Hi,

Should the gradient change along the link's length, or orthogonally along the width? I don't think GDI+ supports any of these for a Bezier curve, but it's possible to implement a custom gradient.

Stoyan

With the 'on the client side' do you mean you are not using the Windows Forms control? WinForms / GDI+ does not support such gradients, but indeed you can implement them by drawing several times with a different width:

private void diagram_DrawLink(object sender, DrawLinkEventArgs e)
{
	for (float width = 2; width > 0; width -= 0.5f)
	{
		Color color = Color.FromArgb(40, Color.Red);
		System.Drawing.Pen pen = new System.Drawing.Pen(color, width);
		e.Graphics.DrawBeziers(pen, e.Link.ControlPoints.GetArray());
		pen.Dispose();
	}
} 

E.g. that code creates kind of glow effect where the color is more solid at the center, since it is merged with the background from the previous DrawBeziers.

I don't think a built-in gradient would be much faster, and there shouldn't be that big delay unless you draw hundreds of links.

I hope that helps,
Stoyan

Stoyo, one more thing if you would. Why is it that IntermediateShapes aren't drawn on Bezier links? The code clearly states that "draw arrowheads, intermediate are skipped for Bezier links".

If you ever decide to add it, you might also consider the following. Some of our links are sometimes very long, and sometimes cross the screen. The result is that you don't have any clue about their direction. I was planning on adding "Intermediate Shapes" every N units on the links, so you can always see the direction of the link, no matter how long it is. That could possibly be a nice addition to Flowchart. In the meanwhile, I'll add that on our side through custom drawing.

Alex.