mainform.cpp

C++ BUILDER精彩编程实例集锦(源码)2 第三部分 文件操作 第四部分 图像处理

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Mainform.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
  this->Memo1->Text="";
}
//---------------------------------------------------------------------------
void __fastcall TForm1::BitBtn4Click(TObject *Sender)
{
   this->Close();
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
   if(this->OpenDialog1->Execute())
   {
      this->Edit1->Text=this->OpenDialog1->FileName;
      this->Memo1->Clear();
      int iFileHandle = FileOpen(OpenDialog1->FileName, fmOpenRead);
      int iFileLength = FileSeek(iFileHandle,0,2);
      FileSeek(iFileHandle,0,0);
      char *pszBuffer = new char[iFileLength+1];
      int iBytesRead = FileRead(iFileHandle, pszBuffer, iFileLength);
      FileClose(iFileHandle);
      this->Memo1->Text=pszBuffer;
      delete [] pszBuffer;
   }
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn2Click(TObject *Sender)
{//对文件进行编码
  if(this->Edit1->Text.Length()<1||this->Edit2->Text.Length()<1)
     return;
  TFileStream *InputStream=new TFileStream(this->Edit1->Text,fmOpenRead);
  TFileStream *OutputStream=new TFileStream(this->Edit2->Text,fmCreate|fmOpenReadWrite);
  this->NMUUProcessor1->Method==uuMime;
  this->NMUUProcessor1->InputStream=InputStream;
  this->NMUUProcessor1->OutputStream=OutputStream;
  this->NMUUProcessor1->Encode();
  OutputStream->Seek(soFromBeginning,0);
  char *WriteBuffer=new char[OutputStream->Size];
  OutputStream->Read(WriteBuffer,OutputStream->Size);
  this->Memo1->Clear();
  this->Memo1->Text=WriteBuffer;
  delete WriteBuffer;
  delete OutputStream;
  delete InputStream;
  MessageBox(Handle,"编码文件操作成功","信息提示",MB_OK);
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn3Click(TObject *Sender)
{//对文件进行解码
  if(this->Edit1->Text.Length()<1||this->Edit2->Text.Length()<1)
     return;
  TFileStream *InputStream=new TFileStream(this->Edit1->Text,fmOpenRead);
  TFileStream *OutputStream=new TFileStream(this->Edit2->Text,fmCreate|fmOpenReadWrite);
  this->NMUUProcessor1->Method==uuMime;
  this->NMUUProcessor1->InputStream=InputStream;
  this->NMUUProcessor1->OutputStream=OutputStream;
  this->NMUUProcessor1->Decode();
  OutputStream->Seek(soFromBeginning,0);
  char *WriteBuffer=new char[OutputStream->Size];
  OutputStream->Read(WriteBuffer,OutputStream->Size);
  this->Memo1->Clear();
  this->Memo1->Text=WriteBuffer;
  delete WriteBuffer;
  delete OutputStream;
  delete InputStream;
  MessageBox(Handle,"解码文件操作成功","信息提示",MB_OK);
}
//---------------------------------------------------------------------------