Override Selection Color in GridListControl

[Aaron Ching]

Hi,

How can I override the selections backcolor in GridListControl? Currently, it's fixed at the lightblue color and alpha-blend with the backcolor of the cell. Even better, can I use different backcolor without alpha-blending on different cells in the selections?

Aaron

[Aaron Ching]

Similar question:

Can I override the selection backcolor in the regular GridControl? I want to control the selection backcolor very precisely, without any alpha-blending or default coloring.

[Administrator]

If you want to use the grid's selection drawing support, it is either use alphablending or inverting the colors that exist in the selected cells. Usually alphablending gives a nicer look.

If you want to manage things yourself, you can try using PrepareViewStyleInfo on the embedded GridControl.

//in formload
gridListControl1.Grid.PrepareViewStyleInfo += new GridPrepareViewStyleInfoEventHandler(grid_PrepareViewStyleInfo);
gridListControl1.Grid.AlphaBlendSelectionColor = Color.FromArgb(1, 0, 0, 0);


//the handler
private void grid_PrepareViewStyleInfo(object sender, GridPrepareViewStyleInfoEventArgs e)
{
	if(this.ListBox1.Grid.Selections.GetSelectedRows(true, false).AnyRangeIntersects(GridRangeInfo.Cell(e.RowIndex,e.ColIndex)))
	{
		e.Style.BackColor = Color.LightGoldenrodYellow;
	}
}

[Aaron Ching]

How can I turn off the invert coloring on selected cells in GridControl? Even with your suggested codes, my GridControl is still showing the inverted color on selected cells.

[Aaron Ching]

BTW, your suggested codes work fine if default value is used for AllowSelection. However, the color inversion occur when GridSelectionFlags.Shift and GridSelectionFlags.Multiple are used.

[Administrator]

> BTW, your suggested codes work fine if default value is used for AllowSelection. However, the color inversion occur when GridSelectionFlags.Shift and GridSelectionFlags.Multiple are used.
>

Make sure you combine the Shift and Multiple flags together with GridSelectionFlags.AlphaBlend. Then the selection should not be inverted.

Stefan

[Aaron Ching]

Hi,

I did add the GridSelectionFlags.AlphaBlend as follows:

this.AllowSelection = GridSelectionFlags.AlphaBlend | GridSelectionFlags.Multiple | GridSelectionFlags.Shift;

The color inversion issue is solved but now the multiple and shift selection stop working.

Would this be a bug?

-- Aaron

[Administrator]

Try also setting GridSelectionFlags.Row|GridSelectionFlags.Cell

Without "Cell" any selection mechanism won't work.

Stefan