Скопировать строку в Буфер и прочитать её

uses
ClipBrd;
procedure StrToClipbrd(StrValue: string);
var
S: string;
hMem: THandle;
pMem: PChar;
begin
hMem := GlobalAlloc(GHND or GMEM_SHARE, Length(StrValue) + 1);
if hMem <> 0 then
begin
pMem := GlobalLock(hMem);
if pMem <> nil then
begin
StrPCopy(pMem, StrValue);
GlobalUnlock(hMem);
if OpenClipboard(0) then
begin
EmptyClipboard;
SetClipboardData(CF_TEXT, hMem);
CloseClipboard;
end
else
GlobalFree(hMem);
end
else
GlobalFree(hMem);
end;
end;
function GetStrFromClipbrd: string;
begin
if Clipboard.HasFormat(CF_TEXT) then
Result := Clipboard.AsText
else
begin
ShowMessage('There is no text in the Clipboard!');
Result := '';
end;
end;
// write "Hallo" to the clipboard and read it back. 
procedure TForm1.Button1Click(Sender: TObject);
begin
StrToClipbrd('Hallo');
ShowMessage(GetStrFromClipbrd);
end;