How to change object from context menu?
Accepted solution
Hi,
By my side, I define two separated classes:
- a class for the context menu with two static methods: Attach() and Detach() to add or remove the context menu and the MenuItem.Click() event handler which calls a command
- a class implementing IextensionApplication to add the context menu at startup in which the command is defined. The command uses the UsePickSet CommandFlag and some PromptSelectionSettings so that it works with a single entity and can be used from the command line or from the context menu.
Here's a little sample:
using System;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Colors;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.Windows;
using AcAp = Autodesk.AutoCAD.ApplicationServices.Application;
namespace PointEdit
{
public class Commands : IExtensionApplication
{
public void Initialize()
{
ContextMenu.Attach();
}
public void Terminate()
{
ContextMenu.Detach();
}
[CommandMethod("PointEdit", CommandFlags.UsePickSet)]
public void PointEdit()
{
Document doc = AcAp.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
TypedValue[] filter = new TypedValue[1] { new TypedValue(0, "POINT") };
PromptSelectionOptions pso = new PromptSelectionOptions();
pso.SingleOnly = true;
pso.SinglePickInSpace = true;
pso.SelectEverythingInAperture = true;
pso.RejectObjectsOnLockedLayers = true;
PromptSelectionResult psr;
do
{
psr = ed.GetSelection(pso, new SelectionFilter(filter));
if (psr.Status != PromptStatus.OK) return;
} while (psr.Value.Count > 1);
using (Transaction tr = db.TransactionManager.StartTransaction())
{
DBPoint pt = (DBPoint)tr.GetObject(psr.Value.GetObjectIds()[0], OpenMode.ForWrite);
pt.Color = Color.FromColorIndex(ColorMethod.ByAci, 30);
tr.Commit();
}
}
}
class ContextMenu
{
private static ContextMenuExtension cme;
internal static void Attach()
{
cme = new ContextMenuExtension();
MenuItem mi = new MenuItem("PointEdit");
mi.Click += new EventHandler(Edit);
cme.MenuItems.Add(mi);
RXClass rxc = Entity.GetClass(typeof(DBPoint));
AcAp.AddObjectContextMenuExtension(rxc, cme);
}
internal static void Detach()
{
RXClass rxc = Entity.GetClass(typeof(DBPoint));
AcAp.RemoveObjectContextMenuExtension(rxc, cme);
}
private static void Edit(object sender, EventArgs e)
{
Document doc = AcAp.DocumentManager.MdiActiveDocument;
doc.SendStringToExecute("POINTEDIT ", true, false, true);
}
}
}
