CBdemo: C++Builder Version

/****************************************************************************\
*                                                                            *
*  CBdemo.cpp                                                                *
*  CBdemoU.cpp                                                               *
*                                                                            *
*  This program demonstrates how to exchange information between the active  *
*  virtual buffer and the Windows clipboard.                                 *
*                                                                            *
\****************************************************************************/
#include 
#pragma hdrstop
#include "CBDemoU.h"
//---------------------------------------------------------------------------
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
   : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormActivate(TObject *Sender)
{
   fg_realize(hPal);
   Invalidate();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
   hDC = GetDC(Form1->Handle);
   fg_setdc(hDC);
   hPal = fg_defpal();
   fg_realize(hPal);
   fg_vbinit();
   hVB = fg_vballoc(vbWidth,vbHeight);
   fg_vbopen(hVB);
   fg_vbcolors();
   fg_showpcx("MOUSE.PCX",FG_AT_XY);
   Application->OnActivate = OnActivate;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormPaint(TObject *Sender)
{
   fg_vbscale(0,vbWidth-1,0,vbHeight-1,0,cxClient-1,0,cyClient-1);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormResize(TObject *Sender)
{
   cxClient = ClientWidth;
   cyClient = ClientHeight;
   Invalidate();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormDestroy(TObject *Sender)
{
   fg_vbclose();
   fg_vbfree(hVB);
   fg_vbfin();
   DeleteObject(hPal);
   ReleaseDC(Form1->Handle,hDC);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::CutClick(TObject *Sender)
{
   fg_vb2clip(0,vbWidth-1,0,vbHeight-1);
   fg_erase();
   fg_vbscale(0,vbWidth-1,0,vbHeight-1,0,cxClient-1,0,cyClient-1);
   Paste->Enabled = True;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::PasteClick(TObject *Sender)
{
   fg_clip2vb(0,vbWidth-1,0,vbHeight-1,0);
   fg_vbscale(0,vbWidth-1,0,vbHeight-1,0,cxClient-1,0,cyClient-1);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ExitClick(TObject *Sender)
{
   Close();
}