# BLOCKICON Command [GstarCAD 2019](Help%20System/GSTARCAD/2019/Index.md) → [Commands](Help%20System/GSTARCAD/2019/Commands/(Commands).md) → [B](Help%20System/GSTARCAD/2019/Commands/B/(B).md) The BLOCKICON is used to generate preview image for block in design center. ## Command Access: > **Menu:** File \> Drawing Utilities \> Update Block Icons > **Command:** BLOCKICON ## Command Prompts: > Enter block name \<\*\>: **Function d Description:** This command could generate icon for block created in previous version. Users could input a string of block names divided by commas or input wildcards. For example, input Q1? 3, it will update the block named Q1 and blocks with two characters and ends with 3\. Enter the block name, the information about process description will display in the command line. Users could press ESC to stop. ## Other versions with matching text [GstarCAD 2016](../../../2016/Commands/B/BLOCKICON%20Command.md) · [GstarCAD 2017](../../../2017/Commands/B/BLOCKICON%20Command.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/B/BLOCKICON%20Command.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/Commands/B/BLOCKICON%20Command.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/Commands/B/BLOCKICON%20Command.md)