| KLFStyle::BBoxExpand | Structure memorizing parameters for bbox expansion |
| DoubleColor | |
| KLFColorChooser | |
| KLFColorChooseWidget | |
| KLFColorChooseWidgetPane | A pane displaying a gradient of colors, controlling one or two (arbitrary) components of a color |
| KLFColorClickSquare | |
| KLFColorComponentsEditorBase | Base utility class that stores and calculates specific components of a color that is being edited |
| KLFColorComponentSpinBox | A Spin box editing a component of a color |
| KLFColorDialog | A dialog to let the user select a color |
| KLFColorList | |
| KLFDelayedPleaseWaitPopup | A popup screen inviting user to wait, appearing after a delay |
| KLFDisplayLabel | A label to display a LaTeX-formula-output-like image |
| KLFEnumComboBox | Combo box proposing a list of (integer) enumeration values |
| klfEqualFunc< Value > | Implements default equality tester with operator== |
| KLFFactoryBase | Base class for factories |
| KLFFactoryManager | A base abstract factory manager class |
| KLFGridFlowLayout | A Layout that lays out its children in a grid, flowing left to right, top to bottom |
| KLFIteratorSearchable< Iter > | A Searchable object interface based on iterative searching |
| KLFPathChooser | A widget comprising of a line edit and a "browse" button |
| KLFPixmapButton | |
| KLFPleaseWaitPopup | A popup screen inviting the user to wait |
| KLFProgressDialog | A Progress Dialog |
| KLFProgressReporter | Object that emits progress information of a (lengthy) operation |
| KLFPropertizedObject | A class that holds properties |
| KLFSearchable | An interface for objects that can be I-searched with a KLFSearchBar |
| KLFSearchableProxy | A proxy class that relays search queries to another searchable object |
| KLFSearchBar | An Search Bar for Incremental Search |
| klfStrCaseEqualFunc | Implements an equality tester between strings |
| KLFStyle | A Formula Style (collection of properties) |
| KLFUnitChooser | A combo box to select a unit for measures |
| KLFUnitSpinBox | A spin box that can display values in different units |
| KLFWaitAnimationOverlay | An animation display |
| QtColorTriangle | Triangular color selection widget |
| KLFUnitChooser::Unit | |
| Vertex |