StrLCopy 只是比 StrCopy 多了一个限制长度的参数; StrPCopy 等价于 StrCopy; StrPLCopy 等价于 StrLCopy.
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs; type TForm1 = class(TForm) procedure FormCreate(Sender: TObject); end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.FormCreate(Sender: TObject); var p: PChar; begin p := PChar(StringOfChar(#0, 9)); StrCopy(p, '123456789'); ShowMessage(p); {123456789} StrLCopy(p, '123456789', 3); ShowMessage(p); {123} StrPCopy(p, '123456789'); ShowMessage(p); {123456789} StrPLCopy(p, '123456789', 3); ShowMessage(p); {123} end; end.SysUtils 单元下的公用函数目录