Private Sub LayeredWindows()
     ' Gets the version of the layered windows feature.
     Dim myVersion As Version = _
        OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows)

     ' Prints whether the feature is available.
     If (myVersion IsNot Nothing) Then
         textBox1.Text = "Layered windows feature is installed." & _
            ControlChars.CrLf
     Else
         textBox1.Text = "Layered windows feature is not installed." & _
            ControlChars.CrLf
     End If 
     'This is an alternate way to check whether a feature is present.
     If OSFeature.Feature.IsPresent(OSFeature.LayeredWindows) Then
         textBox1.Text &= "Again, layered windows feature is installed."
     Else
         textBox1.Text &= "Again, layered windows feature is not installed."
     End If
 End Sub

private void LayeredWindows() {
   // Gets the version of the layered windows feature.
   Version myVersion = OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows);

   // Prints whether the feature is available.
   if (myVersion != null)
      textBox1.Text = "Layered windows feature is installed." + '\n';
   else
      textBox1.Text = "Layered windows feature is not installed." + '\n';

   // This is an alternate way to check whether a feature is present.
   if (OSFeature.Feature.IsPresent(OSFeature.LayeredWindows))
      textBox1.Text += "Again, layered windows feature is installed.";
   else
      textBox1.Text += "Again, layered windows feature is not installed.";
}

private:
   void LayeredWindows()
   {
      // Gets the version of the layered windows feature.
      Version^ myVersion = OSFeature::Feature->GetVersionPresent(
         OSFeature::LayeredWindows );

      // Prints whether the feature is available.
      if ( myVersion != nullptr )
      {
         textBox1->Text = "Layered windows feature is installed.\n";
      }
      else
      {
         textBox1->Text = "Layered windows feature is not installed.\n";
      }


      // This is an alternate way to check whether a feature is present.
      if ( OSFeature::Feature->IsPresent( OSFeature::LayeredWindows ) )
      {
         textBox1->Text = String::Concat( textBox1->Text,
            "Again, layered windows feature is installed." );
      }
      else
      {
         textBox1->Text = String::Concat( textBox1->Text,
            "Again, layered windows feature is not installed." );
      }
   }