Hi richwawr: Yes I am using Visual Studio, and I actually created the code with template and then modified it. I am using the COM approach because COM can still do more then Add-in, even though Add-in is easy to deploy. The reason I why I was not using the custom tool template at the beginning is that: I don't actually want to create a tool with a button on the ArcMap toolbar. Instead I want to make a button on a windows form to bring user into a state of picking features on the map, so I tried to handle the map events first. However, I still end up building a tool (but hide it from the toolbar) 🙂 I just use the following derived BaseTool classes to allow the state of ArcMap tool rollback to original after user has interacted. Any better idea? Thank you! public abstract class RollbackableToolBase : BaseTool { protected IApplication m_Application = null; public ICommandItem RollbackTool { get; set; } public override sealed void OnCreate(object hook) { m_Application = hook as IApplication; } } public class RollbackableTool1 : RollbackableToolBase { public RollbackableTool1 () { Result = null; } // the shoot event public event RanEventHandler Ran= null; public object Result { get; private set; } public override void OnMouseDown(int button, int shift, int x, int y) { // interact with the screen and get the result // restore the current tool m_Application.CurrentTool = this.RollbackTool; } } public delegate void RanEventHandler(object sender, EventArgs e);
Are you using Visual Studio? There are templates in VS to create custom tools for ArcMap. You can create them as COM extensions (need an installer to deploy) or using the newer Add-in framework. I recommend the Add-in method because it makes deployment much easier. It looks like your code is attempting to use the COM method. There is a lot more to it than what you have and yes it has to be registered. Do you have the template?
