Windows 系统调用.COM.微软语言引擎简单应用(C#).doc

Windows 系统调用.COM.微软语言引擎简单应用（C#）本文主要讲述，如何调用微软的语言引擎.应用场景如看图识字软件等等.(我可不是作语言软件的、这个子是做着玩的)涉及技术动态调用Com对象（全反射、没有引用com ocx）取得系统存在的各种语言引擎使用引擎进行朗读使用引擎进行保存声音程序图列: 主要功能描述 1. 实列变量等，构造函授等取得所有的 识别对象模块集合，放入下拉框代码object _spVoiceCls =null; /保存朗读用的 SAPI.SpVoice constint SpFlags =1; /SpeechVoiceSpeakFlags.SVSFlagsAsynobject _oISpeechObjectTokens =null; /保存 SAPI.ISpeechObjectTokens 就是系统有的语音引擎集合int TokensCount =0; / 语音引擎集合 数DictionaryEntry _deTokens=null; /榜定下拉框用的public MainForm()InitializeComponent();this.HandleDestroyed +=new EventHandler(Form1_HandleDestroyed);privatevoid Form1_Load(object sender, EventArgs e)InitSAPI(); 2. 系统事件:程序加载取得所有的 识别对象模块集合，放入下拉框代码void InitSAPI()/创建语音对象朗读用_spVoiceCls = CreateComObject(SAPI.SpVoice);if (_spVoiceCls = null)MessageBox.Show(您的系统没有,微软语音组件);Application.Exit();else/取得所有的 识别对象模块集合_oISpeechObjectTokens = CallComMethod(GetVoices, _spVoiceCls); /取得SAPI.ISpeechObjectTokens/识别对象集合 Count;object r = GetComPropery(Count, _oISpeechObjectTokens);if (r is int)TokensCount = (int)r;if (TokensCount 0)/取得全部语音识别对象模块，及名称，以被以后使用_deTokens = new DictionaryEntryTokensCount;for (int i = 0; i TokensCount; i+)/从集合中取出单个 识别对象模块object oSpObjectToken = CallComMethod(Item, _oISpeechObjectTokens, i); /返回 SAPI.SpObjectToken/取名称string Description = CallComMethod(GetDescription, oSpObjectToken) as string;/放到 DictionaryEntry 对象中，key 是 识别对象模块，value 是名称_deTokens= new DictionaryEntry(oSpObjectToken, Description);/邦定到 下拉框cboxTokens.DisplayMember = Value;cboxTokens.ValueMember = Key;cboxTokens.DataSource = _deTokens;cboxTokens.SelectedIndex = 0; 3. 用户事件:朗读朗读输入的文本信息代码private void btnSynthesis_Click(object sender, EventArgs e)string msg = rTxtMsg.Text.Trim();if (msg.Length != 0)if (_spVoiceCls != null)/设置语言引擎SetComProperty(Voice, _spVoiceCls, cboxTokens.SelectedValue);/调用Speak 函数，msg 是要播放的文本，1 是异步播放,因为是异步的 com 对象不立刻释放CallComMethod(Speak, _spVoiceCls, msg, SpFlags); 4. 用户事件:保存声音将输入的文本信息生成音频文件保存到文件代码private void Save()string msg = rTxtMsg.Text.Trim();if (msg.Length != 0)using (SaveFileDialog sfd = new SaveFileDialog()sfd.Filter = wav 文件 (*.wav)|*.wav;sfd.RestoreDirectory = true;if (sfd.ShowDialog() = DialogResult.OK)/*Enum SpeechStreamFileMode;SSFMOpenForRead = 0;SSFMOpenReadWrite = 1;SSFMCreate = 2;SSFMCreateForWrite = 3;*/int SpFileMode = 3;/ SpeechStreamFileMode.SSFMCreateForWrite object oSpFileStream = CreateComObject(SAPI.SpFileStream); /创建 SAPI.SpFileStreamobject oSpVoice = CreateComObject(SAPI.SpVoice); /创建 SAPI.SpVoicetryCallComMethod(Open, oSpFileStream, sfd.FileName, SpFileMode, false); /打开流SetComProperty(Voice, oSpVoice, cboxTokens.SelectedValue); /设置 Voice 属性，让谁朗读SetComProperty(AudioOutputStream, oSpVoice, oSpFileStream); /设置流CallComMethod(Speak, oSpVoice, msg, SpFlags); /调用 SpeakCallComMethod(WaitUntilDone, oSpVoice, Timeout.Infinite); /等CallComMethod(Close, oSpFileStream); /关闭流MessageBox.Show(保存成功); finallyMarshal.ReleaseComObject(oSpVoice);Marshal.ReleaseComObject(oSpFileStream);private void btnSave_Click(object sender, EventArgs e)trybtnSave.Enabled = false;Save();catch (Exception ex)MessageBox.Show(ex.Message);finallybtnSave.Enabled = true; 5. 调用com组件，功能函数自己写的一些帮助函数可以方便调用反射，要不太郁闷（如果是VB 就不用如此费尽了）#region 调用com组件，功能通用函数/ / 设置属性/ / / / private static void SetComProperty(string name, object o, object vlaue)Type t = o.GetType();t.InvokeMember(name, BindingFlags.Instance | BindingFlags.SetProperty, null, o, newobject vlaue );/ / 取得属性/ / / / private static object GetComPropery(string name, object o)Type t = o.GetType();return t.InvokeMember(name, BindingFlags.Instance | BindingFlags.GetProperty, null, o, null);/ / 调用方法函授/ / / / / private static object CallComMethod(string name, object o, params object parms)Type t = o.GetType();return t.InvokeMember(name, BindingFlags.Instance | BindingFlags.InvokeMethod, null, o, parms);/ / 创建 com 对象/ / / private static object CreateComObject(string FromProgID)Type comType = Type.GetTypeFromProgID(FromProgID);object rVar = null;if (comType != null)rVar = System.Activator.CreateInstance(comType);return rVar;#endregion 6. 释放com对象很简单的就一行即可代码void Form1_HandleDestroyed