Set value for MD Slider upstreams? [Solved]

Grasshopper Developer
1

I’m trying to reset the value of a MD Slider upstreams via code. “Visually” the MD slider is reset to desired starting position (0.5, 0.5) but I’m not receiving that Value back from its output. Only after I poke on it with the mouse, the value that was set is emitted from the MD slider.

Why is that?

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The code which did reset the slider (pictured above) which still is stuck on (0.48, -0.57, 0) despite the fact that the slider’s handle was moved to the middle:

  RunScript
  {
    var input = Component.Params.Input[0];
    m_mdslider = input.Sources[0].Attributes.DocObject as Grasshopper.Kernel.Special.GH_MultiDimensionalSlider;

    if (Reset)
    {
      var ghdoc = Component.OnPingDocument();
      var _call_reset = new GH_Document.GH_ScheduleDelegate(Callback_Reset);
      if (ghdoc != null && _call_reset != null)
        ghdoc.ScheduleSolution(1, _call_reset);
    }
  } // end RunScript

// < Custom additional code >

  Grasshopper.Kernel.Special.GH_MultiDimensionalSlider m_mdslider;

  private void Callback_Reset(GH_Document doc)
  {
    // reset to middle
    var _pt = new Point3d(0.5, 0.5, 0.0);
    m_mdslider.Value = _pt;
    m_mdslider.Attributes.ExpireLayout();
    //m_mdslider.Attributes.PerformLayout();
    m_mdslider.OnDisplayExpired(true);
    Component.ExpireSolution(false);
  }

So how can I poke on the slider to make it yield the value it should have according to the value that was set?

// Rolf

2

OK, I found out that expiring the slider will do the trick:

  private void Callback_Reset(GH_Document doc)
  {
    // reset to middle
    var _pt = new Point3d(0.5, 0.5, 0.0);
    m_mdslider.Value = _pt;
    m_mdslider.Attributes.ExpireLayout();
    m_mdslider.OnDisplayExpired(true);

    m_mdslider.ExpireSolution(false);     // <--- + this

    Component.ExpireSolution(false);
  }

// Rolf