Here is a list of all documented files with brief descriptions:

AbstractImage.h
Action.h
AdaptiveLocalFilter.h
AkimaInterpolation.h
Algebra.h
AlignedAllocator.h
Allocator.h
APASSDatabaseFile.h
Arguments.h
Array.h
Association.h
AstrometricMetadata.h
AstrometricReprojection.h
Atomic.h
ATrousWaveletTransform.h
AutoLock.h
AutoPointer.h
AutoStatusCallbackRestorer.h
AutoViewLock.h
BicubicFilterInterpolation.h
BicubicInterpolation.h
BidimensionalInterpolation.h
BilinearInterpolation.h
Bitmap.h
BitmapBox.h
Brush.h
Button.h
ButtonCodes.h
ByteArray.h
CanvasColor.h
CharTraits.h
ChebyshevFit.h
CheckBox.h
Checksum.h
CodeEditor.h
Color.h
ColorComboBox.h
ColorDialog.h
ColorFilterArray.h
ColorSpace.h
ComboBox.h
Complex.h
Compression.h
Console.h
Constants.h
Container.h
Control.h
Convolution.h
Crop.h
Cryptography.h
CubicSplineInterpolation.h
CUDADevice.h
Cursor.h
Defs.h
Diagnostics.h
Dialog.h
DisplayFunction.h
DrizzleData.h
Edit.h
ElapsedTime.h
EndianConversions.h
EphemerisFile.h
ErrorHandler.h
Exception.h
ExternalProcess.h
FastRotation.h
FFT1D.h
FFT2D.h
FFTConvolution.h
FFTRegistration.h
File.h
FileDataCache.h
FileDataCachePreferencesDialog.h
FileDialog.h
FileFormat.h
FileFormatBase.h
FileFormatImplementation.h
FileFormatInstance.h
FileInfo.h
FilterManager.h
FITSHeaderKeyword.h
Flags.h
FluxCalibrationData.h
Font.h
FontComboBox.h
FourierTransform.h
Frame.h
GaiaDatabaseFile.h
GaussianFilter.h
GeometricTransformation.h
GlobalSettings.h
GnomonicProjection.h
Graphics.h
GridInterpolation.h
GroupBox.h
HammerAitoffProjection.h
Histogram.h
HistogramTransformation.h
Homography.h
ICCProfile.h
ICCProfileTransformation.h
Image.h
ImageColor.h
ImageDescription.h
ImageGeometry.h
ImageInfo.h
ImageOptions.h
ImageRenderingModes.h
ImageResolution.h
ImageSelections.h
ImageStatistics.h
ImageTransformation.h
ImageVariant.h
ImageView.h
ImageWindow.h
Indirect.h
IndirectArray.h
IndirectSortedArray.h
IntegerResample.h
IntegrationMetadata.h
InterlacedTransformation.h
Interpolation.h
Iterator.h
JPLEphemeris.h
KDTree.h
KernelFilter.h
KeyCodes.h
KeyValue.h
Label.h
LanczosInterpolation.h
LinearFilter.h
LinearFit.h
LinearInterpolation.h
LinearTransformation.h
LocalNormalizationData.h
Math.h
Matrix.h
MeanFilter.h
Memory.h
MercatorProjection.h
MessageBox.h
MetaFileFormat.h
MetaModule.h
MetaObject.h
MetaParameter.h
MetaProcess.h
MoffatFilter.h
MorphologicalOperator.h
MorphologicalTransformation.h
MultiscaleLinearTransform.h
MultiscaleMedianTransform.h
MultiVector.h
MultiViewSelectionDialog.h
MuteStatus.h
Mutex.h
NearestNeighborInterpolation.h
NetworkTransfer.h
NumericControl.h
OnlineObjectSearchDialog.h
Optional.h
OrthographicProjection.h
OsculatingElements.h
ParallelProcess.h
Pen.h
PhaseMatrices.h
PixelAllocator.h
PixelInterpolation.h
PixelTraits.h
PlateCarreeProjection.h
Point.h
PolarTransform.h
Position.h
PreviewSelectionDialog.h
Process.h
ProcessBase.h
ProcessImplementation.h
ProcessInstance.h
ProcessInterface.h
ProcessParameter.h
ProgressBarStatus.h
ProgressDialog.h
ProjectionBase.h
ProjectionFactory.h
Property.h
PropertyDescription.h
PSFEstimator.h
PSFFit.h
PSFScaleEstimator.h
PSFSignalEstimator.h
PushButton.h
PyramidalWaveletTransform.h
QuadTree.h
RadioButton.h
Random.h
ReadoutOptions.h
ReadWriteMutex.h
RealTimePreview.h
RealTimeProgressStatus.h
Rectangle.h
RedundantMultiscaleTransform.h
ReferenceArray.h
ReferenceCounter.h
ReferenceSortedArray.h
Relational.h
Resample.h
RGBColorSystem.h
RigidTransformation.h
RobustChauvenetRejection.h
Rotate.h
Rotation.h
ScrollBox.h
Search.h
SectionBar.h
Selection.h
SeparableConvolution.h
SeparableFilter.h
SeparableMedianFilter.h
Settings.h
SettingsData.h
SharedPixelData.h
ShepardInterpolation.h
Sizer.h
Slider.h
Sort.h
SortedArray.h
SphericalRotation.h
SpinBox.h
SpinStatus.h
StandardAllocator.h
StandardStatus.h
StarDatabaseFile.h
StarDetector.h
StatusMonitor.h
String.h
StringList.h
StructuringElement.h
SurfacePolynomial.h
SurfaceSimplifier.h
SurfaceSpline.h
SVG.h
TabBox.h
TextAlign.h
TextBox.h
Thread.h
ThresholdedTransformation.h
TimePoint.h
Timer.h
ToolButton.h
Translation.h
TreeBox.h
UIObject.h
UIScaling.h
UnidimensionalInterpolation.h
UnixSignalException.h
Utility.h
VariableShapeFilter.h
Variant.h
Vector.h
Version.h
View.h
ViewList.h
ViewSelectionDialog.h
WCSKeywords.h
WebView.h
Win32Exception.h
WinsorizedSigmaClippingRejection.h
WordArray.h
WorldTransformation.h
XISF.h
XML.h
ZenithalProjections.h