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Unit1.cpp：源码内容

							//---------------------------------------------------------------------------
#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)
{
  HPEN pen;
  TPoint po;
  HDC ddc;
  ddc=GetDC(GroupBox1->Handle);
  BitBlt(ddc,0,0,GroupBox1->Width,GroupBox1->Height,Image1->Picture->Bitmap->Canvas->Handle,0,0,SRCCOPY);
  MoveToEx(ddc,5,5,&po);
  LineTo(ddc,GroupBox1->Width-5,5);
  LineTo(ddc,GroupBox1->Width-5,GroupBox1->Height-5);
  LineTo(ddc,5,GroupBox1->Height-5);
  LineTo(ddc,5,5);
  pen=CreatePen(0,1,0x00ffffff);
  SelectObject(ddc,pen);
  MoveToEx(ddc,6,6,&po);
  LineTo(ddc,GroupBox1->Width-4,6);
  LineTo(ddc,GroupBox1->Width-4,GroupBox1->Height-4);
  LineTo(ddc,6,GroupBox1->Height-4);
  LineTo(ddc,6,6);
  TextOut(ddc,10,0,GroupBox1->Caption.c_str(),GroupBox1->Caption.Length());
}
//---------------------------------------------------------------------------

						