How to detect that narrator tool is running?

Question

I have a custom control. i like to provide the support for System screen reading support. Is there any logic to find that the narrator or coded UI tool is enabled in our machine.??

Answer 1

You can use namespace Windows.UI.Xaml.Automation.Peers and this method:

var isNarratorStarted = AutomationPeer.ListenerExists(AutomationEvents.AutomationFocusChanged);

Answer 2

I had similiar case but when working with UWP app and I solved it that way. Maybe you can take something from here:

private bool isAutomationPeerCreated = false;

private bool IsAutomationPeerAttached => this.isAutomationPeerCreated || AutomationPeer.ListenerExists(AutomationEvents.PropertyChanged);

//triggered everytime you run narrator or any other screen reading software that is based on accessing automation properties
protected override AutomationPeer OnCreateAutomationPeer()
{
    if(!this.IsAutomationPeerAttached)
    {
        this.isAutomationPeerCreated = true;
        this.OUR_LOGIC_BASED_ON_ATTACHED_NARRATOR();
    }
    return null;
}

protected override void OnNavigatedFrom(NavigationEventArgs e)
{
    base.OnNavigatedFrom(e);
    this.isAutomationPeerCreated = false;
}

protected override async void OnNavigatedTo(NavigationEventArgs e)
{
    base.OnNavigatedTo(e);
    if(IsAutomationPeerAttached)
    {
        this.OUR_LOGIC_BASED_ON_ATTACHED_NARRATOR();       
    }
}

private void OUR_LOGIC_BASED_ON_ATTACHED_NARRATOR()
{
    //DO STH.
}