# process.resume

## Function

Resume a suspended child process and its child process tree under Windows. Usually used in conjunction with process.suspend.

## Syntax

```bt
process(program).child().resume()
```

## Parameters

No parameters.

## Return value

| Type | Description |
| ------ | ------ |
| Bool | Returns true if at least one thread is successfully resumed; returns false if there is no child process handle, the process has exited, or there are no resumable threads. |

## Example

```bt
cmd = process('cmd').args(['/C', 'ping 127.0.0.1 -n 5']).child()
cmd.suspend()
result = cmd.resume()

// Output: true
print result

cmd.kill()
```

## Notes

- resume will not clear the currently saved child process handle.
- Resume under Windows will restore accessible threads in the child process tree through system process and thread snapshots.
- If the process has not been suspended, resume may still try to access the thread, but will not start a new process.
- Linux/macOS does not currently support this method and will return a runtime error.