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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.
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