When the list of an IlvComboBox is opened, the OpenList callback is called. See the IlvComboBox::OpenListSymbol function for details.

When the list of an IlvComboBox is opened, the keyboard focus is still located on the text field, making it possible to enter characters while the list is shown. The selection of the list is then changed accordingly to what is located in the text field.

It is now possible to edit a matrix item with any IlvGraphic instance. See the class IlvMatrixItemEditor for details.