Hi. I am just trying to put together my first GUI application with FXRuby. My app has an input window and an output window. The output window should display either a text field with messages (kind of log) or a tabular output. At the moment I use FXTabBook for switching between these two views. The problem is I need automatically switch to text if there is no table data available and vice versa. I tried to use setFocus but it really just sets the focus and do not set the tab item visible. Perhaps there is a better way to do it? I thought about showing/hiding the widgets and let the user switch them by a button. Thanks for advice (or just point me to the right source code example) Dalibor Sramek