unit1.cpp

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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  Graphics::TBitmap *bmp;
  TMemoryStream *sm;
  bmp = new Graphics::TBitmap();
  sm=new TMemoryStream();
  sm->Clear();
  sm->LoadFromFile("te.bmp");
  bmp->LoadFromStream(sm);
  Canvas->Draw(20,20,bmp);
  delete bmp;
  delete sm;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
  TFileStream *fm;
  TMemoryStream *sm;
  int sz;
  if(OpenDialog1->Execute())
  {
    if(FileExists("FILE.TXT"))
      fm=new TFileStream("FILE.TXT",fmOpenReadWrite);
    else
      fm=new TFileStream("FILE.TXT",fmCreate);
    sm=new TMemoryStream();
    sm->LoadFromFile(OpenDialog1->FileName);
    sz=sm->Size;
    sm->Position=0;
    fm->Seek(0,soFromEnd);
    fm->CopyFrom(sm,sz);
//也可以用Write
//    fm->Write(sm->Memory,sz);
    delete fm;
    delete sm;
  }
}
//---------------------------------------------------------------------------