Delphi调用WinAPI 字符及字符串函数(9)

lstrcat - 合并字符串

unit Unit1;

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 := '万一的 ';
　p2 := 'Delphi 博客';
　lstrcat(buf, p1);
　lstrcat(buf, p2);
　ShowMessage(buf); {万一的 Delphi 博客}
end;

end.