<UserControl
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
	mc:Ignorable="d"
	x:Class="vMixTextTest.MainControl"
	x:Name="UserControl"
	d:DesignWidth="640" d:DesignHeight="480" Width="768" Height="576">

	<Grid x:Name="LayoutRoot">
	<TextBlock Name="txtText" 
		Text="{Binding Path=TextBehind, Mode=OneWay}" 
		HorizontalAlignment="Center" VerticalAlignment="Top"
		Height="105.04" Width="264.007" Margin="37.993,25.96,0,0"   
		FontSize="26.667" FontWeight="ExtraBold" 
		Foreground="#FFC65555"/>
	</Grid>
</UserControl>

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Threading;
using System.ComponentModel;
using vMixInterop;

namespace vMixTextTest
{
	public partial class MainControl: UserControl, vMixWPFUserControl, INotifyPropertyChanged
	{
		private DispatcherTimer timer;
		
		public MainControl() : base()
		{
			this.InitializeComponent();
			LayoutRoot.DataContext = this;
			
			timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromSeconds(1);
            timer.Tick += timer_Tick;
		}
		
		void timer_Tick(object sender, EventArgs e)
        {
			TextBehind = "Text " + DateTime.Now.ToLongTimeString();
        }

		
		public event PropertyChangedEventHandler PropertyChanged;
		public void OnPropertyChanged(string propertyName)
		{
			if (PropertyChanged != null)
				PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
		}
		
		private string _textBehind = "testInit";
		public string TextBehind{ 
			get 
			{
				return _textBehind;
			}
			private set
			{
				_textBehind = value; 
				OnPropertyChanged("TextBehind");
			}
		}
		public static readonly DependencyProperty TextBehindProperty = 
			DependencyProperty.Register(
				"Label", 
				typeof(string),
        		typeof(MainControl), new PropertyMetadata(""));
		
		public void Load(int width, int height){ TextBehind = "testLoad"; }
        public void Play(){ timer.Start(); }
        public void Pause(){ timer.Stop(); }
        public void SetPosition(TimeSpan position){}
        public TimeSpan GetPosition(){ return new System.TimeSpan(0); }
        public TimeSpan GetDuration(){ return new System.TimeSpan(0); }
        public void Close(){}
        public void ShowProperties(){}
	}
}