---
id: "E:cAlgo.API.ToggleButton.Unchecked"
kind: "event"
type: "T:cAlgo.API.ToggleButton"
url: "https://help.ctrader.com/ctrader-algo/references/Controls/ToggleButton/Unchecked/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# ToggleButton.Unchecked

Member of [ToggleButton](https://help.ctrader.com/ctrader-algo/references/Controls/ToggleButton/index.md).

## Unchecked

Occurs when unchecked.

Environments: Desktop supported · CLI not supported · Cloud not supported.

- CLI: Accepted without error but never displayed, so control events such as Click are never raised.
- Cloud: Accepted without error but never displayed, so control events such as Click are never raised.

C#:

```csharp
public event Action<ToggleButtonEventArgs> Unchecked;
```

Python:

```python
toggleButton.Unchecked += handler  # handler(obj: ToggleButtonEventArgs)
```

### Returns

`Action<ToggleButtonEventArgs>` — 

### Examples

C#:

```csharp
var toggleButton = new ToggleButton { Text = "Trading enabled", IsChecked = true };
toggleButton.Unchecked += args =>
{
    foreach (var order in PendingOrders.ToArray())
        CancelPendingOrder(order);
    Print("Trading disabled, pending orders cancelled");
};
Chart.AddControl(toggleButton);
```

Python:

```python
def on_start(self):
    toggleButton = ToggleButton()
    toggleButton.Text = "Trading enabled"
    toggleButton.IsChecked = True
    toggleButton.Unchecked += self.on_toggle_button_unchecked
    api.Chart.AddControl(toggleButton)

def on_toggle_button_unchecked(self, args):
    for order in list(api.PendingOrders):
        api.CancelPendingOrder(order)
    api.Print("Trading disabled, pending orders cancelled")
```