Hi Joanna,

The only way I can think of doing this is to enumerate all points in the AnchorPattern object using the AnchorPointCount property and GetAnchorPoint method, and find the nearest point yourself. In FlowChartX that's done as shown below

float nearestDist = 2 * (float)max(
	nodeRect.right - nodeRect.left, nodeRect.bottom - nodeRect.top);

for (unsigned i = 0; i < anchorPattern->points.size(); i++)
{
	AnchorPoint ap = anchorPattern->points[i];
	if (incoming && !ap.allowIncoming) continue;
	if (!incoming && !ap.allowOutgoing) continue;

	POINT pos = ap.getPos(nodeRect);
	float dx = float(pos.x - pt.x);
	float dy = float(pos.y - pt.y);
	float ptDist = (float)sqrt(dx*dx + dy*dy);
	if (ptDist < nearestDist)
	{
		nearestDist = ptDist;
		nearestPt = pos;
		anchorIdx = i;
	}
}

POINT AnchorPoint::getPos(RECT nodeRect)
{
	POINT pt = {
		nodeRect.left + (nodeRect.right - nodeRect.left) * x / 100,
		nodeRect.top + (nodeRect.bottom - nodeRect.top) * y / 100 };
	return pt;
}
 

You will need to replace the internal methods with ones from the public API.

I hope that helps,
Stoyan

Hi Joanna,

Yes, nodeRect should contain the coordinates of the Arrow.ExpectedDestination node. You can use the Left/Top/Right/Bottom properties of the Box class to get the coordinates.

Stoyan

Hi, Stoyan

I had another question about the ArrowItem.

Is there any way to release following functions?
The function is like this: when the user create arrows on the GUI, the color of the arrows is the same with the color of the origin anchor of the arrow.
That is to say, when the user draw an arrow from a red anchor, the arrow is red; and from blue anchor, then the arrow is blue.

When I look over the Help File of FlowChartX, I found there is an event called "InitializeArrow", it seems can realize this kind of function.
But when I intent to get the information of the color of the origin anchor of the arrow, it gave out error. Because in the function of "InitializeArrow", the return value of the arrow.get_OrgnAnchor is (-1). It seems that in this function, we still cannot get the information of the origin anchor of the arrow.
Then is there any other way for me to get the information of the origin anchor of the arrow in the function of "InitializeArrow"?

Sorry for so many question.
Thanks!
Joanna

Hi, Stoyan

Thank you!
With your help, all things work just as I intent to. Thank you!

Another tough question, but if it is impossible or difficult to realize it, that's ok.
The question is like this:
When the segment of the arrow is set as "3", and the position of the arrowhead is in the center of the arrow, then there will be arrowhead in each segment of the arrow. Is it possible to only show arrowhead in the second or longest segment? It will make the diagram look cleaner.


Thanks in advance,
Joanna

Ok, thank you the same in any way!