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Unit1.cpp：源码内容

							//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::PBarOpen(int nn)
{
  ProgressBar1->Max=nn;
  ProgressBar1->Position=0;
  ProgressBar1->Visible=True;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::PBarGo(void)
{
  ProgressBar1->StepIt();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::PBarClose(void)
{
  ProgressBar1->Visible=False;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  int ii;
  PBarOpen(256);
  for(ii=0;ii<256;ii++)
  {
    PBarGo();
    Panel1->Color=TColor(RGB(ii,255-ii,ii));
    Panel1->Update();
  }
  PBarClose();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
  int ii;
  FrmBar->PBarOpen(256);
  for(ii=0;ii<256;ii++)
  {
    FrmBar->PBarGo();
    Panel1->Color=TColor(RGB(ii,255-ii,ii));
    Panel1->Update();
  }
  FrmBar->PBarClose();
}
//---------------------------------------------------------------------------

						