On 16/11/2017 at 09:53, xxxxxxxx wrote:
I suggest you to read this example wich does exactly what you need.
https://github.com/PluginCafe/cinema4d_cpp_sdk/blob/master/source/gui/objectdata_descriptions.cpp#L236
Where basicly you retrieve a "DescriptionContainer" using GetCustomDataTypeDefault and push it to your description with the correct DescID.
The example can look a bit scary since it' pretty huge, but it's cover pretty much all kinds of UI possible to add to an object description.