A CheckBox with a skew transformation


   
    

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        xmlns:sys="clr-namespace:System;assembly=mscorlib" 
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
  <Grid>

    <Button Content ="Click Me!" Grid.Row="0" Grid.Column="1" Width="95" Height="40">
      <Button.RenderTransform>
        <SkewTransform AngleX ="20" AngleY ="20"/>
      </Button.RenderTransform>
    </Button>

  </Grid>

</Window>