Delphi ʹÓÃ×Ô¶¨ÒåÏûÏ¢

1¡¢ÏÈÓÃConst ¶¨ÒåÒ»¸ö³£Á¿£¬ÀýÈç const WM_MyMessage=WM_USER+$200;
2¡¢ÔÚҪʵÏÖµÄunitÖж¨ÒåÒ»¸ö˽Óз½·¨
   procedure doMyMessage(var msg:TMessage);message WM_MyMessage;
3¡¢ÊµÏÖÕâ¸ö˽Óз½·¨
    procedure TForm1.doMyMessage(var msg:TMessage);
begin
  //
  if msg.Msg= WM_MyMessage then
    showmessage('ºÃ°¡')
  else
    showmessage('²»ºÃ');
 
end;
 
 
4¡¢×îÖØÒª °ÑÕâ¸öÏûÏ¢¹ã²¥³öÈ¥ Form1.Perform(WM_MyMessage,0,0);
 
ÏÂÃæÊÇʵÏֵĴúÂë
 
 
unit Unit1;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
const WM_MyMessage=WM_USER+$200;
 
type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    procedure doMyMessage(var msg:TMessage);message WM_MyMessage;
    { Private declarations }
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
 
implementation
 
{$R *.dfm}
 
procedure TForm1.doMyMessage(var msg:TMessage);
begin
  //
  if msg.Msg= WM_MyMessage then
    showmessage('ºÃ°¡')
  else
    showmessage('²»ºÃ');
 
end;
 
procedure TForm1.Button1Click(Sender: TObject);
 
begin
   Form1.Perform(WM_MyMessage,0,0);
 
end;
 
end.