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

Changes the pinned state of a chat. There can be up to getOption("pinned_chat_count_max")/getOption("pinned_archived_chat_count_max") pinned non-secret chats and the same number of secret chats in the main/archive chat list. The limit can be increased with Telegram Premium. Returns object_ptr<Ok>.

NameTypeDescription
chat_listChatListChat list in which to change the pinned state of the chat.
chat_idstringChat identifier.
is_pinnedboolPass true to pin the chat; pass false to unpin it.

More details on telegram's documentation.