delphi FMX有一套自己的消息处理机制

unit Unit1;

interface

uses

  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,

  FMX.Presentation.Messages,

  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,

  FMX.Controls.Presentation, FMX.StdCtrls;

type

  TForm1 = class(TForm)

    Button1: TButton;

    procedure FormCreate(Sender: TObject);

    procedure Button1Click(Sender: TObject);

    procedure FormDestroy(Sender: TObject);

  private

    { Private declarations }

    FMessageSender: TMessageSender;

  public

    { Public declarations }

    procedure DefaultHandler(var Message); override;

  end;

var

  Form1: TForm1;

implementation

{$R *.fmx}

procedure TForm1.Button1Click(Sender: TObject);

begin

  FMessageSender.SendMessage(10, 'aaa');

end;

procedure TForm1.DefaultHandler(var Message);

begin

  inherited;

  ShowMessage(TDispatchMessage(Message).MsgID.ToString());

  ShowMessage(TDispatchMessageWithValue<String>(Message).Value);

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

  FMessageSender := TMessageSender.Create();

  FMessageSender.Receiver := Self;

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

  FMessageSender.DisposeOf();

end;

end.

转载于:https://www.cnblogs.com/tulater/p/7575151.html