Windows 系统调用.COM.微软语言引擎简单应用（C#）

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();

}

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;
}

}

}

}

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);

}
}

}

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;
}

}

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

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....