> For the complete documentation index, see [llms.txt](https://kynosdeveloping.gitbook.io/kynosdeveloping/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kynosdeveloping.gitbook.io/kynosdeveloping/kynoslib/gui-and-menu-system.md).

# 📄 GUI & Menu System

Building custom inventories is fully streamlined via an object-oriented abstract layer (`KynosGui`) paired with a high-priority centralized interaction filter (`GuiListener`).

#### 📦 Features & Automatic Filters

* **Input Cancellation**: `GuiListener` intercepts any interaction (`InventoryClickEvent`, `InventoryDragEvent`) touching a `KynosGui` holder, canceling actions instantly to prevent item duplication bugs.
* **Title Color Translation**: Inherited menu constructors automatically run input titles through the Color Utilities pipeline to native strings.

#### 💡 Code Example: Creating a Shop GUI

```java
public class ExampleShopGui extends KynosGui {

    public ExampleShopGui() {
        super(27, "&8Example Framework Shop");
        
        // Fill borders with Gray Stained Glass Panes
        fillBorder(Material.GRAY_STAINED_GLASS_PANE);
        
        // Insert a unique display item
        this.inventory.setItem(13, buildItem(
                Material.DIAMOND, 
                "&b&lEpic Sword", 
                "&7Cost: &a100 Coins", "&7Tier: &6Legendary"
        ));
    }

    @Override
    public void handleSlotClick(InventoryClickEvent event) {
        if (event.getSlot() == 13) {
            Player player = (Player) event.getWhoClicked();
            player.sendMessage("§aYou purchased the Epic Sword!");
            player.closeInventory();
        }
    }
}
```


---

# 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://kynosdeveloping.gitbook.io/kynosdeveloping/kynoslib/gui-and-menu-system.md?ask=<question>
```

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.