GoBasicNode slightly changes position by image change

GoDiagram (6 and previous)
1

Hello,

Something weird happens when I change the image of a GoBasicNode.
For starters I am creating a GoImage:

Public Sub ShowStatus(Node As GobasicNode, Status as String)
Dim image As New GoImage()
image.NameIsUri = True
image.Selectable = False
Dim margin As SizeF = Node.MiddleLabelMargin

    image.SetSpotLocation(2, Node, 2, margin.Width / 2, margin.Height / 2)
    
        Select Case Status 'let's assume that the status is 0 at first
            Case "0"
                image.Image = (An Image from my Resources)
            Case "1"
                image.Image = (An Image from my Resources)
            Case "2"
                image.Image = (An Image from my Resources)
            Case Else
                image.Image = (An Image from my Resources)
        End Select
        
    Node.Add(image) 'the Image is added to the node
End Sub

Everything good sofar.But when i try to change this image within the Node something kinda weird happens:
For example after a right click action where the image should change I do the following:

Node.Image.Remove() ‘the Image is removed from the node
ShowStatus(Node, 2)’.

So now that the Image in the Node has successfully changed the weirdest thing happens. The whole Node is moved a few pixels to the downright direction.Just a few pixels.Enough though for the user to notice it. When I reload the form the Node is in its right place.

What can I do to eliminate this tiny change?
Please help

2

Are all the images the exact same size? Are you still using the Shape object in GoBasicNode?

GoBasicNode doesn’t have an Image property. You’ve added that, I assume. Do you handle the layout in LayoutChildren?

Typically you would have the Image “set” routine Remove the old and set the new instead of doing the 2 step Remove / SetStatus.

For Example, here is how GoIconicNode handles the Icon property:

public virtual GoObject Icon {
  get { return myIcon; }
  set {
    GoObject old = myIcon;
    if (old != value) {
      CopyPropertiesFromSelectionObject(old, value);
      if (old != null)
        Remove(old);
      myIcon = value;
      if (value != null)
        InsertBefore(null, value);
      Changed(ChangedIcon, 0, old, NullRect, 0, value, NullRect);
      if (!this.Initializing && this.Port != null && this.Port.PortObject == old)
        this.Port.PortObject = value;
    }
  }
}

You probably don’t need the CopyPropertiesFromSelectionObject or PortObject handling.

3

Yes. Images are the same size. The whole Node moves slightly not just the image within. As you assumed, I have added the Image Property. Actually I am using the PersonNode from the DatasetDemo example(with a few changes and additions). Now that you mention it I do use the LayoutChildren to handle the layout and the problem is spotted in this function and specifically in the
back.Bounds = New Rectangle(center.X - newWidth / 2, center.Y - newHeight / 2, newWidth, newHeight)
I had a tiny change there where :
back.Bounds = New Rectangle(center.X - newWidth / 2, center.Y - newHeight / 2, newWidth + 5, newHeight + 5).

Those little fives turned out to do the damage…everytime something happend that would trigger the LayoutChildren would move the Node +5.

Those are now removed and nothing moves :)
Thanks for your help!!