unit1.~pas

Delphi的函数例子

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Confirm: TButton;
    Edit1: TEdit;
    Edit2: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    procedure ConfirmClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ConfirmClick(Sender: TObject);
var
  Value : Integer;
begin
  Value := CompareText(Edit1.Text,Edit2.Text);
  if Value<>0 then
  begin
    if Value <0 then
      ShowMessage('新密码比确认密码小，字符差距为'+IntToStr(Abs(Value)))
    else
      ShowMessage('新密码比确认密码大，字符差距为'+IntToStr(Value));
  end;
end;

end.