View Source ExTDLib.Method.EditForumTopic (ExTDLib v0.0.4)

Edits title and icon of a topic in a forum supergroup chat; requires can_manage_topics administrator right in the supergroup unless the user is creator of the topic. Returns object_ptr<Ok>.

NameTypeDescription
chat_idstringIdentifier of the chat.
message_thread_idstringMessage thread identifier of the forum topic.
namestringNew name of the topic; 0-128 characters. If empty, the previous topic name is kept.
edit_icon_custom_emojiboolPass true to edit the icon of the topic. Icon of the General topic can't be edited.
icon_custom_emoji_idstringIdentifier of the new custom emoji for topic icon; pass 0 to remove the custom emoji. Ignored if edit_icon_custom_emoji is false. Telegram Premium users can use any custom emoji, other users can use only a custom emoji returned by getForumTopicDefaultIcons.

More details on telegram's documentation.