<Window x:Class="DlgCasillaVerificacion"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Casilla de verificación" Height="200" Width="300" ResizeMode="NoResize" ShowInTaskbar="False" WindowStartupLocation="CenterOwner"
        FocusManager.FocusedElement="{Binding ElementName=ctTexto}">
    <Grid>
    <Grid.RowDefinitions>
      <RowDefinition />
      <RowDefinition />
    </Grid.RowDefinitions>
    <TextBox Grid.Row="0" Name="ctTexto" VerticalAlignment="Center" Width="200" PreviewTextInput="ctTexto_PreviewTextInput" />
    <CheckBox Grid.Row="1" Name="cvConverMayus" VerticalAlignment="Top" Width="200" Content="_Convertir a mayúsculas" Click="cvConverMayus_Click" IsThreeState="True" />
  </Grid>
</Window>
