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)
    Button1: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  FirstHalf:PChar;
  SecondHalf:PChar;
  HalfLen:Integer;
begin
  HalfLen:=StrLen(PChar(string(Edit1.Text)))div 2;
  GetMem(FirstHalf,HalfLen+2);
  GetMem(SecondHalf,HalfLen+2);
  FirstHalf^:=Chr(0);
  SecondHalf^:=Chr(0);
  StrLCat(FirstHalf,PChar(string(Edit1.Text)),HalfLen);
  StrCat(SecondHalf,PChar(string(Edit1.Text))+HalfLen);
  Application.MessageBox(FirstHalf,'FirstHalf', MB_OKCANCEL + MB_ICONINFORMATION);
  Application.MessageBox(SecondHalf,'SecondHalf', MB_OKCANCEL + MB_ICONINFORMATION);
  FreeMem(FirstHalf);
  FreeMem(SecondHalf);


end;

end.