> For the complete documentation index, see [llms.txt](https://docs.hex-rays.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hex-rays.com/8.4/developer-guide/idc/idc-api-reference/alphabetical-list-of-idc-functions/739.md). # add\_enum\_member ``` add a member of enum - a symbolic constant enum_id - id of enum name - name of symbolic constant. Must be unique in the program. value - value of symbolic constant. bmask - bitmask of the constant ordinary enums accept only -1 as a bitmask all bits set in value should be set in bmask too returns: 0-ok, otherwise error code CONST_ERROR_... long add_enum_member(long enum_id, string name, long value, long bmask); #define CONST_ERROR_NAME 1 // already have member with this name (bad name) #define CONST_ERROR_VALUE 2 // already have member with this value #define CONST_ERROR_ENUM 3 // bad enum id #define CONST_ERROR_MASK 4 // bad bmask #define CONST_ERROR_ILLV 5 // bad bmask and value combination (~bmask & value != 0) ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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/739.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.