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Create a Callout in a Model View Example (C#)

This example shows how to create a callout in a model view.

// Preconditions:  
// 1. Open a part document.
// 2. Select:
//    Project > Add Reference > .NET > SolidWorks.Interop.swpublished
// Postconditions:
// 1. A callout with one row is created in the first model view.
// 2. Press F5 three more times to add a callout to three other model views.

// NOTE: Because the model is used elsewhere,
// do not save changes when closing it.
// ---------------------------------------------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using SolidWorks.Interop.swpublished;
using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace ModelViewCallout_CSharp.csproj
partial class SolidWorksMacro

ModelDoc2 swModelDoc;
ModelDocExtension swModelDocExtn;
ModelViewManager ViewMgr;
ModelView swModelView;
Callout Viewcallout;

CalloutHandler handle = new CalloutHandler();

public void Main()
            swModelDoc = (
            swModelDocExtn = swModelDoc.Extension;

            ViewMgr = swModelDoc.ModelViewManager;
            ViewMgr.ViewportDisplay = (
            swModelView = (
while (((swModelView != null)))
                Viewcallout = swModelView.CreateCallout(1, handle);
                Viewcallout.SkipColon =
                Viewcallout.SetTargetPoint(0, 0.0, 0.0, 0.0);
                swModelView = (


public SldWorks swApp;


public class CalloutHandler : SwCalloutHandler

public bool OnStringValueChanged(object pManipulator, int RowID, string Text)

Debug.Print("Text: " + Text);
Debug.Print("Row: " + RowID);

return true;



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