)
+					break;
+
+				std::wstring	name(L"");
+				int				ver = 0;
+				if (child->get_value(L"name", name) && child->get_value(L"ver", ver))
+				{
+					add_api(name.c_str(), ver, go);
+					len++;
+				}
+				child->release();
+			}
+		}
+
+		root->release();
+		delete[] buf;
+		if (len == 0)
+			FreeLibrary(mod);
+	}
+	void init(void)
+	{
+		wchar_t			path[MAX_PATH] = { 0 };
+		std::wstring	dir(L"");
+		size_t			pos = 0;
+		HANDLE			hf = INVALID_HANDLE_VALUE;
+		WIN32_FIND_DATAW	fd = { 0 };
+
+		GetModuleFileNameW(NULL, path, _countof(path) - 1);
+		dir = pos;
+		pos = dir.rfind(L'\\');
+		if (pos++ == std::wstring::npos)
+			return;
+
+		dir.erase(pos);
+		dir += L"dlls\\";
+		hf = FindFirstFileW((dir + L"*.dll").c_str(), &fd);
+		if (hf != INVALID_HANDLE_VALUE)
+		{
+			do
+			{
+				load_test_dll((dir + fd.cFileName).c_str());
+			} while (FindNextFileW(hf, &fd));
+
+			FindClose(hf);
+		}
+	}
+
+public:
+	test_factory()
+	{
+		init();
+	}
+	~test_factory()
+	{
+
+	}
+
+public:
+	bool is_test_available(const wchar_t* name)	// check if the test item with name 'name' is supported
+	{
+		std::vector<TESTFUNC>::iterator it = std::find(test_.begin(), test_.end(), name);
+
+		return it != test_.end();
+	}
+	int test(const wchar_t* name, ui_helper* ui, const wchar_t* oper = L"start")
+	{
+		std::vector<TESTFUNC>::iterator it = std::find(test_.begin(), test_.end(), name);
+
+		if (it == test_.end())
+			return ERROR_NOT_SUPPORTED;
+
+		return it->test_api(name, oper, ui);
+	}
+};
+/////////////////////////*////////////////////////////////////////////////////////////////////////
\ No newline at end of file