# CONTROL_LBUTTON

*LSL constant*

```lsl
integer CONTROL_LBUTTON = 0x10000000;
```

Tests for the avatar left mouse button control.

Constant groups: [ControlButton](/constants/groups/ControlButton/)

## See also

### Functions

- [llTakeControls](/functions/llTakeControls/)

### Events

- [control](/events/control/)

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*Source: [CONTROL LBUTTON](https://wiki.secondlife.com/wiki/CONTROL_LBUTTON) on the Second Life Wiki. Content from the Second Life Wiki article CONTROL LBUTTON (revision 14194, 2007-03-02), CC BY-SA 3.0.*

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From lsl.dev: https://lsl.dev/constants/CONTROL_LBUTTON/