Function lilv_sys::lilv_state_set_metadata

pub unsafe extern "C" fn lilv_state_set_metadata(
    state: *mut LilvState, 
    key: u32, 
    value: *const c_void, 
    size: usize, 
    type_: u32, 
    flags: u32
) -> c_int

Set a metadata property on state. @param state The state to set the metadata for. @param key The key to store value under (URID). @param value Pointer to the value to be stored. @param size The size of value in bytes. @param type The type of value (URID). @param flags LV2_State_Flags for value. @return 0 on success.

This is a generic version of lilv_state_set_label(), which sets metadata properties visible to hosts, but not plugins. This allows storing useful information such as comments or preset banks.