Helmut,
v4.9 will be able to load some wms data using the tiles methods.
I'm not sure if it can load all wms data.
Here's is some sample code about WMS:
http://www.codeproject.com/Articles/7199/Free-Maps-from-the-Web-Using-Web-Mapping-Service
I've used it before to create a WMS plug-in for a specific task.
v4.9 will be able to load some wms data using the tiles methods.
I'm not sure if it can load all wms data.
Here's is some sample code about WMS:
http://www.codeproject.com/Articles/7199/Free-Maps-from-the-Web-Using-Web-Mapping-Service
I've used it before to create a WMS plug-in for a specific task.