Respond to double mouse click no longer works

I have recently upgraded to the latest version of grasshopper. I hadn't upgraded in a while. I now find that my components which had a member that was derived from GH_ComponentAttributes no longer bring up a dialog box(winform) when double clicked. I override:

public override Grasshopper.GUI.Canvas.GH_ObjectResponse RespondToMouseDoubleClick(Grasshopper.GUI.Canvas.GH_Canvas sender, Grasshopper.GUI.GH_CanvasMouseEvent e)

This was working great in the previous release but no longer seems to. Any ideas on how i can get my dialog boxes working again?

Replies to This Discussion

Permalink Reply by David Rutten on November 3, 2011 at 11:21am

Hi Erik,

have you compiled against the new version? If yes, I assume there are no errors or warnings? If no, can you please test that?

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Erik Thorson on November 3, 2011 at 11:36am

Yes I am compiling using version 1.0.0.20. and i get no errors or warnings at compile time.

Permalink Reply by Erik Thorson on November 3, 2011 at 11:43am

To be more exact my code is as follows:

public class resEdges : GH_Component
    {

        public resEdges()
            : base("Restrain Edges", "ResEdge", "Restrain Edges", "RhinoBIM", "DOFs")
        {
            base.m_attributes = new HelperAttributes(this);
        }

and then in the helper attributes class i have:

class HelperAttributes : GH_ComponentAttributes
    {
        resEdges c;
        public HelperAttributes(resEdges _c)
            : base(_c)
        {
            c = _c;
        }
        public override Grasshopper.GUI.Canvas.GH_ObjectResponse RespondToMouseDoubleClick(Grasshopper.GUI.Canvas.GH_Canvas sender, Grasshopper.GUI.GH_CanvasMouseEvent e)
        {
            Rhino.RhinoApp.WriteLine("double click called\n");
            c.ShowDialog();
            return base.RespondToMouseDoubleClick(sender, e);
        }
    }

But Rhino fails to write the line "double click called"

Thanks

Permalink Reply by David Rutten on November 3, 2011 at 4:15pm

Ahhh, it's because you're being a naughty boy!

You're not supposed to assign the m_attributes field from the constructor, you're supposed to override the CreateAttributes() method.

public override void CreateAttributes()

{

m_attributes = new HelperAttributes(this);

}

the reason it used to work is because my default implementation of CreateAttributes checked to see whether the m_attributes field had already been set, and wouldn't overwrite if it had. Now it always assigns new attributes regardless, so your attributes were being overwritten with the default ones.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Erik Thorson on November 4, 2011 at 10:00am

Thanks David! Everything is up and running again.

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