Hi !

Today I played a little bit with ControlNodes. And I have some questions about that.

What I´m trying to do is to use a UserControl with a custom drawing.

Here you can find my actual test project:
https://www.logview.info/Temp/Mind/ControlNode_Test.zip

1) How can I set the Border to zero to get the Links direct to the node? There is always a gab from ~3-4 Pixels:


2) How can I set the Nodes to move only? I don´t need resizeable nodes. I only want to resize the Nodes from code. I set ShapeHandleStyle to "MoveOnly" but that won´t help.

3) If you start the project from above the custom drawing is not painted. The drawing is visible if you resize the node. Did I something wrong with my paint job? I placed the painting in the Paint event of the UserControl.

4) Is there any setting for only moving nodes within the DiagramView? At the moment I have to grap the node at the outer border to move it. But it would be great if I coult switch to a "move only" mode where the user can grap the node at any point.

5) Where can i control the size of the diagramView? I have always Scrollbars and have no idea how to avoid that.

6) Is there a awy to avoid the "big" from for resizing / moving?

As written in 2) I only need a move for the nodes.

Greetz
  Dominik

Hi Stoyan,

I´m really impressed 

I just implemented my own Node based on a DiagramNode Class. That is really amazing and works like a charm.
Thx again for your help!

I tried to append some drawing to the DRAW Methode:

	  public override void Draw(IGraphics graphics, RenderOptions options)
	  {
		Rectangle iconSizePixels = new Rectangle(0, 0, icon.Width, icon.Height);
		RectangleF imageSize = MindFusion.Utilities.DeviceToDoc(graphics, iconSizePixels);

		// Draw the icon center at the top
		graphics.DrawImage(icon,
		    Bounds.X + Bounds.Width / 2 - imageSize.Width / 2, Bounds.Y);

		// Draw the label at the bottom
		RectangleF labelBounds = RectangleF.FromLTRB(
		    Bounds.X, Bounds.Y + imageSize.Height, Bounds.Right, Bounds.Bottom);
		graphics.DrawString(label,
		    Font, Brushes.Black, labelBounds, format);

		//// Draw Rectangle at right top
		//var penn = new System.Drawing.Pen(Color.Red);
		//graphics.DrawRectangle(penn, 40, 1, 4, 4);
		Font font = new Font("Arial", 7, FontStyle.Bold, GraphicsUnit.Pixel);
		graphics.DrawString("test", font, Brushes.Aqua, 2,2);
	  } 

But DrawRectangle and DrawString are both at drawn to the diagram and not to the node  ???

Yes that helped alot.

Thx again !

Ok one last question..
What is the easiest way to detect if the user clicks on a special area (red rectangle area for example) at the node?


Greetz
   Dominik