I have created a class that inherits from controlhost. I can successfully add the class to the flowchart and build an anchor pattern, but when I try to draw an arrow from one of the anchor I get the mouse indicator that it is not allowed. Any ideas?

Also, is there an event that fires when you mouse over an anchor or any way to determine when the mouse enters an anchor.

Thanks

I am wanting to draw anchors at the middle point of each listview item of the list view that the control host is inheriting. I was having trouble getting the anchor points to line up exactly with the hosted listview item, so I inherited and was able to get it to work.

Below is the code. Thanks in advance

Inheriting Class
-----------------------------

using System;
using System.Collections.Generic;
using System.Text;

namespace Prototype
{
public class TestClass : MindFusion.Diagramming.WinForms.ControlHost
{
private System.Windows.Forms.ColumnHeader columnHeader1;
public System.Windows.Forms.ListView listView1;

public TestClass(MindFusion.Diagramming.WinForms.FlowChart flow) : base(flow)
{
System.Windows.Forms.ListViewItem listViewItem1 = new System.Windows.Forms.ListViewItem("One");
System.Windows.Forms.ListViewItem listViewItem2 = new System.Windows.Forms.ListViewItem("Two");
System.Windows.Forms.ListViewItem listViewItem3 = new System.Windows.Forms.ListViewItem("Three");
System.Windows.Forms.ListViewItem listViewItem4 = new System.Windows.Forms.ListViewItem("Four");
System.Windows.Forms.ListViewItem listViewItem5 = new System.Windows.Forms.ListViewItem("Five");
System.Windows.Forms.ListViewItem listViewItem6 = new System.Windows.Forms.ListViewItem("6");
System.Windows.Forms.ListViewItem listViewItem7 = new System.Windows.Forms.ListViewItem("7");
System.Windows.Forms.ListViewItem listViewItem8 = new System.Windows.Forms.ListViewItem("8");
System.Windows.Forms.ListViewItem listViewItem9 = new System.Windows.Forms.ListViewItem("9");
System.Windows.Forms.ListViewItem listViewItem10 = new System.Windows.Forms.ListViewItem("99");
this.listView1 = new System.Windows.Forms.ListView();
this.columnHeader1 = new System.Windows.Forms.ColumnHeader();

this.listView1.BackColor = System.Drawing.SystemColors.MenuHighlight;
this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
this.columnHeader1});
// this.listView1.Dock = System.Windows.Forms.DockStyle.Fill;
this.listView1.FullRowSelect = true;
this.listView1.GridLines = true;
this.listView1.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
this.listView1.Items.AddRange(new System.Windows.Forms.ListViewItem[] {
listViewItem1,
listViewItem2,
listViewItem3,
listViewItem4,
listViewItem5,
listViewItem6,
listViewItem7,
listViewItem8,
listViewItem9,
listViewItem10});
this.listView1.Location = new System.Drawing.Point(0, 0);
this.listView1.Name = "listView1";
this.listView1.Size = new System.Drawing.Size(400, 170);
this.listView1.TabIndex = 0;
this.listView1.UseCompatibleStateImageBehavior = false;
this.listView1.View = System.Windows.Forms.View.Details;
//
// columnHeader1
//
this.columnHeader1.Text = "Name";
this.columnHeader1.Width = 220;

this.Control = this.listView1;

this.listView1.MouseClick += new System.Windows.Forms.MouseEventHandler(listView1_MouseClick);
}

void listView1_MouseClick(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.Selected = true;
}


}
}


Use of Class
--------------------------------------------

TestClass host = new TestClass(this.flowChart1);
host.Resize(300, 250);
host.HandlesStyle = HandlesStyle.EasyMove;
host.CtrlMouseAction = HostMouseAction.PassToControl;
host.AllowIncomingArrows = true;
host.AllowIncomingArrows = true;
host.Locked = false;
host.IgnoreLayout = true;



Console.WriteLine("Box Diff: " + Convert.ToString( host.BoundingRect.Y - host.listView1.Location.Y));

AnchorPattern anchor = new AnchorPattern();
float pos = 0;
int diff = 4;

foreach (ListViewItem item in host.listView1.Items)
{

pos = (item.Bounds.Y + diff) + (item.Bounds.Height / 2);
pos = pos / (host.BoundingRect.Height);

//determine if item is visible
if ((item.Bounds.Y + (item.Bounds.Height)) < host.BoundingRect.Height)
{
AnchorPoint point = new AnchorPoint(100,pos * 100,true, true, MarkStyle.Circle, Color.Red);
point.ToolTip = item.Text;
point.Tag = item;
anchor.Points.Add(point);

Console.WriteLine("Point: " + Convert.ToString((pos * 100)) + " Anchor: " + point.Y.ToString());
}
else
{
Console.WriteLine("Not visible");
}


}

host.AnchorPattern = anchor;


this.flowChart1.ZoomToFit();

}

Changing to Square Handles did not seem to change anything. Any other ideas?

We received your test application - it seems the problem happens because the ControlHost nodes are not added to the flowchart. Try calling the FlowChart.Add() method:

TestClass host = new TestClass(this.flowChart1);
host.Resize(300, 250);
host.HandlesStyle = HandlesStyle.SquareHandles;
host.CtrlMouseAction = HostMouseAction.PassToControl;
flowChart1.Add(host);
 

Stoyan