34 lines
1.2 KiB
Markdown
34 lines
1.2 KiB
Markdown
## setExpandable
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### Description
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The `setExpandable` method allows you to control whether a node within a Treeview object can be expanded or collapsed by the user. When a node is set to be expandable, it will show a visual indicator (such as a "+" symbol) when it has child nodes, allowing the user to expand or collapse the node by clicking on the indicator.
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### Parameters
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1. `boolean` A boolean value indicating whether the node should be expandable (true) or not (false).
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### Returns
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1. `node` The node in use
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### Usage
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* Creates a Treeview, adds a child node to the root node, and sets the child node to be expandable:
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```lua
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local basalt = require("basalt")
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local mainFrame = basalt.createFrame()
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local treeview = mainFrame:addTreeview()
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local rootNode = treeview:getRoot()
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local childNode = rootNode.addChild("Expandable Child Node")
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childNode.setExpandable(true)
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basalt.autoUpdate()
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```
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In this example, a Treeview object is created and added to the mainFrame. The `getRoot` method is used to access the root node, and a new child node is added to it using the `addChild` method. The `setExpandable` method is then called on the child node with a true parameter, making the node expandable by the user.
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