WinAPI字符及字符串函數(shù)(9):lstrcat-合并字符串

interface
    uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls;
    type
    TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    end;
    var
    Form1: TForm1;
    implementation
    {$R *.dfm}
    procedure TForm1.Button1Click(Sender: TObject);
    var
    p,p1,p2: PChar;
    begin
    p1 := 'Delphi';
    p2 := '2009';
    GetMem(p, 256);
    p^ := #0;
    lstrcat(p, p1);
    lstrcat(p, ' ');
    lstrcat(p, p2);
    ShowMessage(p); {Delphi 2009}
    FreeMem(p);
    end;
    procedure TForm1.Button2Click(Sender: TObject);
    var
    p1,p2: PChar;
    buf: array[0..255] of Char;
    begin
    p1 := 'Delphi';
    p2 := '2009';
    FillChar(buf, Length(buf), #0);
    lstrcat(buf, p1);
    lstrcat(buf, ' ');
    lstrcat(buf, p2);
    ShowMessage(buf); {Delphi 2009}
    end;
    procedure TForm1.Button3Click(Sender: TObject);
    var
    p,p1,p2: PChar;
    begin
    p1 := 'Delphi';
    p2 := '2009';
    p := GetMemory(256);
    lstrcpy(p, p1);
    lstrcat(p, ' ');
    lstrcat(p, p2);
    ShowMessage(p); {Delphi 2009}
    FreeMemory(p);
    end;
    var
    buf: array[0..255] of Char;
    procedure TForm1.Button4Click(Sender: TObject);
    var
    p1,p2: PChar;
    begin
    p1 := '萬一的 ';
    p2 := 'Delphi 博客';
    lstrcat(buf, p1);
    lstrcat(buf, p2);
    ShowMessage(buf); {萬一的 Delphi 博客}
    end;
    end.