我正在研究以下C ++ / cli代码：
#pragma once
namespace SpeechTest {
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
using namespace System::Speech::Synthesis;
using namespace System::Speech::Recognition;
using namespace System::Speech::AudioFormat;
/// <summary>
/// Summary for Form1
/// </summary>
public ref class Form1 : public System::Windows::Forms::Form
{
public:
Form1(void)
{
InitializeComponent();
//
//TODO: Add the constructor code here
//
}
protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~Form1()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::Button^ button1;
private: System::Windows::Forms::Button^ button2;
private: System::Windows::Forms::RichTextBox^ richTextBox1;
private: System::Windows::Forms::Button^ button3;
protected:
private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;
#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->button1 = (gcnew System::Windows::Forms::Button());
this->button2 = (gcnew System::Windows::Forms::Button());
this->richTextBox1 = (gcnew System::Windows::Forms::RichTextBox());
this->button3 = (gcnew System::Windows::Forms::Button());
this->SuspendLayout();
//
// button1
//
this->button1->Location = System::Drawing::Point(31, 28);
this->button1->Name = L"button1";
this->button1->Size = System::Drawing::Size(75, 23);
this->button1->TabIndex = 0;
this->button1->Text = L"speech";
this->button1->UseVisualStyleBackColor = true;
this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
//
// button2
//
this->button2->Location = System::Drawing::Point(112, 28);
this->button2->Name = L"button2";
this->button2->Size = System::Drawing::Size(75, 23);
this->button2->TabIndex = 1;
this->button2->Text = L"text";
this->button2->UseVisualStyleBackColor = true;
this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
//
// richTextBox1
//
this->richTextBox1->Location = System::Drawing::Point(31, 92);
this->richTextBox1->Name = L"richTextBox1";
this->richTextBox1->Size = System::Drawing::Size(230, 120);
this->richTextBox1->TabIndex = 2;
this->richTextBox1->Text = L"";
//
// button3
//
this->button3->Location = System::Drawing::Point(197, 28);
this->button3->Name = L"button3";
this->button3->Size = System::Drawing::Size(75, 23);
this->button3->TabIndex = 3;
this->button3->Text = L"button3";
this->button3->UseVisualStyleBackColor = true;
this->button3->Click += gcnew System::EventHandler(this, &Form1::button3_Click);
//
// Form1
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(284, 262);
this->Controls->Add(this->button3);
this->Controls->Add(this->richTextBox1);
this->Controls->Add(this->button2);
this->Controls->Add(this->button1);
this->Name = L"Form1";
this->Text = L"Form1";
this->ResumeLayout(false);
}
#pragma endregion
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
SpeechSynthesizer synth;
synth.Rate = -2;
synth.Volume = 100;
synth.Speak("what is happening right now?");
}
private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) {
}
private: System::Void button3_Click(System::Object^ sender, System::EventArgs^ e)
{
SpeechRecognizer sr;
array<String>^ words = gcnew array<String>(3);
words[0] = "red";
words[1] = "green";
words[2] = "red";
Choices colors;
colors.Add(words);
GrammarBuilder gb;
gb.Append(colors);
Grammar g(gb);
sr.LoadGrammar(g);
System::IntPtr ptr = gcnew System::IntPtr(&sr_SpeechRecognized);
sr.SpeechRecognized += gcnew System::EventHandler(this,ptr);
}
void sr_SpeechRecognized(System::Object ^sender, SpeechRecognizedEventArgs^ e)
{
}
};
}
我发布了整个代码，以使读者可以知道行号以寻求帮助。运行此C ++ / CLI代码时，出现很多错误，无法解决：
1>------ Build started: Project: SpeechTest, Configuration: Debug Win32 ------
1> SpeechTest.cpp
1>c:\users\yohan\documents\visual studio 2010\projects\speechtest\speechtest\Form1.h(132): error C3149: 'System::String' : cannot use this type here without a top-level '^'
1>c:\users\yohan\documents\visual studio 2010\projects\speechtest\speechtest\Form1.h(132): error C3149: 'System::String' : cannot use this type here without a top-level '^'
1>c:\users\yohan\documents\visual studio 2010\projects\speechtest\speechtest\Form1.h(141): error C2664: 'void System::Speech::Recognition::GrammarBuilder::Append(System::String ^)' : cannot convert parameter 1 from 'System::Speech::Recognition::Choices' to 'System::String ^'
1> No user-defined-conversion operator available, or
1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
1>c:\users\yohan\documents\visual studio 2010\projects\speechtest\speechtest\Form1.h(143): error C2664: 'System::Speech::Recognition::Grammar::Grammar(System::String ^)' : cannot convert parameter 1 from 'System::Speech::Recognition::GrammarBuilder' to 'System::String ^'
1> No user-defined-conversion operator available, or
1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
1>c:\users\yohan\documents\visual studio 2010\projects\speechtest\speechtest\Form1.h(145): error C2664: 'System::Speech::Recognition::SpeechRecognizer::LoadGrammar' : cannot convert parameter 1 from 'System::Speech::Recognition::Grammar' to 'System::Speech::Recognition::Grammar ^'
1> No user-defined-conversion operator available, or
1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
1>c:\users\yohan\documents\visual studio 2010\projects\speechtest\speechtest\Form1.h(147): error C2276: '&' : illegal operation on bound member function expression
1>c:\users\yohan\documents\visual studio 2010\projects\speechtest\speechtest\Form1.h(147): fatal error C1903: unable to recover from previous error(s); stopping compilation
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
所有这些错误均指的是以下摘录自上面的代码段
private: System::Void button3_Click(System::Object^ sender, System::EventArgs^ e)
{
SpeechRecognizer sr;
array<String>^ words = gcnew array<String>(3);
words[0] = "red";
words[1] = "green";
words[2] = "red";
Choices colors;
colors.Add(words);
GrammarBuilder gb;
gb.Append(colors);
Grammar g(gb);
sr.LoadGrammar(g);
System::IntPtr ptr = gcnew System::IntPtr(&sr_SpeechRecognized);
sr.SpeechRecognized += gcnew System::EventHandler(this,ptr);
}
void sr_SpeechRecognized(System::Object ^sender, SpeechRecognizedEventArgs^ e)
{
}
为什么会出现这些错误？
我认为您应该在函数开始时将其设为SpeechRecognizer^。不要忘记gcnew。
[不知道Choices之类的类型很难。但是，words数组应像这样使用：
array<String^>^ words = gcnew array<String^>(3);
words[0] = "red";
words[1] = "green";
words[2] = "red";
此外，GrammarBuilder.Append似乎期望使用String^，但是您用Choices来调用它。类似，您需要修复Grammar构造函数的用法（需要String^而不是GrammarBuilder）a.s.o。
首先，您需要添加对项目System::Speech的引用，然后使用下一个名称空间：
using namespace System::Speech::Synthesis;
using namespace System::Speech::Recognition;
using namespace System::Speech::AudioFormat;
//you put a C# code instead of C++/Cli, try this:
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
SpeechSynthesizer^ synth=gcnew SpeechSynthesizer();
synth->Rate = -2;
synth->Volume = 100;
synth->Speak("She say: This is real C++/Cli");
}
这是第一个按钮的解决方案，现在尝试解决下一个语法。祝好运！ ：）