Tips 7

How to detect clipboard change

Detecting clipboard change is very similar to detecting system time change. We will detect WM_DRAWCLIPBOARD system message.

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs;

type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
procedure ClipBoardChanged(var Message: TMessage); message WM_DRAWCLIPBOARD;
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ClipBoardChanged(var Message: TMessage);
begin
ShowMessage('Clipboard changed!');
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
SetClipboardViewer(Handle);
end;

end.