WorkflowShape.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Core.Presentation / System / Activities / Core / Presentation / WorkflowShape.cs / 1305376 / WorkflowShape.cs
                        

                        
                            using System; 
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Controls; 
using System.Windows;
using System.Windows.Input; 
 
namespace System.Activities.Core.Presentation
{ 
    //Deriving from label to avoid implementing automation peer.
    class WorkflowShape : Label
    {
        bool isMouseDown = false; 
        Point lastMouseDownPoint;
        public const double dragStartThreshold = 5; 
        public const string WorkflowShapeFormat = "WorkflowShapeFormat"; 

        protected override void OnMouseDown(System.Windows.Input.MouseButtonEventArgs e) 
        {
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                isMouseDown = true; 
                lastMouseDownPoint = e.GetPosition(this);
                e.Handled = true; 
            } 

            base.OnMouseDown(e); 
        }
        protected override void OnMouseUp(System.Windows.Input.MouseButtonEventArgs e)
        {
            isMouseDown = false; 
            e.Handled = true;
            base.OnMouseUp(e); 
        } 

        protected override void OnMouseMove(System.Windows.Input.MouseEventArgs e) 
        {
            if (e.LeftButton == MouseButtonState.Pressed && isMouseDown)
            {
                Point newPosition = e.GetPosition(this); 
                Vector difference = newPosition - lastMouseDownPoint;
                if (difference.Length >= dragStartThreshold) 
                { 
                    //DoDragDrop;
                    DataObject dataObject = new DataObject(WorkflowShapeFormat, this); 
                    DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Move | DragDropEffects.Copy | DragDropEffects.Scroll | DragDropEffects.Link);

                    isMouseDown = false;
                    e.Handled = true; 
                }
            } 
            base.OnMouseMove(e); 
        }
    } 



 

 
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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