Public Event Closing As WindowEventHandler

Dim instance As UXWindow
Dim handler As WindowEventHandler
 
AddHandler instance.Closing, handler

public event WindowEventHandler Closing

public event Closing: WindowEventHandler; 

In JScript, you can handle the events defined by another class, but you cannot define your own.

public: __event WindowEventHandler* Closing

public:
event WindowEventHandler^ Closing

public partial class HomeWindow : UXWindow
{
    public HomeWindow()
    {
        InitializeComponent();
        this.Closing += new Intersoft.Client.Framework.WindowEventHandler(HomeWindow_Closing);
    }

    void HomeWindow_Closing(object sender, Intersoft.Client.Framework.WindowEventArgs e)
    {
        if (DocumentNotSaved)
        {
            MessageBox.Show("Your document has not been saved. Close aborted");

            // When the Handled is set to true, the window will cancel the Close command.
            e.Handled = true;
        }
    }
}