- i -
- insert() : ButtonGroup, ColourList
- isCustomColour() : ColourCombo
- isDateOnly() : DateTime
- isEmpty() : ColourList
- isNull() : DateTime
- isReadOnly() : CheckBox, ColourCombo, ComboBox, PushButton, RadioButton, Slider, SpinBox2, SpinBox, TimeEdit, TimePeriod
- isValid() : DateEdit, DateTime, TimeEdit, TimeSpinBox