MapWinGIS.ocx is a FREE and OPEN SOURCE C++ based geographic information system programming ActiveX Control and application programmer interface (API) that can be added to a Windows Form in Visual Basic, C#, Delphi, or other languages that support ActiveX, providing your app with a map. Go to our forum for questions and help:
According to the discussion at https://mapwindow.discourse.group/t/wms-anomaly-in-the-request/426/4 the following adjustments allow to adapt the BoundingBox: Either use tkWMSBoundingBoxOrder or leave it set to Auto, then WMS 1.3.0 uses LongLat