set_sticker_set_thumb

template<class Agent>
api_result<boolean_t, Agent&&> set_sticker_set_thumb(Agent &&agent, set_sticker_set_thumb_args_t args)

template<class Agent>
void set_sticker_set_thumb(Agent &&agent, set_sticker_set_thumb_args_t args, F &&callback)

agent is any object satisfying agent concept.

callback is any callable object accepting expected<boolean_t>.

Use this method to set the thumbnail of a sticker set. Animated thumbnails can be set for animated sticker sets only. Returns True on success.

struct set_sticker_set_thumb_args_t

Arguments that should be passed to set_sticker_set_thumb().

string_t name

Sticker set name

integer_t user_id

User identifier of the sticker set owner

optional_t<variant_t<input_file_t, string_t>> thumb

A PNG image with the thumbnail, must be up to 128 kilobytes in size and have width and height exactly 100px, or a TGS animation with the thumbnail up to 32 kilobytes in size; see https://core.telegram.org/animated_stickers#technical-requirements for animated sticker technical requirements. Pass a file_id as a String to send a file that already exists on the Telegram servers, pass an HTTP URL as a String for Telegram to get a file from the Internet, or upload a new one using multipart/form-data. More info on Sending Files ». Animated sticker set thumbnail can’t be uploaded via HTTP URL.