Hi,

There are some link and node validation events you could handle to implement that. Since "shape node" is a name from the FlowChart.NET API, I assume you are using our .NET control. The validation events you need to handle are called LinkCreating, NodeCreating and LinkModifying in FlowChart.NET. If you are using FlowChartX, the corresponding event names are RequestCreateArrow, RequestCreateBox and RequestAttachArrow.

I hope that helps,
Stoyan

{ moved from FlowChartX / Discussion }