# get\_member\_size ``` get size of a member id - structure type ID member_offset - member offset. The offset can be any offset in the member. For example, is a member is 4 bytes long and starts at offset 2, then 2, 3, 4, 5 denote the same structure member. returns: -1 if bad structure type ID is passed or no such member in the structure otherwise returns size of the specified member in bytes. long get_member_size(long id, long member_offset); ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hex-rays.com/8.4/developer-guide/idc/idc-api-reference/alphabetical-list-of-idc-functions/389.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.