Windows 系统调用.COM.微软语言引擎简单应用（C#）

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 
           const int SpFlags = 1; //SpeechVoiceSpeakFlags.SVSFlagsAsyn
           object _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);
           }
   
   private void 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 DictionaryEntry[TokensCount];
                           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[i] = 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.SpFileStream
                           object oSpVoice = CreateComObject("SAPI.SpVoice"); //创建 SAPI.SpVoice
   
                           
                           try
                           {
                               CallComMethod("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 Speak
   
                               CallComMethod("WaitUntilDone", oSpVoice, Timeout.Infinite); //等
                               CallComMethod("Close", oSpFileStream); //关闭流
   
                               MessageBox.Show("保存成功");
                           }                        
                           finally
                           {
                               Marshal.ReleaseComObject(oSpVoice);
                               Marshal.ReleaseComObject(oSpFileStream);
                           }
   
                           
                           
   
                       }
   
                   }
               }
   
           }
           private void btnSave_Click(object sender, EventArgs e)
           {
   
               try
               {
                   btnSave.Enabled = false;
                   Save();
   
               }
               catch (Exception ex)
               {
                   MessageBox.Show(ex.Message);
               }
               finally
               {
                   btnSave.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
           /// <summary>
           /// 设置属性
           /// </summary>
           /// <param name="name"></param>
           /// <param name="o"></param>
           /// <param name="vlaue"></param>
           private static void SetComProperty(string name, object o, object vlaue)
           {
               Type t = o.GetType();
               t.InvokeMember(name, BindingFlags.Instance | BindingFlags.SetProperty, null, o, new object[] { vlaue });
           }
           /// <summary>
           /// 取得属性
           /// </summary>
           /// <param name="name"></param>
           /// <param name="o"></param>
           /// <returns></returns>
           private static object GetComPropery(string name, object o)
           {
               Type t = o.GetType();
               return t.InvokeMember(name, BindingFlags.Instance | BindingFlags.GetProperty, null, o, null);
           }
           /// <summary>
           /// 调用方法函授
           /// </summary>
           /// <param name="name"></param>
           /// <param name="o"></param>
           /// <param name="parms"></param>
           /// <returns></returns>
           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);
           }
           /// <summary>
           /// 创建 com 对象
           /// </summary>
           /// <param name="FromProgID"></param>
           /// <returns></returns>
           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(object sender, EventArgs e)
           {
               //释放com对象
               Marshal.ReleaseComObject(_spVoiceCls);
   
           }
   
   
   

说明

关于 SAPI 对象的具体情参考，msdn Microsoft Speech SDK 部分是英文的帮助（VS2003 和 VS2005 的都有，ms 网站上好像也有），我英文也不好没法翻译抱歉，我用的这些函数有的是在 ms 网站上看到的有的是自己用对象浏览器慢慢找的....