Here are the classes, structs, unions and interfaces with brief descriptions:
[detail level 123]
  KLFSysInfo | Utilities to get system information |
   BatteryInfo | |
 __klf_StrArg_MapOp | |
| KLFAbstractPropertizedObject | An abstract object characterized by properties |
| KLFAbstractPropertizedObjectSaver | Inherit this class to implement a custom saver for KLFAbstractPropertizedObjects |
| KLFAdvancedConfigEditor | |
| 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 |
| KLFConfigBase | |
| ObjConnection | |
| KLFConfigProp | |
| KLFConfigPropBase | |
| KLFContainerSideWidgetManager | A generic container side widget show/hide manager (mac only) |
| KLFDebugBlock | Utility to time the execution of a block |
| KLFDebugBlockTimer | An extension of KLFDebugBlock with millisecond-time display |
| KLFDebugObjectWatcher | |
| KLFDelayedPleaseWaitPopup | A popup screen inviting user to wait, appearing after a delay |
| KLFDisplayLabel | A label to display a LaTeX-formula-output-like image |
| KLFDropDataHandler | An abstract handler for when data is dropped |
| KLFEnumComboBox | Combo box proposing a list of (integer) enumeration values |
| KLFEnumListWidget | |
| Item | |
| KLFEnumType | |
| klfEqualFunc | Implements default equality tester with operator== |
| KLFFactoryBase | Base class for factories |
| KLFFactoryManager | A base abstract factory manager class |
| KLFFloatSideWidgetManager | A Floating window show/hide manager |
| KLFFlowLayout | A Layout that places widgets left to right, top to bottom |
| KLFFlowListWidget | |
| KLFGridFlowLayout | A Layout that lays out its children in a grid, flowing left to right, top to bottom |
| KLFItemViewSearchTarget | A search target (for KLFSearchBar) for standard item views |
| KLFIteratorSearchable | A Searchable object interface based on iterative searching |
| KLFLatexEdit | A text edit field that edits latex code |
| KLFLatexParenSpecs | |
| ParenModifierSpec | |
| ParenSpec | |
| KLFLatexSyntaxHighlighter | |
| ParsedBlock | |
| KLFMacAutoReleaseBlock | |
| KLFMapInitData | |
| KLFPathChooser | A widget comprising of a line edit and a "browse" button |
| KLFPixmapButton | |
| KLFPleaseWaitPopup | A popup screen inviting the user to wait |
| KLFPObjEditWidget | |
| KLFPObjPropRef | |
| KLFPObjPropRefHelper | |
| KLFPObjRegisteredType | |
| KLFPointerGuard | |
| KLFPosSearchable | An object that can be searched with a KLFSearchBar |
 Pos | An abstract position in a searchable object |
 PosData | A Base class for storing abstract position data |
| KLFPosSearchableProxy | |
| KLFProgErr | |
| KLFProgressDialog | A Progress Dialog |
| KLFProgressReporter | Object that emits progress information of a (lengthy) operation |
| KLFPropertizedObject | A class that holds properties |
| KLFRefPtr | Stores a pointer to an object with refcount |
| KLFRelativeFont | |
| KLFRelativeFontBase | |
| KLFSearchable | An interface for objects that can be I-searched with a KLFSearchBar (OBSOLETE) |
| KLFSearchableProxy | A proxy class that relays search queries to another searchable object (OBSOLETE) |
| KLFSearchBar | An Search Bar for Incremental Search |
| KLFShowHideSideWidgetManager | A show-widget/hide-widget side widget show/hide manager |
| KLFSideWidget | A widget that can be shown or hidden, that expands a main widget, e.g. klatexformula expanded mode |
| KLFSideWidgetManagerBase | Abstract core functionality of showing/hiding a KLFSideWidget |
| KLFSideWidgetManagerFactory | A factory for creating side widget managers |
| KLFSpecifyableRegisteredType | |
| KLFSpecifyableType | |
| klfStrCaseEqualFunc | Implements an equality tester between strings |
| KLFSyncGuardPtr | Store a guarded pointer, synchronizing other copies of this pointer |
| KLFTarget | |
| KLFTargeter | |
| KLFToolsDesPlugin | |
| KLFUnitChooser | A combo box to select a unit for measures |
| Unit | |
| KLFUnitSpinBox | A spin box that can display values in different units |
| KLFVariantConverter | |
| KLFVariantConverter< QList< T > > | |
| KLFVariantConverter< QTextCharFormat > | |
| KLFWaitAnimationOverlay | An animation display |
| KLFWindowGeometryRestorer | Helper class that restores window geometry after show/hide events |
| QtColorTriangle | Triangular color selection widget |