C [C++] Creating a stub & builder (video)

Code
#include <iostream>

#include <string>

#include <fstream>

#include <msclr\marshal_cppstd.h>



struct Settings {

 int port;

 char url[256];

};



namespace Builder {



 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 std;



 /// <summary>

 /// Summary for MyForm

 /// </summary>

 public ref class MyForm : public System::Windows::Forms::Form

 {

 public:

  MyForm(void)

  {

   InitializeComponent();

   //

   //TODO: Add the constructor code here

   //

  }



 protected:

  /// <summary>

  /// Clean up any resources being used.

  /// </summary>

  ~MyForm()

  {

   if (components)

   {

    delete components;

   }

  }

 private: System::Windows::Forms::Label^  label1;

 private: System::Windows::Forms::Label^  label2;

 private: System::Windows::Forms::TextBox^  textBox1;

 private: System::Windows::Forms::TextBox^  textBox2;

 private: System::Windows::Forms::Button^  button1;

 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->label1 = (gcnew System::Windows::Forms::Label());

   this->label2 = (gcnew System::Windows::Forms::Label());

   this->textBox1 = (gcnew System::Windows::Forms::TextBox());

   this->textBox2 = (gcnew System::Windows::Forms::TextBox());

   this->button1 = (gcnew System::Windows::Forms::Button());

   this->SuspendLayout();

   // 

   // label1

   // 

   this->label1->AutoSize = true;

   this->label1->Location = System::Drawing::Point(13, 13);

   this->label1->Name = L"label1";

   this->label1->Size = System::Drawing::Size(32, 13);

   this->label1->TabIndex = 0;

   this->label1->Text = L"URL:";

   this->label1->Click += gcnew System::EventHandler(this, &MyForm::label1_Click);

   // 

   // label2

   // 

   this->label2->AutoSize = true;

   this->label2->Location = System::Drawing::Point(13, 35);

   this->label2->Name = L"label2";

   this->label2->Size = System::Drawing::Size(29, 13);

   this->label2->TabIndex = 1;

   this->label2->Text = L"Port:";

   // 

   // textBox1

   // 

   this->textBox1->Location = System::Drawing::Point(52, 13);

   this->textBox1->Name = L"textBox1";

   this->textBox1->Size = System::Drawing::Size(230, 20);

   this->textBox1->TabIndex = 2;

   // 

   // textBox2

   // 

   this->textBox2->Location = System::Drawing::Point(52, 35);

   this->textBox2->Name = L"textBox2";

   this->textBox2->Size = System::Drawing::Size(230, 20);

   this->textBox2->TabIndex = 3;

   // 

   // button1

   // 

   this->button1->Location = System::Drawing::Point(16, 62);

   this->button1->Name = L"button1";

   this->button1->Size = System::Drawing::Size(266, 39);

   this->button1->TabIndex = 4;

   this->button1->Text = L"Build";

   this->button1->UseVisualStyleBackColor = true;

   this->button1->Click += gcnew System::EventHandler(this, &MyForm::button1_Click);

   // 

   // MyForm

   // 

   this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);

   this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;

   this->ClientSize = System::Drawing::Size(294, 109);

   this->Controls->Add(this->button1);

   this->Controls->Add(this->textBox2);

   this->Controls->Add(this->textBox1);

   this->Controls->Add(this->label2);

   this->Controls->Add(this->label1);

   this->Name = L"MyForm";

   this->Text = L"MyForm";

   this->ResumeLayout(false);

   this->PerformLayout();



  }

#pragma endregion

 private: System::Void label1_Click(System::Object^  sender, System::EventArgs^  e) {

    }

 private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {

     Settings data;

     

     String ^portStr = textBox2->Text;

     String ^urlStr = textBox1->Text;



     string stdUrlStr = msclr::interop::marshal_as<string>(urlStr);

     string stdPortStr = msclr::interop::marshal_as<string>(portStr);



     data.port = atoi(stdPortStr.c_str());

     strcpy(data.url, stdUrlStr.c_str());



     ifstream stub("Stub.exe", ios::binary);

     ofstream built("Built.exe", ios::binary);



     built << stub.rdbuf();

     stub.close();



     built.write((char*)&data, sizeof(Settings));

     built.close();



     MessageBox::Show("Built!", "Success");

    }

};

}