Visual J++

This short Microsoft Visual J++ example shows how you can associate your own function with a particular event.

// BeginEventExampleVJ
import com.ms.wfc.data.*;

public class EventExampleVJ
{
    ConnectionEventHandler handler = new ConnectionEventHandler(this,"onConnectComplete");

    public void onConnectComplete(Object sender,ConnectionEvent e)
    {
        if (e.adStatus == AdoEnums.EventStatus.ERRORSOCCURRED) 
            System.out.println("Connection failed");
        else
            System.out.println("Connection completed");
        return;
    }
    
    public static void main (String[] args)
    {
        EventExampleVJ Class1 = new EventExampleVJ();
        Connection conn = new Connection();
    
        conn.addOnConnectComplete(Class1.handler);     // Enable event support.
        conn.open("DSN=Pubs");
        conn.close();
        conn.removeOnConnectComplete(Class1.handler);  // Disable event support.
    }
}
// EndEventExampleVJ

First, the class method onConnectionComplete is associated with the ConnectionComplete event by creating a new ConnectionEventHandler object and assigning the onConnectComplete function to the object.

The main function then creates a Connection object and enables event handling by calling the addOnConnectComplete method and passing it the address of the handler function.