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)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
    this->OpenDialog1->Filter="Text files(*.txt)|*.txt|All files(*.*)|*.*";
    if(this->OpenDialog1->Execute())
    {
      this->Edit1->Text=this->OpenDialog1->FileName;
    }
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn2Click(TObject *Sender)
{
  if(this->Edit1->Text.Length()<1)
    return;
  if(this->Edit2->Text.Length()<1)
    return;
  TFileStream *MyFStream;
  MyFStream=new TFileStream(this->Edit1->Text,fmOpenRead);
  try
  {
    this->NMStrm1->Host=this->Edit2->Text;
    this->NMStrm1->FromName="NetMasters";
    this->NMStrm1->PostIt(MyFStream);
    MessageBox(Handle,"发送文件到目标主机操作成功！","信息提示",MB_OK);
  }
  catch(...)
  {
    MessageBox(Handle,"发送文件到目标主机操作失败！","信息提示",MB_OK);
  }
  MyFStream->Free();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::BitBtn3Click(TObject *Sender)
{
  this->Close();        
}
//---------------------------------------------------------------------------
void __fastcall TForm1::NMStrmServOnMSG(TComponent *Sender,
      const AnsiString sFrom, TStream *strm)
{
  if(this->SaveDialog1->Execute())
  {
    if(FileExists(this->SaveDialog1->FileName))
    {
      if(MessageBox(Handle,"目标文件已经存在，是否删除之？","信息提示",MB_YESNO)==IDNO)
      {
        return;
      }
     DeleteFile(this->SaveDialog1->FileName);
    }
    TFileStream *MyFStream;
    //建立文件
    MyFStream=new TFileStream(this->SaveDialog1->FileName,fmCreate);
    try
    {
       MyFStream->CopyFrom(strm,strm->Size);
       MessageBox(Handle,"接收目标主机发来的文件操作成功！","信息提示",MB_OK);
    }
    catch(...)
    {
       MessageBox(Handle,"接收目标主机发来的文件操作失败！","信息提示",MB_OK);
    }
    MyFStream->Free();
  }
}
//---------------------------------------------------------------------------