????? ????? ???? FileCompare ???????? .NET Visual C++ ?? Visual C++ 2005

• ??? ??? ??? ????? ???? ????? ??? ??? ????? ??? ?? ???? ??????? ???????.
• ??? ??? ??? ??????? ????? ??????, ????? ???????.

????? ?? ?????

1. ??? ????? Visual Studio .NET (2003) ?? Microsoft Visual Studio 2005.
2. ?? ??????? ???? ??? ??? ???? ?? ???? ??? ???????.
3. ???? ??? ?????? Visual C++ ??? ????? Project ?? ???? ??? ????? ???? (.NET) ??? ?????. ??? ??????? FileCompare.
   
   ?????? ?? Visual Studio 2005 ? ???? ??? Visual C++ ??? ????? Project ?? ???? ??? ????? ???? ??? ?????.
4. ?? "?????? ??????" ???? ??? ?????? ?????? ??? FileCompare ???? ??? ????? ?? ???? ??? ????? ???? ????.
5. ?? ???? ?????? ????? ???? ???? ? ???? ??? ??? ????? ???? ?????. ?? ???? ???? ??? ???? Form1 ??? ?? ???? ??? ???. ??? ??? ????? Form1.h.
6. Paste the following code in the Form1.h file:

   #pragma once
   #using <mscorlib.dll>
   #using <system.windows.forms.dll>
   #using <system.dll>
   #using <system.drawing.dll>
   
   namespace Compare
   {
   	using namespace System;
   	using namespace System::ComponentModel;
   	using namespace System::Collections;
   	using namespace System::Windows::Forms;
   	using namespace System::Drawing;
   	using namespace System::IO;
   
   	public __gc class Form1 : public System::Windows::Forms::Form
   	{	
   	public:
   		Form1(void)
   		{
   			InitializeComponent();
   		}
     
   	protected:
   		void Dispose(Boolean disposing)
   		{
   			if (disposing && components)
   			{
   				components->Dispose();
   			}
   			__super::Dispose(disposing);
   		}
   	
   	private: System::Windows::Forms::TextBox *  textBox1;
   	private: System::Windows::Forms::TextBox *  textBox2;
   	private: System::Windows::Forms::Label *  label1;
   	private: System::Windows::Forms::Label *  label2;
   	private: System::Windows::Forms::Button *  Compare;
   
   
   	private:
   
   		System::ComponentModel::Container * components;
   
   		
   		void InitializeComponent(void)
   		{
   			this->textBox1 = new System::Windows::Forms::TextBox();
   			this->textBox2 = new System::Windows::Forms::TextBox();
   			this->label1 = new System::Windows::Forms::Label();
   			this->label2 = new System::Windows::Forms::Label();
   			this->Compare = new System::Windows::Forms::Button();
   			this->SuspendLayout();
   			// 
   			// textBox1
   			// 
   			this->textBox1->Location = System::Drawing::Point(32, 104);
   			this->textBox1->Name = S"textBox1";
   			this->textBox1->TabIndex = 0;
   			this->textBox1->Text = S"";
   			// 
   			// textBox2
   			// 
   			this->textBox2->Location = System::Drawing::Point(168, 104);
   			this->textBox2->Name = S"textBox2";
   			this->textBox2->TabIndex = 1;
   			this->textBox2->Text = S"";
   			// 
   			// label1
   			// 
   			this->label1->Location = System::Drawing::Point(32, 64);
   			this->label1->Name = S"label1";
   			this->label1->TabIndex = 2;
   			this->label1->Text = S"File1";
   			// 
   			// label2
   			// 
   			this->label2->Location = System::Drawing::Point(176, 64);
   			this->label2->Name = S"label2";
   			this->label2->TabIndex = 3;
   			this->label2->Text = S"File2";
   			// 
   			// Compare
   			// 
   			this->Compare->Location = System::Drawing::Point(96, 168);
   			this->Compare->Name = S"Compare";
   			this->Compare->TabIndex = 4;
   			this->Compare->Text = S"Compare";
   			this->Compare->Click += new System::EventHandler(this, button1_Click);
   			// 
   			// Form1
   			// 
   			this->AutoScaleBaseSize = System::Drawing::Size(5, 13);
   			this->ClientSize = System::Drawing::Size(292, 273);
   			this->Controls->Add(this->Compare);
   			this->Controls->Add(this->label2);
   			this->Controls->Add(this->label1);
   			this->Controls->Add(this->textBox2);
   			this->Controls->Add(this->textBox1);
   			this->Name = S"Form1";
   			this->Text = S"Form1";
   			this->ResumeLayout(false);
   
   		}
   	private:
   		System::Void button1_Click(System::Object *  sender, System::EventArgs *  e)
   		{	 
   		}
   
   	};
   }

   ??? ???????? ???????? ?????? ????? ????? ??? ????? ???? ???? ???? ?? ???.
   
   ?????? ??? ????? ??????? ??? ??? ??????? ??? ?????? ??????? ??????? ?????? (/ clr:oldSyntax) ?? Visual C++ 2005 ????? ????? ????????? ???????? ?????? ?????. ?????? ??????? ??? ??? ??????? ??? ?????? ??????? ??????? ?????? ?? Visual C++ 2005 ???? ??????? ???????:
   1. ???? ??? Project ?? ???? ??? <ProjectName> ?????.
      
      ??????<ProjectName> ?????? ?????? ??? ???????.
   2. ?? ?????? ????? ????? ?? ???? ??? ???.
   3. ???? ?????? ??? ????? ????? ?????? ??? ? ?????? ??????? (/ clr:oldSyntax) ?? ??????? ??????? ????? "??? ????? ????? ??????" ?? ????? ?????? ???? ??? ????? ?? ???? ??? ?????.
   ?????? ??? ???? ?? ????????? ??? ??? ????? ????? ?????? ????? ?????? ?????? ??????? ??????? ?? ?????? ???? Microsoft ?????? ??? ?????:
   / ??? (??????? ??? ????? ????? ??????)
   http://msdn2.microsoft.com/en-us/library/k8d11d4s.aspx

   (http://msdn2.microsoft.com/en-us/library/k8d11d4s.aspx)
7. ????? ???? ??????? ??? ????? Form1:

   // This method accepts two strings that represent two files to 
   // compare. A return value of 0 indicates that the contents of the files
   // are the same. A return value of any other value indicates that the 
   // files are different.
   private:
   bool FileCompare(String *file1, String *file2)
   {
   	int file1byte;
   	int file2byte;
   	FileStream *fs1;
   	FileStream *fs2;
       
   	// Determine if the same file was referenced two times.
   	if (String::Equals(file1,file2))
   	{
   		// Return true to indicate that the files are the same.
   		return true;
   	}
   
           
   	// Open the two files.
   	try
   	{
   		fs1 = new FileStream(file1, FileMode::Open);
   		fs2 = new FileStream(file2, FileMode::Open);
   	
   			    
   		// Check the file sizes. If the sizes are different, the files 
   		// are different.
   		if (fs1->Length != fs2->Length)
   		{
   			// Close the file
   			fs1->Close();
   			fs2->Close();
   
   			// Return false to indicate files are different
   			return false;
   		}
   
   		// Read and compare a byte from each file until either a
   		// non-matching set of bytes is found or until the end of
   		// file1 is reached.
   		do 
   		{
   			// Read one byte from each file.
   			file1byte = fs1->ReadByte();
   			file2byte = fs2->ReadByte();
   		}
   		while ((file1byte == file2byte) && (file1byte != -1));
   
   		// Close the files.
   		fs1->Close();
   		fs2->Close();
   	}
   	
   	catch(Exception *ex)
   	{
   		if(fs1)
   		{
   			fs1->Close();
   		}
   		if(fs2)
   		{
   			fs2->Close();
   		}
   		throw ex;
   	}
   
   	// Return the success of the comparison. "file1byte" is 
   	// equal to "file2byte" at this point only if the files are 
   	// the same.
   	return ((file1byte - file2byte) == 0);
   }
   
   

8. ?? ???? ???????? ???????? ??????? ?? ??? ????? ??? ????? button1_Click ?? ??? Form1: ????

   try
   {
   	if (FileCompare(this->textBox1->Text, this->textBox2->Text))
   	{
   		MessageBox::Show("Files are equal.");				
   	}
   	else
   	{
   		MessageBox::Show("Files are not equal.");
   	}
   }
   catch(Exception *ex)
   {
   	MessageBox::Show(ex->Message);
   }
   

9. ?? "?????? ??????" ???? ??? ?????? ?????? ??? FileCompare ???? ??? ????? ?? ???? ??? ????? ???? ????.
10. ?? ???? ?????? ????? ???? ???? ? ???? ??? ??? C++ ??? ?????. ?? ???? ???? ??? ???? File_Compare ??? ?? ???? ??? ???. ??? ??? ????? File_Compare.cpp.
11. ?? ???? ???????? ???????? ??????? ?? file:

    #include "form1.h"
    
    #include <windows.h>
    #include <tchar.h>
    
    using namespace Compare;

12. ????? ???? WinMain ??????? ??? ??? File_Compare.cpp:

    int APIENTRY _tWinMain(HINSTANCE hInstance,
                         HINSTANCE hPrevInstance,
                         LPTSTR    lpCmdLine,
                         int       nCmdShow)
    {
    }

13. ?? ???? ???????? ???????? ??????? ?? ???? WinMain:

    System::Threading::Thread::CurrentThread->ApartmentState = System::Threading::ApartmentState::STA;
    Application::Run(new Form1());
    return 0;

14. ??? ???????.

????? ?? ?????

1. ????? ?????? ??????? ??? ????? ?? ????? ???? ???? ????.
2. ???? ??? ??????.