unit1.pas

delphi 正则表达例程。。。 正则表达式在实际应用中非常广泛

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    GroupBox1: TGroupBox;
    Memo1: TMemo;
    Edit1: TEdit;
    Label1: TLabel;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  exp:string;
  content:string;
begin
  exp:=lowercase(trim(Edit1.Text));
  content:=lowercase(trim(memo1.Text));
  if ExecRegExpr(exp,content)=true then
  begin
    showmessage('匹配成功');
    exit;
  end;
  showmessage('匹配失败');
end;

end.