- o -
- off() : KLed
- offset() : KRuler, KSpell
- ok() : KStdGuiItem
- okClicked() : KDialogBase
- on() : KToolBarButton, KLed
- onLayoutChange() : KTabBar
- opacity() : KRootPixmap
- opaqueResize() : KDockSplitter
- open() : KStdGuiItem
- openLink() : KActiveLabel
- openURL() : KAboutDialog, KAboutWidget
- openURLSlot() : KAboutDialog, KAboutWidget
- operator+() : KActionCollection
- operator+=() : KActionCollection
- operator=() : KSpellConfig, KGuiItem, KColor, KActionCollection
- operator==() : KColor
- orientation() : KToolBarSeparator, KSeparator, KSelector, KPanelExtension, KPanelApplet, KDockSplitter, KSeparator
- orientationChange() : KPanelApplet
- originalText() : KLineEdit
- overwrite() : KStdGuiItem