On this tab page you specify the signals of your custom widget. The central, unlabeled list box lists all the signals together with their parameters.
Click on this button to insert a new signal entry. By default the signal will be called signal and will have no parameters.
Clicking on this button removes the currently selected signal from the list.
In this edit field you can edit the name and the parameter types of the currently selected signal. Just fill in the name of the signal and write the parameter types in parentheses.