Hi,

TreeLayout ignores arrows that are not part of the flowchart's spanning tree, and they will remain curved if your default ArrowStyle is set to Bezier. After calling Arrange, try looping over flowchart.Arrows and reset them to three-segment polyline links:

fc.Arrange(treeLayout);
foreach (Arrow a in fc.Arrows)
{
    if (a.Style == asBezier)
    {
        a.SegmentCount = 3;
        a.Style = asPerpendicular;
    }
} 

I hope that helps,
Stoyan

Quote:


These are the arrows that TreeLayout ignores as not being part of the tree and you reset to default 3-segment shape. With Pro edition you could call their Route method to avoid overlaps with nodes. In standard edition you can remove the overlaps only by specifying new control point positions via the CtrlPt* properties.

Quote:


You will have to code this yourself. None of the built-in layout classes arranges nodes to the right and bottom of decision boxes specifically. Doing that for a single decision box looks like this in VB:

If box.Style = bsRhombus Then
    Dim n1 As box, n2 As box
    Set n1 = box.OutgoingArrows(0).DestinationBox
    Set n2 = box.OutgoingArrows(1).DestinationBox
    n1.MoveTo box.right + 30, box.top
    n2.MoveTo box.left, box.bottom + 30
    box.OutgoingArrows(0).Style = asPolyline
    box.OutgoingArrows(0).Segments = 1
    box.OutgoingArrows(1).Style = asPolyline
    box.OutgoingArrows(1).Segments = 1
End If
 

If your graphs are limited to at most two arrows going out from a decision box and one arrow from a regular box, you could probably devise some algorithm to arrange them in a grid, where each decision adds a new row and column to the grid, while other boxes are added to existing rows or columns depending on layout orientation.

I hope that helps,
Stoyan

Chance is most of the ignored arrows for which you reset SegmentCount and Style will intersect nodes (unless the nodes are close to each other), so just call Route on them. Calling Route on arrow between nearby nodes will not change its path much. Otherwise you could use the Arrow.IntersectsNode method to find out if an arrow intersects a specific node, looping over all nodes and calling Route when you find an intersection.

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I hope that helps,
Stoyan

Hi,

We have now upgraded from Standard edition to Pro edition. As per your suggestion, I call Arrow.IntersectsNode to find the arrows which are drawn over the boxes. Unfortunately, the Arrow.IntersectsNode method returns true for all of the arrows.

Any suggestions?

Regards,
Madhu.

Thanks again. It solved the problem.