unit1.pas

Delphi实效编程百例的随书源代码 这是其中的程序控制部分

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormCreate(Sender: TObject);
//设定窗口的属性，使其保持在最前
var
  temp: Integer;
begin
  SystemParametersInfo(SPI_SCREENSAVERRUNNING, 1, @temp, 0);
  //限制功能键
  formstyle:=fsStayOnTop;
  windowstate:=wsMaximized;
end;


procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
//取消对功能键的限制
var
  temp: Integer;
begin
  SystemParametersInfo(SPI_SCREENSAVERRUNNING, 0, @temp, 0);
end;

procedure TForm1.Button1Click(Sender: TObject);
//退出程序
begin
  close;
end;
end.