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Unit1.cpp：源码内容

							//---------------------------------------------------------------------------
#include <vcl.h>
#include <registry.hpp>
#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)
{
  AnsiString fname;
  TRegistry *rg;
//
  fname=GetCurrentDir();
  fname=fname+"\block.bmp";
  rg=new TRegistry();
  rg->RootKey=HKEY_CURRENT_USER;
  rg->OpenKey("\Control Panel\desktop",False);
  rg->WriteString("TileWallpaper","1");
  rg->WriteString("Wallpaper",fname);
//
  rg->CloseKey();
  rg->Free();
  SystemParametersInfo(SPI_SETDESKWALLPAPER,0,NULL,SPIF_SENDCHANGE);
}
//---------------------------------------------------------------------------

						