Hello,

I'm still using FC.NET 4.0.3

Next to links between nodes I also want to be able to draw lines, no free form lines. Just drag from one point of the chart to another and get a line between them.

It almost works now, but I have to keep setting the origin en destination to DummyNode (and reset the controlpoints) so that they don't connect to the nodes when I drop the enpoints on top of a node.

Now the only problem remaining is that when I create a new arrow (that is a "line") and drag the endpoint over a node, the endpoint jumps to the border of that node.

This behaviour was also present with the startpoint (so the first endpoint) but I've been able to disable that behaviour with:

    Private Sub OnArrowCreated(ByVal sender As System.Object, ByVal e As MindFusion.Diagramming.WinForms.ArrowEventArgs) Handles mMainFlowChart.ArrowCreated
	  e.Arrow.Tag = Me.mBusiness.DrawingMode
	  If e.Arrow.Origin.Equals(e.Arrow.Destination) AndAlso _
		    Me.mBusiness.DrawingMode = DrawingModes.Normal Then
		Me.mMainFlowChart.DeleteObject(e.Arrow)
	  Else
		If Me.mBusiness.DrawingMode = DrawingModes.Line Then
		    ' When line, we don't want anything connecting anything:
		    Dim mStartPoint As PointF = e.Arrow.ControlPoints(0)
		    Dim mEndPoint As PointF = e.Arrow.ControlPoints(e.Arrow.ControlPoints.Count - 1)
		    e.Arrow.Origin = New DummyNode(Me.mMainFlowChart)
		    e.Arrow.ControlPoints(0) = mStartPoint
		    e.Arrow.Destination = New DummyNode(Me.mMainFlowChart)
		    e.Arrow.ControlPoints(e.Arrow.ControlPoints.Count - 1) = mEndPoint
		    ' Also, make sure the crossings are never drawn
		    e.Arrow.DrawCrossings = False
		    e.Arrow.UpdateFromPoints()
		End If
		Me.mBusiness.HandleCreatedArrow(e.Arrow)
		Me.SetDirty()
	  End If
    End Sub
 

I do the same kind of stuf in ArrowModified.

SnapToAnchor is in "OnCreate" (I wish I wish there was a "None" with that one) and the border snapping is turned off when I'm in the "line drawing mode".


However, isn't there a more convenient way to just draw a line that is not related to an arrow?

I'm thinking about inheriting my own arrow class or even start from a lower object... but that's probably to much work in the time span I have.

Thanks allready!

Works like a charm, thanks.

One last question, any idea on how to set the arrows so that you can move the entire arrow at once and not just the end points? Can't seem to find it, HandleStyles isn't enough it seems.

Thanks, you helped me a lot.

Just one little I noticed maybe a bit off topic though: when creating a new arrow, am I correct to assume that "AlignToGrid" has no effect? (I'm pretty sure I'm not setting it to false anywhere)

It's a bit inconvenient, it would be good if on arrow creation, the new points would also align to the grid (I'm quite surprised this is not possible, so I'm thinking I'm doing something wrong).