從Visual C++ Express 2010中的串行端口讀取

Question

我試圖在Visual C++ Express 2010中創建一個可以與串行端口通信的C++程序。串口等的定義是沒有問題的，但我在我的主程序中引用在我的「表單」中定義的東西時遇到問題。

我有一個主文件，由Visual C++ Express創建和我想引用我的形式「Form1的」創建串口：

Form1::serialPort1.BytesToRead 
Form1::serialPort1->BytesToRead 
serialPort1.BytesToRead 
serialPort1->BytesToRead 

我試圖訪問這些不同的方法串口，前兩個給這個編譯器錯誤：

error C2228: left of '.BytesToRead' must have class/struct/union 
error C2228: left of '->BytesToRead' must have class/struct/union 

，另外兩個給這個：

error C2065: 'serialPort1' : undeclared identifier 

我覺得有什麼明顯的，我在這裏失蹤。如果需要更多信息，請詢問。

謝謝。

這裏的Form1.h文件：

#pragma once 

    namespace avndator { 

using namespace System; 
using namespace System::ComponentModel; 
using namespace System::Collections; 
using namespace System::Windows::Forms; 
using namespace System::Data; 
using namespace System::Drawing; 

/// <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::TextBox^ textBox1; 
protected: 
private: System::Windows::Forms::Label^ label1; 
private: System::Windows::Forms::Label^ label2; 
private: System::Windows::Forms::TextBox^ textBox2; 
private: System::Windows::Forms::Label^ label3; 

private: System::Windows::Forms::Button^ button1; 
private: System::Windows::Forms::Button^ button2; 
private: System::Windows::Forms::Button^ button3; 
private: System::Windows::Forms::Button^ button4; 
private: System::Windows::Forms::Button^ button5; 
private: System::Windows::Forms::Button^ button6; 
private: System::Windows::Forms::Button^ button8; 
private: System::Windows::Forms::PictureBox^ pictureBox1; 
private: System::Windows::Forms::Label^ label4; 
private: System::Windows::Forms::TextBox^ textBox3; 

private: System::Windows::Forms::Label^ label5; 
private: System::Windows::Forms::Button^ button7; 
private: System::Windows::Forms::Button^ button9; 
private: System::Windows::Forms::Label^ label6; 
private: System::Windows::Forms::TextBox^ textBox4; 


private: System::Windows::Forms::Label^ label7; 
private: System::Windows::Forms::Label^ label8; 
private: System::Windows::Forms::TextBox^ textBox5; 
private: System::Windows::Forms::Label^ label9; 
private: System::Windows::Forms::TextBox^ textBox6; 
private: System::Windows::Forms::Label^ label10; 
private: System::Windows::Forms::TextBox^ textBox7; 
private: System::Windows::Forms::Label^ label11; 
private: System::Windows::Forms::TextBox^ textBox8; 
private: System::Windows::Forms::Label^ label12; 
private: System::Windows::Forms::TextBox^ textBox9; 
private: System::IO::Ports::SerialPort^ serialPort1; 


protected: 
private: System::ComponentModel::IContainer^ components; 

private: 
    /// <summary> 
    /// Required designer variable. 
    /// </summary> 


    #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->components = (gcnew System::ComponentModel::Container()); 
     System::ComponentModel::ComponentResourceManager^ resources = (gcnew System::ComponentModel::ComponentResourceManager(Form1::typeid)); 
     this->textBox1 = (gcnew System::Windows::Forms::TextBox()); 
     this->label1 = (gcnew System::Windows::Forms::Label()); 
     this->label2 = (gcnew System::Windows::Forms::Label()); 
     this->textBox2 = (gcnew System::Windows::Forms::TextBox()); 
     this->label3 = (gcnew System::Windows::Forms::Label()); 
     this->button1 = (gcnew System::Windows::Forms::Button()); 
     this->button2 = (gcnew System::Windows::Forms::Button()); 
     this->button3 = (gcnew System::Windows::Forms::Button()); 
     this->button4 = (gcnew System::Windows::Forms::Button()); 
     this->button5 = (gcnew System::Windows::Forms::Button()); 
     this->button6 = (gcnew System::Windows::Forms::Button()); 
     this->button8 = (gcnew System::Windows::Forms::Button()); 
     this->pictureBox1 = (gcnew System::Windows::Forms::PictureBox()); 
     this->label4 = (gcnew System::Windows::Forms::Label()); 
     this->textBox3 = (gcnew System::Windows::Forms::TextBox()); 
     this->label5 = (gcnew System::Windows::Forms::Label()); 
     this->button7 = (gcnew System::Windows::Forms::Button()); 
     this->button9 = (gcnew System::Windows::Forms::Button()); 
     this->label6 = (gcnew System::Windows::Forms::Label()); 
     this->textBox4 = (gcnew System::Windows::Forms::TextBox()); 
     this->label7 = (gcnew System::Windows::Forms::Label()); 
     this->label8 = (gcnew System::Windows::Forms::Label()); 
     this->textBox5 = (gcnew System::Windows::Forms::TextBox()); 
     this->label9 = (gcnew System::Windows::Forms::Label()); 
     this->textBox6 = (gcnew System::Windows::Forms::TextBox()); 
     this->label10 = (gcnew System::Windows::Forms::Label()); 
     this->textBox7 = (gcnew System::Windows::Forms::TextBox()); 
     this->label11 = (gcnew System::Windows::Forms::Label()); 
     this->textBox8 = (gcnew System::Windows::Forms::TextBox()); 
     this->label12 = (gcnew System::Windows::Forms::Label()); 
     this->textBox9 = (gcnew System::Windows::Forms::TextBox()); 
     this->serialPort1 = (gcnew System::IO::Ports::SerialPort(this->components)); 
     (cli::safe_cast<System::ComponentModel::ISupportInitialize^ >(this->pictureBox1))->BeginInit(); 
     this->SuspendLayout(); 
     // 
     // textBox1 
     // 
     this->textBox1->Location = System::Drawing::Point(12, 25); 
     this->textBox1->Multiline = true; 
     this->textBox1->Name = L"textBox1"; 
     this->textBox1->ReadOnly = true; 
     this->textBox1->ScrollBars = System::Windows::Forms::ScrollBars::Vertical; 
     this->textBox1->Size = System::Drawing::Size(242, 126); 
     this->textBox1->TabIndex = 0; 
     this->textBox1->TextChanged += gcnew System::EventHandler(this, &Form1::textBox1_TextChanged); 
     // 
     // label1 
     // 
     this->label1->AutoSize = true; 
     this->label1->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 10, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point, 
      static_cast<System::Byte>(0))); 
     this->label1->Location = System::Drawing::Point(9, 5); 
     this->label1->Name = L"label1"; 
     this->label1->Size = System::Drawing::Size(166, 17); 
     this->label1->TabIndex = 1; 
     this->label1->Text = L"Kommunikationsenhet"; 
     this->label1->Click += gcnew System::EventHandler(this, &Form1::label1_Click); 
     // 
     // label2 
     // 
     this->label2->AutoSize = true; 
     this->label2->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 10, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point, 
      static_cast<System::Byte>(0))); 
     this->label2->Location = System::Drawing::Point(9, 154); 
     this->label2->Name = L"label2"; 
     this->label2->Size = System::Drawing::Size(78, 17); 
     this->label2->TabIndex = 3; 
     this->label2->Text = L"Styrenhet"; 
     this->label2->Click += gcnew System::EventHandler(this, &Form1::label2_Click); 
     // 
     // textBox2 
     // 
     this->textBox2->Location = System::Drawing::Point(12, 174); 
     this->textBox2->Multiline = true; 
     this->textBox2->Name = L"textBox2"; 
     this->textBox2->ReadOnly = true; 
     this->textBox2->ScrollBars = System::Windows::Forms::ScrollBars::Vertical; 
     this->textBox2->Size = System::Drawing::Size(242, 150); 
     this->textBox2->TabIndex = 2; 
     this->textBox2->TextChanged += gcnew System::EventHandler(this, &Form1::textBox2_TextChanged); 
     // 
     // label3 
     // 
     this->label3->AutoSize = true; 
     this->label3->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 10, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point, 
      static_cast<System::Byte>(0))); 
     this->label3->Location = System::Drawing::Point(12, 323); 
     this->label3->Name = L"label3"; 
     this->label3->Size = System::Drawing::Size(100, 17); 
     this->label3->TabIndex = 5; 
     this->label3->Text = L"Sensorenhet"; 
     // 
     // button1 
     // 
     this->button1->Location = System::Drawing::Point(269, 125); 
     this->button1->Name = L"button1"; 
     this->button1->Size = System::Drawing::Size(125, 47); 
     this->button1->TabIndex = 6; 
     this->button1->Text = L"Manuell Styrning På/Av"; 
     this->button1->UseVisualStyleBackColor = true; 
     this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click); 
     // 
     // button2 
     // 
     this->button2->Image = (cli::safe_cast<System::Drawing::Image^ >(resources->GetObject(L"button2.Image"))); 
     this->button2->Location = System::Drawing::Point(330, 178); 
     this->button2->Name = L"button2"; 
     this->button2->Size = System::Drawing::Size(55, 55); 
     this->button2->TabIndex = 7; 
     this->button2->UseVisualStyleBackColor = true; 
     this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click); 
     // 
     // button3 
     // 
     this->button3->Image = (cli::safe_cast<System::Drawing::Image^ >(resources->GetObject(L"button3.Image"))); 
     this->button3->Location = System::Drawing::Point(269, 178); 
     this->button3->Name = L"button3"; 
     this->button3->Size = System::Drawing::Size(55, 55); 
     this->button3->TabIndex = 8; 
     this->button3->UseVisualStyleBackColor = true; 
     // 
     // button4 
     // 
     this->button4->Image = (cli::safe_cast<System::Drawing::Image^ >(resources->GetObject(L"button4.Image"))); 
     this->button4->Location = System::Drawing::Point(269, 239); 
     this->button4->Name = L"button4"; 
     this->button4->Size = System::Drawing::Size(55, 55); 
     this->button4->TabIndex = 9; 
     this->button4->UseVisualStyleBackColor = true; 
     // 
     // button5 
     // 
     this->button5->Image = (cli::safe_cast<System::Drawing::Image^ >(resources->GetObject(L"button5.Image"))); 
     this->button5->Location = System::Drawing::Point(391, 178); 
     this->button5->Name = L"button5"; 
     this->button5->Size = System::Drawing::Size(55, 55); 
     this->button5->TabIndex = 10; 
     this->button5->UseVisualStyleBackColor = true; 
     // 
     // button6 
     // 
     this->button6->Image = (cli::safe_cast<System::Drawing::Image^ >(resources->GetObject(L"button6.Image"))); 
     this->button6->Location = System::Drawing::Point(391, 239); 
     this->button6->Name = L"button6"; 
     this->button6->Size = System::Drawing::Size(55, 55); 
     this->button6->TabIndex = 11; 
     this->button6->UseVisualStyleBackColor = true; 
     // 
     // button8 
     // 
     this->button8->Image = (cli::safe_cast<System::Drawing::Image^ >(resources->GetObject(L"button8.Image"))); 
     this->button8->Location = System::Drawing::Point(330, 239); 
     this->button8->Name = L"button8"; 
     this->button8->Size = System::Drawing::Size(55, 55); 
     this->button8->TabIndex = 13; 
     this->button8->UseVisualStyleBackColor = true; 
     // 
     // pictureBox1 
     // 
     this->pictureBox1->Image = (cli::safe_cast<System::Drawing::Image^ >(resources->GetObject(L"pictureBox1.Image"))); 
     this->pictureBox1->Location = System::Drawing::Point(480, 47); 
     this->pictureBox1->Name = L"pictureBox1"; 
     this->pictureBox1->Size = System::Drawing::Size(302, 401); 
     this->pictureBox1->TabIndex = 14; 
     this->pictureBox1->TabStop = false; 
     // 
     // label4 
     // 
     this->label4->AutoSize = true; 
     this->label4->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 15, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, 
      static_cast<System::Byte>(0))); 
     this->label4->Location = System::Drawing::Point(475, 19); 
     this->label4->Name = L"label4"; 
     this->label4->Size = System::Drawing::Size(59, 25); 
     this->label4->TabIndex = 15; 
     this->label4->Text = L"Karta"; 
     // 
     // textBox3 
     // 
     this->textBox3->ImeMode = System::Windows::Forms::ImeMode::NoControl; 
     this->textBox3->Location = System::Drawing::Point(269, 35); 
     this->textBox3->Name = L"textBox3"; 
     this->textBox3->Size = System::Drawing::Size(100, 20); 
     this->textBox3->TabIndex = 16; 
     this->textBox3->TextChanged += gcnew System::EventHandler(this, &Form1::textBox4_TextChanged); 
     // 
     // label5 
     // 
     this->label5->AutoSize = true; 
     this->label5->Location = System::Drawing::Point(266, 19); 
     this->label5->Name = L"label5"; 
     this->label5->Size = System::Drawing::Size(53, 13); 
     this->label5->TabIndex = 17; 
     this->label5->Text = L"COM-Port"; 
     this->label5->Click += gcnew System::EventHandler(this, &Form1::label5_Click); 
     // 
     // button7 
     // 
     this->button7->Location = System::Drawing::Point(269, 61); 
     this->button7->Name = L"button7"; 
     this->button7->Size = System::Drawing::Size(75, 23); 
     this->button7->TabIndex = 18; 
     this->button7->Text = L"Anslut"; 
     this->button7->UseVisualStyleBackColor = true; 
     this->button7->Click += gcnew System::EventHandler(this, &Form1::button7_Click); 
     // 
     // button9 
     // 
     this->button9->Enabled = false; 
     this->button9->Location = System::Drawing::Point(350, 61); 
     this->button9->Name = L"button9"; 
     this->button9->Size = System::Drawing::Size(75, 23); 
     this->button9->TabIndex = 19; 
     this->button9->Text = L"Koppla Från"; 
     this->button9->UseVisualStyleBackColor = true; 
     this->button9->Click += gcnew System::EventHandler(this, &Form1::button9_Click); 
     // 
     // label6 
     // 
     this->label6->AutoSize = true; 
     this->label6->Location = System::Drawing::Point(375, 38); 
     this->label6->Name = L"label6"; 
     this->label6->Size = System::Drawing::Size(59, 13); 
     this->label6->TabIndex = 20; 
     this->label6->Text = L"Ej ansluten"; 
     // 
     // textBox4 
     // 
     this->textBox4->Location = System::Drawing::Point(16, 365); 
     this->textBox4->Name = L"textBox4"; 
     this->textBox4->ReadOnly = true; 
     this->textBox4->Size = System::Drawing::Size(45, 20); 
     this->textBox4->TabIndex = 21; 
     // 
     // label7 
     // 
     this->label7->AutoSize = true; 
     this->label7->Location = System::Drawing::Point(12, 347); 
     this->label7->Name = L"label7"; 
     this->label7->Size = System::Drawing::Size(49, 13); 
     this->label7->TabIndex = 22; 
     this->label7->Text = L"Sensor 1"; 
     // 
     // label8 
     // 
     this->label8->AutoSize = true; 
     this->label8->Location = System::Drawing::Point(71, 347); 
     this->label8->Name = L"label8"; 
     this->label8->Size = System::Drawing::Size(49, 13); 
     this->label8->TabIndex = 24; 
     this->label8->Text = L"Sensor 2"; 
     // 
     // textBox5 
     // 
     this->textBox5->Location = System::Drawing::Point(75, 365); 
     this->textBox5->Name = L"textBox5"; 
     this->textBox5->ReadOnly = true; 
     this->textBox5->Size = System::Drawing::Size(45, 20); 
     this->textBox5->TabIndex = 23; 
     // 
     // label9 
     // 
     this->label9->AutoSize = true; 
     this->label9->Location = System::Drawing::Point(126, 347); 
     this->label9->Name = L"label9"; 
     this->label9->Size = System::Drawing::Size(49, 13); 
     this->label9->TabIndex = 26; 
     this->label9->Text = L"Sensor 3"; 
     // 
     // textBox6 
     // 
     this->textBox6->Location = System::Drawing::Point(130, 365); 
     this->textBox6->Name = L"textBox6"; 
     this->textBox6->ReadOnly = true; 
     this->textBox6->Size = System::Drawing::Size(45, 20); 
     this->textBox6->TabIndex = 25; 
     // 
     // label10 
     // 
     this->label10->AutoSize = true; 
     this->label10->Location = System::Drawing::Point(9, 388); 
     this->label10->Name = L"label10"; 
     this->label10->Size = System::Drawing::Size(49, 13); 
     this->label10->TabIndex = 28; 
     this->label10->Text = L"Sensor 4"; 
     // 
     // textBox7 
     // 
     this->textBox7->Location = System::Drawing::Point(13, 406); 
     this->textBox7->Name = L"textBox7"; 
     this->textBox7->ReadOnly = true; 
     this->textBox7->Size = System::Drawing::Size(45, 20); 
     this->textBox7->TabIndex = 27; 
     // 
     // label11 
     // 
     this->label11->AutoSize = true; 
     this->label11->Location = System::Drawing::Point(71, 388); 
     this->label11->Name = L"label11"; 
     this->label11->Size = System::Drawing::Size(49, 13); 
     this->label11->TabIndex = 30; 
     this->label11->Text = L"Sensor 5"; 
     // 
     // textBox8 
     // 
     this->textBox8->Location = System::Drawing::Point(75, 406); 
     this->textBox8->Name = L"textBox8"; 
     this->textBox8->ReadOnly = true; 
     this->textBox8->Size = System::Drawing::Size(45, 20); 
     this->textBox8->TabIndex = 29; 
     // 
     // label12 
     // 
     this->label12->AutoSize = true; 
     this->label12->Location = System::Drawing::Point(126, 388); 
     this->label12->Name = L"label12"; 
     this->label12->Size = System::Drawing::Size(49, 13); 
     this->label12->TabIndex = 32; 
     this->label12->Text = L"Sensor 6"; 
     // 
     // textBox9 
     // 
     this->textBox9->Location = System::Drawing::Point(130, 406); 
     this->textBox9->Name = L"textBox9"; 
     this->textBox9->ReadOnly = true; 
     this->textBox9->Size = System::Drawing::Size(45, 20); 
     this->textBox9->TabIndex = 31; 
     // 
     // serialPort1 
     // 
     this->serialPort1->BaudRate = 115200; 
     this->serialPort1->RtsEnable = true; 
     // 
     // Form1 
     // 
     this->AutoScaleDimensions = System::Drawing::SizeF(6, 13); 
     this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font; 
     this->ClientSize = System::Drawing::Size(789, 485); 
     this->Controls->Add(this->label12); 
     this->Controls->Add(this->textBox9); 
     this->Controls->Add(this->label11); 
     this->Controls->Add(this->textBox8); 
     this->Controls->Add(this->label10); 
     this->Controls->Add(this->textBox7); 
     this->Controls->Add(this->label9); 
     this->Controls->Add(this->textBox6); 
     this->Controls->Add(this->label8); 
     this->Controls->Add(this->textBox5); 
     this->Controls->Add(this->label7); 
     this->Controls->Add(this->textBox4); 
     this->Controls->Add(this->label6); 
     this->Controls->Add(this->button9); 
     this->Controls->Add(this->button7); 
     this->Controls->Add(this->label5); 
     this->Controls->Add(this->textBox3); 
     this->Controls->Add(this->label4); 
     this->Controls->Add(this->pictureBox1); 
     this->Controls->Add(this->button8); 
     this->Controls->Add(this->button6); 
     this->Controls->Add(this->button5); 
     this->Controls->Add(this->button4); 
     this->Controls->Add(this->button3); 
     this->Controls->Add(this->button2); 
     this->Controls->Add(this->button1); 
     this->Controls->Add(this->label3); 
     this->Controls->Add(this->label2); 
     this->Controls->Add(this->textBox2); 
     this->Controls->Add(this->label1); 
     this->Controls->Add(this->textBox1); 
     this->Name = L"Form1"; 
     this->Text = L"Cthulhu"; 
     this->Load += gcnew System::EventHandler(this, &Form1::Form1_Load); 
     (cli::safe_cast<System::ComponentModel::ISupportInitialize^ >(this->pictureBox1))->EndInit(); 
     this->ResumeLayout(false); 
     this->PerformLayout(); 

    } 
    #pragma endregion 
private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void label1_Click(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void label2_Click(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void textBox2_TextChanged(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void textBox1_TextChanged(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void textBox4_TextChanged(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void label5_Click(System::Object^ sender, System::EventArgs^ e) { 
     } 
private: System::Void button7_Click(System::Object^ sender, System::EventArgs^ e) { 
      try { 
       serialPort1->Open(); 
      } 
      catch (...) { 
       label6->Text = "Ett Fel Uppstod"; 
      } 

      textBox4->ReadOnly = true; 
      button7->Enabled = false; 
      button9->Enabled = true; 
      label6->Text = "Ansluten"; 

     } 


private: System::Void button9_Click(System::Object^ sender, System::EventArgs^ e) { 
      serialPort1->Close(); 

      textBox4->ReadOnly = false; 
      button7->Enabled = true; 
      button9->Enabled = false; 
      label6->Text = "Ej Ansluten"; 
     } 
}; 
    } 

Answer 1

您需要的Form1對象的引用，你不能使用Form1類型。除非你聲明serialPort1爲靜態。

（如由Hans帕桑特評論，有輕微的清理）

我想補充的Form1實例中，你可以看到代碼生成器是如何引用串行端口，這是

this->serialPort1