Here are the classes, structs, unions and interfaces with brief descriptions:

CAxMap	Map component for visualization of vector, raster or grid data.
CAxMap_Deprecated	Holds members that once were a part of AxMap class. New API members to substitute deprecated ones are listed in description.
CChart	Represents a single chart on the map.
CChartField	Represents a single bar or sector of the chart.
CCharts	Provides functionality for generation and managing the charts on the map.
CColorScheme	Provides methods for random colour generation and colour interpolation based on the specific set of colour breaks.
CDrawingRectangle	Represents a rectangle that can be rendered on the map.
CESRIGridManager	An ESRI grid manager object provides functions which facilitate using ESRI grids with MapWinGIS.
CExpression	Represents expression parser and evaluator.
CExtents	Represents a rectangle on the map.
CField	Represents a single field of the attribute table.
CFieldStatOperations	Defines group statistic operations for columns of shapefile attribute table.
CFileManager	Provides functionality for opening and examining different types of datasources.
CFunction	Represents a function supported by built-in expression parser.
CGdalDataset	Represents a light wrapper around GDAL raster dataset which allows to perform some operations without using more advanced classes like RasterSource or GridSource.
CGdalDriver	Represents a single GDAL driver. Please refer to GDAL documentation for more details information.
CGdalDriverManager	Holds all available GDAL drivers.
CGdalRasterBand	Represents a single band of raster datasource. Please refer to GDAL documentation for more details information.
CGdalUtils	Implementation of the GDAL v2 librified functions. Not all functions are implemented yet.
CGeoProjection	Holds information about coordinate system and projection of the data.
CGlobalSettings	Holds global settings for MapWinGIS. Allows to retrieve GDAL errors.
CGrid	The grid object is used to represent a grid which can be added to the map.
CGridColorBreak	A grid color break object defines how a specified region of a grid will be colored.
CGridColorScheme	A grid color scheme defines how a grid will be colored.
CGridHeader	A grid header object is used to hold the information contained in a grid's header
CICallback	An interface for callback objects which can be used to return information about progress and errors.
CIdentifier	Provides settings for built-in identifier tool (cmIdentify cursor).
CImage	Represents an raster image of particular format which may be added to the map.
CLabel	Represents a single label on the map.
CLabelCategory	Represents visualization options for labels displayed on the map.
CLabels	Represents a list of labels of the map layer and their visualization options.
CLinePattern	Provides means for defining custom pattern from lines and point symbols for rendering polyline layers.
CLineSegment	Holds information about a single line or marker in the line pattern represented by LinePattern class.
CMeasuring	Handles built-in distance and area measuring on the map.
COgrDatasource	Represents GDAL/OGR vector datasource which may be represented by spatial database or file-based vector format.
COgrLayer	Represents a single layer in GDAL/OGR datasource or result of SQL query against such datasource.
CPoint	A point object represents a point with x, y, Z, and M values. Shapes created by adding point objects to the shape.
CSelectionList	Holds list of shapes and pixels which where identified by user with Identify tool.
CShape	A shape object represents a geometric shape which can be added to a shapefile which is displayed in the map.
CShapeDrawingOptions	Holds the set of options for visualization of shapefiles.
CShapeEditor	Facilitates interactive creation and editing of vector shapes.
CShapefile	Provides a functionality for accessing and editing ESRI shapefiles.
CShapefileCategories	Represents a list of visualization categories which determine the appearance of the shapefile.
CShapefileCategory	Represents a set of visualization options for shapefile layer.
CShapefileColorScheme	A shapefile color scheme defines how a shapefile will be colored.
CShapeNetwork	Represents a network built from the polyline shapefile.
CShapeValidationInfo	Provides information about validation of a single shapefile before or after certain operation.
CTable	The table object is used to store information from the dbf file associated with a shapefile.
CTileProviders	Holds the list of tile providers associated with Tiles class.
CTiles	Downloads and displays data from online TMS tile services, like OpenStreetMap.
CTin	Represents a triangulated irregular network which may be displayed in the map.
CUndoList	Holds list of actions performed by user with interactive editing tools to enable undo functionality.
CUtils	A utils object provides access to a set of utility functions to perform a variety of tasks on other objects such as grids, images, points, shapes, shapefiles, tins, etc. Starting at v4.9.5 some specific GDAL methods are moved to GdalUtils.
CVector	A vector object is used to represent the light source for a grid color scheme.
CWmsLayer	Represents a layer downloading and displaying the data from the particular WMS Server.