You can store additional information to channels such as background color or a long description of a channel with channel metadata, which can be fetched or rendered into the UI. A channel metadata is a
std::map<std::wstring, std::wstring> and it can be stored into a
channel object. To store a channel metadata into a
channel object, add key-value items after creating a
std::map<std::wstring, std::wstring>, and pass it as an argument to a parameter when calling the
CreateMetaData() method. You can put multiple key-value items in the map.