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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 PrinterName;
  TRegistry *rg;
  rg=new TRegistry();
  rg->RootKey=HKEY_LOCAL_MACHINE;
//
  rg->OpenKey("\Config\0001\System\CurrentControlSet\Control\Print\Printers",False);
  PrinterName=rg->ReadString("Default");
  if(PrinterName=="")ShowMessage("未安装打印机！");
  else ShowMessage(PrinterName);
//
  rg->CloseKey();
  rg->Free();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
  AnsiString ass;
  TRegistry *rg;
  rg=new TRegistry();
  rg->RootKey=HKEY_LOCAL_MACHINE;
//
  Memo1->Clear();
  rg->OpenKey("\Config\0001\Display\Settings",False);
  ass=rg->ReadString("BitsPerPixel");
  Memo1->Lines->Add("颜色(每像素点的位数)："+ass);
  ass=rg->ReadString("Resolution");
  Memo1->Lines->Add("屏幕区域(横向像素、纵向像素)："+ass);
  ass=rg->ReadString("DPILogicalX");
  Memo1->Lines->Add("横向逻辑分辨率："+ass);
  ass=rg->ReadString("DPILogicalY");
  Memo1->Lines->Add("纵向逻辑分辨率："+ass);
  ass=rg->ReadString("DPIPhysicalX");
  Memo1->Lines->Add("横向物理分辨率："+ass);
  ass=rg->ReadString("DPIPhysicalY");
  Memo1->Lines->Add("纵向物理分辨率："+ass);
//
  rg->CloseKey();
  rg->Free();
}
//---------------------------------------------------------------------------

						