---
id: "P:cAlgo.API.ActiveFrameChangedEventArgs.NewFrame"
kind: "property"
type: "T:cAlgo.API.ActiveFrameChangedEventArgs"
url: "https://help.ctrader.com/ctrader-algo/references/EventArgs/ActiveFrameChangedEventArgs/NewFrame/"
---

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

# ActiveFrameChangedEventArgs.NewFrame

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

## NewFrame

Returns the new active frame or null.

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

- CLI: Available to plugins only, and plugins cannot run in the CLI.
- Cloud: Available to plugins only, and plugins cannot run in the cloud.

C#:

```csharp
public Frame NewFrame {get;}
```

Python:

```python
activeFrameChangedEventArgs.NewFrame: Frame
```

### Returns

`Frame` — 

### Examples

C#:

```csharp
protected override void OnStart()
{
    ChartManager.ActiveFrameChanged += OnActiveFrameChanged;
}

private void OnActiveFrameChanged(ActiveFrameChangedEventArgs args)
{
    if (args.NewFrame != null)
        Print("New active frame: {0}, size: {1} x {2}", args.NewFrame.Id, args.NewFrame.Width, args.NewFrame.Height);
}
```

Python:

```python
def on_start(self):
    api.ChartManager.ActiveFrameChanged += self.on_active_frame_changed

def on_active_frame_changed(self, args):
    if args.NewFrame is not None:
        api.Print(f"New active frame: {args.NewFrame.Id}, size: {args.NewFrame.Width} x {args.NewFrame.Height}")
```