protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
// if mouse button is not pressed we have no drag operation, ...
if (e.LeftButton != MouseButtonState.Pressed)
{
this._dragStartPoint = null;
}
// but if mouse button is pressed and start point value is set we do have one
if (this._dragStartPoint.HasValue)
{
// create connection adorner
var canvas = FindCanvas();
if (canvas != null)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(canvas);
if (adornerLayer != null)
{
var adorner = new ConnectorAdorner(canvas, this);
adornerLayer.Add(adorner);
e.Handled = true;
}
}
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
// if mouse button is not pressed we have no drag operation, ...
if (e.LeftButton != MouseButtonState.Pressed) this._dragStartPoint = null;
// but if mouse button is pressed and start point value is set we do have one
if (this._dragStartPoint.HasValue)
{
// create connection adorner
var canvas = FindCanvas();
if (canvas != null)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(canvas);
if (adornerLayer != null)
{
var adorner = new ConnectorAdorner(canvas, this);
adornerLayer.Add(adorner);
e.Handled = true;
}
}
}
}