ImageGear for C and C++ on Windows v19.10 - Updated
Group Functions
API Reference Guide > ART Component API Reference > ART Component Functions Reference > Group Functions

These functions begin with ART_group_. They perform operations on groups of marks. You can form any number of groups and assign them names. You may choose to group all shapes together, and then send them "to the back" using the ART_group_send_to_back() function.