void AppFactory::ShowError(bool is_fatal, const char *err_msg, ...)
{
	va_list argList;
	va_start(argList, err_msg);
#if AUX__WINDOWS
	char buf[4096]; // 4 kb
	StringCchVPrintf(buf, sizeof(buf), err_msg, argList);
	MessageBox(NULL, err_msg, "Error", MB_OK|MB_APPLMODAL|MB_SETFOREGROUND|MB_TOPMOST|MB_ICONERROR);
#endif
	vprintf(err_msg, argList);
	printf("\n");
	va_end(argList);
	if (is_fatal)
	{
		Debug::MiniDump::WriteMinidump();
		abort();
	}
}