MapWinGIS is ActiveX MFC control to display geospatial data and a number of ATL classes to support the interaction with various datasources. The support for the larger part of both raster and vector formats is provided byGDAL library. A few formats are supports natively: ESRI Shapefiles, BMP images, some binary grids. There is also built-in support for commonly used tile map services (TMS) like OpenStreetMap. Compared to other projects MapWinGIS provides both high performance due to native C++ code and the ease of use in various programming languages (COM), but generally it's limited to Windows desktop applications. Here are some code sample to give a feel of the API, links to the detailed API reference are given below.
MapWinGIS 4.9
MapWinGIS 4.8
Version history (changes from v 4.7 to v 4.8)
Older Documentation
UsingMapWinGIS.pdf - quick Start Guide (VB.NET);
MapWinGIS Reference Manual with TOC.pdf - API reference (thanks DerBeobachter for adding the TOC);
MapWinGIS_API_Poster.ppt - class diagram;
MapWinGIS.7z - another API reference (.chm);
Sample projects on various languages
