Просмотр буфера обмена

Code:

...

private

{ Private declarations }

PrevHwnd: Hwnd;

procedure WMChangeCBChain(var Msg: TWMChangeCBChain);

   message WM_CHANGECBCHAIN;

procedure WMDrawClipboard(var Msg: TWMDrawClipboard);

   message WM_DRAWCLIPBOARD;

...

procedure TForm1.WMChangeCBChain(var Msg: TWMChangeCBChain);

begin

if PrevHWnd = Msg.Remove then

   PrevHWnd := Msg.Next;

if Msg.Remove <> Handle then

   SendMessage(PrevHWnd, WM_CHANGECBCHAIN, Msg.Remove, Msg.Next);

end;

procedure TForm1.WMDrawClipboard(var Msg: TWMDrawClipboard);

var

P: PChar;

H: THandle;

begin

SendMessage(PrevHWnd, WM_DRAWCLIPBOARD, 0, 0);

if Clipboard.HasFormat(CF_TEXT) then

begin

   H := Clipboard.GetAsHandle(CF_TEXT);

   Len := GlobalSize(H) + 1;

   P := GlobalLock(H);

   Memo1.SetTextBuf(P);

   GlobalUnlock(H);

end;

Msg.Result := 0;

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

PrevHwnd := SetClipboardViewer(Handle);

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

ChangeClipboardChain(Handle, PrevHwnd);

end;