OMG is all I can say.  

I was looking far deeper than I should have.  My latest attempt was changing CellDisplayStyle and hopefully the cell Activation property to enable/disable the edit control.  But quickly learned Activation is not a cell property. Ugh. :-)  I know I must have looked at the Hidden property many times; but, kept thinking... no I don't want to hide the cell, I want to make the checkbox in side not visible.

As for color... I suspect Gray and no visible control will be OK with the Product team.  Will play with the cell Appearance properties a bit to see if I can reach the black color they desire.

Thx for the re-pointing and pulling the leash back.  Sometimes get caught by details and don't see the forest for all the trees.

Hello,

I have created small creation filter that achieves a black background on the CheckBox column.

   class CreationFilter : IUIElementCreationFilter
    {
        #region IUIElementCreationFilter Members

        public void AfterCreateChildElements(UIElement parent)
        {
            CellUIElement objCellUIEl;
            UltraGridCell objCell;
            if (parent is CellUIElement)
            {
              objCellUIEl = (CellUIElement)parent;
              objCell = (UltraGridCell)objCellUIEl.GetContext(typeof(UltraGridCell));

               //Check if the cell is not null and it is from the correct column
               if (objCell != null && objCell.Column.Key == "BoolA")
               {
                   //Set the backColor to the desired cell
                   if (objCell.Row.Index == 5)
                   {
                       //Create and position the new UIElement
                      UIElement uiElColored = new UIElement(objCellUIEl);
                     
                       uiElColored.Rect = new Rectangle(objCellUIEl.Rect.X, objCellUIEl.Rect.Y, objCellUIEl.Rect.Width, objCellUIEl.Rect.Height);
                     
                       objCellUIEl.ChildElements.Add(uiElColored);

                      objCell.Appearance.BackColor = Color.Black;
                  }
               }

            }
        }

        public bool BeforeCreateChildElements(UIElement parent)
        {
            //do nothing
            return false;
        }
 

 And you have to apply this creation filter to your UltraGrid like the following:

  ultraGrid1.CreationFilter = new CreationFilter();

 Please let me know if you have any other questions.

TY Danko,

If I must get the black background color, I will give this a shot.  Currently the gray cell color is acceptable. I was wondering if the color could be influenced by AppStyle and or how does the filter affect styling?

Brian

Hello Brian,

Thank you for your feedback.

Please do not hesitate to contact us when you have any questions.

Danko, Mike,

I have not had a chance to code the CreationFilter, DrawFilter, or try the RowAppearance.BackColor property ideas.  I will give them a go... hopefully before weeks end.  The concept desired by Product is on a next build design and I was trying to pull ahead while at a "slow point."  Then again, I may not need either as the gray color of the inactive cell does not look bad at all... at least to me.

Once I have a moment to code the proof again, I will report back. I suspect each will have merit and function to get the desired effect.  "Your" answers have never steared me wrong.

Thx,

Brian

Hello Brian,

Please let us know if you have any further questions.

Hi Brian,

When you make the cell hidden, the gray background you see is the background of the row. So you could simply set the RowAppearance.BackColor.

I think the visible cells will also pick up this color, though, so you might need to also set the RowCellAppearance to color the visible cells. I'm not sure if this can be done through AppStylist, but I don't think so.

A DrawFilter directly controls the drawing of the objects on-screen, so it will override any application styling or property settings you apply.