RevitSdkSamples/snapshot/2008/SDK/Samples/HelloWorld/CS/Command.cs

//
// (C) Copyright 2003-2007 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
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using System;
using System.Collections.Generic;
using System.Text;

using Autodesk.Revit;
using System.Windows.Forms;

namespace Revit.SDK.Samples.HelloWorld.CS
{
    /// <summary>
    /// Main class just pop up a message box show "Hello World".
    /// </summary>
    public class Command: IExternalCommand
    {
        #region IExternalCommand Members
        
        /// <summary>
        /// Implement this method as an external command for Revit.
        /// </summary>
        /// <param name="commandData">An object that is passed to the external application
        /// which contains data related to the command,
        /// such as the application object and active view.</param>
        /// <param name="message">A message that can be set by the external application
        /// which will be displayed if a failure or cancellation is returned by
        /// the external command.</param>
        /// <param name="elements">A set of elements to which the external application
        /// can add elements that are to be highlighted in case of failure or cancellation.</param>
        /// <returns>Return the status of the external command.
        /// A result of Succeeded means that the API external method functioned as expected.
        /// Cancelled can be used to signify that the user cancelled the external operation 
        /// at some point. Failure should be returned if the application is unable to proceed with
        /// the operation.</returns>
        public IExternalCommand.Result Execute(ExternalCommandData commandData, 
            ref string message, ElementSet elements)
        {
            MessageBox.Show("Hello World");
            return IExternalCommand.Result.Succeeded;
        }

        #endregion
    }
}