Beranda > Delphi > Check if Undo is possible in a TMemo

Check if Undo is possible in a TMemo

procedure TForm1.Button1Click(Sender: TObject);
begin
if Memo1.Perform(EM_CANUNDO, 0, 0) <> 0 then
ShowMessage(‘Undo is possible’)
else
ShowMessage(‘Undo is not possible’);
end;

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Kategori:Delphi
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