模拟按下键盘上的某个键
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, ExtCtrls, StdCtrls; type TForm1 = class(TForm) Edit1: TEdit; Button1: TButton; Timer1: TTimer; procedure Button1Click(Sender: TObject); procedure Timer1Timer(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); begin postmessage(edit1.Handle,WM_KEYDOWN,65,0); //通过向编辑框1对象发送按键码值为65 end; procedure TForm1.Timer1Timer(Sender: TObject); begin postmessage(form1.Handle,WM_KEYDOWN,VK_TAB,0); //通过向Form1对象发送按键码值为TAB end; end.