In response to a first message received at a desktop of a data processing system from a message source, at least a portion of the first message is displayed in an area along an edge of a desktop screen presented by the desktop. In response to a first signal indicating that a cursor has been positioned within a predetermined distance of the displayed first message, further detailed information of the first message is displayed by increasing size of the area towards the edge of the desktop screen in an animated fashion, including displaying an input field without launching a separate window or process to allow a user to respond to the first message. In response to a second message entered into the input field by the user, the desktop transmits the second message to the message source.