Get Preselected Object Example (C#)

This example shows how to get a pre-selected object when a pre-selection event is fired.

//------------------------------------

// Preconditions:

// 1. Part, assembly, or drawing document

//    is active.

// 2. If a part or assembly document is active, then

//    pre-select (mouse over) a face.

//    - or -

//    If a drawing document is active, then pre-select

//    an edge.

// 3. Run the macro (press F5).

//

// NOTE: Tools > Options > Stop VSTA debugger on macro exit

//       must not be selected for this macro to run

//       to completion.  

//

// Postconditions:

// 1. Whenever a face is pre-selected in a part or assembly

//    document, statements confirming its pre-selection are

//    written to the Immediate window.

//    - or -

//    Whenever an edge is pre-selected in a drawing document,

//    statements confirming its pre-selection are written

//    to the Immediate window.

// 2. To stop running the macro, click Debug > Stop Debugging

//    in the Microsoft Visual Basic IDE.

//----------------------------------------

using SolidWorks.Interop.sldworks;

using SolidWorks.Interop.swconst;

using System;

using System.Collections;

using System.Diagnostics;

namespace UserSelectionPreNotifyCSharp.csproj

{

    partial class SolidWorksMacro

    {

        public PartDoc pDoc;

        public AssemblyDoc aDoc;

        public DrawingDoc dDoc;

        public void Main()

        {

            ModelDoc2 swModel;

            Hashtable openPart;

            Hashtable openAssembly;

            Hashtable openDrawing;

 

            swModel = (ModelDoc2)swApp.ActiveDoc;

 

            // Determine the document type

            // and set up event handlers

            if (swModel.GetType() == (int)swDocumentTypes_e.swDocPART)

            {

                pDoc = (PartDoc)swModel;

                openPart = new Hashtable();

            }

            else if (swModel.GetType() == (int)swDocumentTypes_e.swDocASSEMBLY)

            {

                aDoc = (AssemblyDoc)swModel;

                openAssembly = new Hashtable();

            }

            else if (swModel.GetType() == (int)swDocumentTypes_e.swDocDRAWING)

            {

                dDoc = (DrawingDoc)swModel;

                openDrawing = new Hashtable();

            }

            AttachEventHandlers();

        }

        public void AttachEventHandlers()

        {

            AttachSWEvents();

        }

        public void AttachSWEvents()

        {

            if ((pDoc != null))

            {

                pDoc.UserSelectionPreNotify += this.pDoc_UserSelectionPreNotify;

            }

            if ((aDoc != null))

            {

                aDoc.UserSelectionPreNotify += this.aDoc_UserSelectionPreNotify;

            }

            if ((dDoc != null))

            {

                dDoc.UserSelectionPreNotify += this.dDoc_UserSelectionPreNotify;

            }

        }

        private int pDoc_UserSelectionPreNotify(int SelectionType)

        {

            int functionReturnValue = 0;

            ModelDoc2 swModel;

            SelectionMgr swSelMgr;

            object SelectedObject;

            Face2 swFace;

            Feature swFeature;

            swModel = (ModelDoc2)swApp.ActiveDoc;

            swSelMgr = (SelectionMgr)swModel.SelectionManager;

            SelectedObject = (object)swSelMgr.GetPreSelectedObject();

            if (SelectionType == (int)swSelectType_e.swSelFACES)

            {

                swFace = (Face2)SelectedObject;

                swFeature = (Feature)swFace.GetFeature();

                Debug.Print("Name of feature whose face you preselected: " + swFeature.Name);

                Debug.Print("   Mouse over a different face, or click Debug > Stop Debugging to stop running macro...");

                Debug.Print(" ");

                functionReturnValue = 1;

            }

            return functionReturnValue;

        }

        public int aDoc_UserSelectionPreNotify(int SelectionType)

        {

            int functionReturnValue = 0;

            ModelDoc2 swModel;

            SelectionMgr swSelMgr;

            object SelectedObject;

            Face2 swFace;

            Feature swFeature;

            swModel = (ModelDoc2)swApp.ActiveDoc;

            swSelMgr = (SelectionMgr)swModel.SelectionManager;

            SelectedObject = (object)swSelMgr.GetPreSelectedObject();

            if (SelectionType == (int)swSelectType_e.swSelFACES)

            {

                swFace = (Face2)SelectedObject;

                swFeature = (Feature)swFace.GetFeature();

                Debug.Print("Name of feature whose face you preselected: " + swFeature.Name);

                Debug.Print("   Mouse over a different face, or click Debug > Stop Debugging to stop running macro...");

                Debug.Print(" ");

                functionReturnValue = 1;

            }

            return functionReturnValue;

        }

        private int dDoc_UserSelectionPreNotify(int SelectionType)

        {

            int functionReturnValue = 0;

            ModelDoc2 swModel;

            SelectionMgr swSelMgr;

            object SelectedObject;

            Edge swEdge;

            Body2 swBody;

            swModel = (ModelDoc2)swApp.ActiveDoc;

            swSelMgr = (SelectionMgr)swModel.SelectionManager;

            SelectedObject = (object)swSelMgr.GetPreSelectedObject();

            if (SelectionType == (int)swSelectType_e.swSelEDGES)

            {

                swEdge = (Edge)SelectedObject;

                swBody = (Body2)swEdge.GetBody();

                Debug.Print("Name of body whose edge you preselected: " + swBody.Name);

                Debug.Print("   Mouse over a different edge, or click Debug > Stop Debugging to stop running macro...");

                Debug.Print(" ");

                functionReturnValue = 1;

            }

            return functionReturnValue;

        }

        /// <summary>

        /// The SldWorks swApp variable is pre-assigned for you.

        /// </summary>

        public SldWorks swApp;

    }

}