- i -
- icon : KDecoration, KDecorationPreviewBridge, KWinInternal::Group, KWinInternal::Client, KWinInternal::Bridge, Button
- ignoreposition : KWinInternal::RulesWidgetBase
- ignorePositionClasses : KWinInternal::Options
- inactiveWindowOpacity : KWinInternal::Options
- inactiveWindowShadowSize : KWinInternal::Options
- input_mode : KWinInternal::Motif::MwmHints
- isLeft : Quartz::QuartzButton, Default::KDEDefaultButton
- isMouseOver : Default::KDEDefaultButton
- isOnAllDesktops : KDecoration, KWinInternal::Client, Quartz::QuartzButton
- isSticky : Default::KDEDefaultButton