Hi,

Quote:


The Flowcharter sample project shows how to create a toolbox that allows drag-and-drop creation of diagram nodes.

Quote:


It should be easy to extend the toolbox code from the Flowcharter sample to support other types of nodes. E.g. add a new string property to the NodeDragItem class that identifies the type of node - "Shape", "Table", etc. or your custom type id. In the diagramView_DragDrop handler create a node instance of the respective type, as specified in the NodeDragItem objects extracted from e.Data.

Quote:


Yes, you can mix nodes from different types in the same diagram.

I hope that helps,
Stoyan

There are only a few changes needed. This modified MainForm.cs adds a table to the top of the toolbox:

https://mindfusion.org/_samples/MainForm.zip

Below are outlined the differences between it and the original sample.

First, the Listbox.Sort property is now set to false in order to allow displaying the table at the top. The table item is added like this:

_nodes = new Node[]
{
     new Node("Table", "Entity"),
     ...

The OnDrawItem handler checks the NodeType property, and if it's a "Table" the drawing code looks like this:

t = _hidden.Factory.CreateTableNode(1, 1, 24, 24);
t.Brush = new SolidBrush(Color.White);

The DragDrop handler adds a case for NodeType == "Table" too:

TableNode t = diagram.Factory.CreateTableNode(pt, new SizeF(30, 40));
t.Brush = new SolidBrush(Color.White);

And the Node class has a new string NodeType property and a new overloaded constructor to initialize it:

public Node(AnchorPattern anchor,
     Shape template, string name)
{
     _anchor = anchor;
     _template = template;
     _name = name;
     nodeType = "Shape";
}

public Node(string nodeType, string name)
{
     _anchor = null;
     _template = null;
     _name = name;
     this.nodeType = nodeType;
}

I hope that helps,
Stoyan

Hi,

Set diagram.TableRowCount to 0 and all new tables will have 0 rows initially. Or after creating tbl set tbl.RowCount = 0.

I hope that helps,
Stoyan

You could call ZoomToRect to zoom to a specific area of the chart /possibly one that encloses an item or a group of items/.

Grouping has many uses, e.g.

- you could build composite shapes as in the Entities sample project
- create additional link labels by attaching nodes to the link segments
- build a tree where dragging the parent will also move the child items
- create a container which when dragged moves the contained items (the Form Designer in the demo)

You can see some other groups in the demo screens - in "Photo Album", Genealogy tree", "Hierarchy Chart", "Grouping", "Network".

I hope that helps,
Stoyan

Hi,

DrawLinks only allows drawing links between nodes, while the other Behavior types also let users draw nodes of the built-in or custom types. DrawLinks should be fine when you let your users create nodes via drag-and-drop. You can select more than one objects using CTRL.

I hope that helps,
Stoyan

Hi,

Find this line in MainForms.cs

diagram.Selection.AllowMultipleSelection = false;

and change the property value to "true".

Stoyan

Hi,

Add an Image property to the flowcharter's Node class, and add a new overloaded Node constructor that receives an Image argument to initialize the property. In the NodeList_OnDrawItem and diagramView_DragDrop event handlers assign that image to the table and shape nodes created there.

I hope that helps,
Stoyan