Hi,

There is no built-in support for that. I guess you could implement it using a custom Behavior class. First take a look at this topic:

http://mindfusion.org/cgi/Forum/YaBB.pl?board=fcnet_disc;action=display;num=1153...

It shows both how to override Behavior and detect whether the mouse is over an anchor point. You can modify that code so that StartDraw returns a new Box object representing the dragged point. When the user drops the box (BoxModified event), update the anchor point position and delete the box. This result from Behavior.StartDraw-

return new InteractionState(theAnchorBox, 8, Action.Modify);

will directly start moving the box along with the mouse pointer. You could allow this if the Shift flag in Control.ModifierKeys is set, otherwise let the user start drawing an arrow.

I hope that helps,
Stoyan

Set the new coordinates for

arrow.ControlPoints[0]

or

arrow.ControlPoints[arrow.ControlPoints.Count-1]

depending on which end of the arrow is affected, and call

arrow.UpdateFromPoints();

After I moved an anchor I am updating arrow from control points but there is a new problem.

If the arrow style is cascade when I change one of the ends the arrow style is still cascade but one of the arrow part is polyline.

How to handle this properly?

Or just set the coordinates of the point next to the first or last one.

When I am moving a box the arrow follow the box and style stay cascade.

How to do the same when I move the anchor point?

If you don't need the arrow to update itself while the box is moving, just handle BoxModified and update the two points that define the arrow's first or last segment.

The control won't update automatically the coordinates of ControlPoints[1] if you set ControlPoints[0].  The next-to-the-last point must have either the same X or the same Y coordinate as the last one, depending on the arrow's direction. So after setting ControlPoints[0], also set ControlPoints[1] to preserve the horizontal/vertical orientation of the segment.

8)