CellBackGround

[Stefan Tsalapatis]

Hi,
In an overriden DrawCell :
How to draw the cell interior when
is in the CurrentRow ?
I want to highlight the CurrentRow
but from DrawCell or another overriden
event.
I do not want to use the
PrepareViewStyleInfo.

Thanks

Stefan

[Administrator]

You can try using the CellDrawn event to over-paint the selection color. (You may only need the e.ColIndex == cc.ColIndex && e.RowIndex == cc.RowIndex checks.)

private void gridControl1_CellDrawn(object sender, GridDrawCellEventArgs e)
{
	GridCurrentCell cc = this.gridControl1.CurrentCell;
	if(e.ColIndex == cc.ColIndex && e.RowIndex == cc.RowIndex
		&& this.gridControl1.Selections.Ranges.AnyRangeContains(GridRangeInfo.Cell(e.RowIndex, e.ColIndex))
		&& !cc.IsEditing)
	{
		using(SolidBrush br = new SolidBrush(this.gridControl1.AlphaBlendSelectionColor))
		{
			e.Graphics.FillRectangle(br, e.Bounds);
		}
	}
}

[Stefan Tsalapatis]

Thanks Clay,

It works also from the DrawCell
if I have TransparentBackground and
OptimizeDrawBackground = true.

This is exactly the behavior I want.

But I have two minor problems

1.Because of TransparentBackground=true
the Grid.BackgroundColor is Empty
and if I set the BackColor then
from inside the TransparentBackground
becomes false. ( so it redraws the cells background after what I have drawed on DrawCell )
How to draw the Grid.BackgroundColor
manually ?
I tried Model.Properties.BackColor
but does nothing.

2.
I draw also the headers and I have not
problem except that when I press the row header then it redraws internally the row with the default AlphaBlend.
I have set behavior as RefreshRow
and ListBoxSelectionMode.None
What to do to avoid the internally
redrawing when I click on a row header ?

Thanks again
Stefan

>You can try using the CellDrawn event to over-paint the selection color. (You may only need the e.ColIndex == cc.ColIndex && e.RowIndex == cc.RowIndex checks.)
>
>

>private void gridControl1_CellDrawn(object sender, GridDrawCellEventArgs e)
>{
>	GridCurrentCell cc = this.gridControl1.CurrentCell;
>	if(e.ColIndex == cc.ColIndex && e.RowIndex == cc.RowIndex
>		&& this.gridControl1.Selections.Ranges.AnyRangeContains(GridRangeInfo.Cell(e.RowIndex, e.ColIndex))
>		&& !cc.IsEditing)
>	{
>		using(SolidBrush br = new SolidBrush(this.gridControl1.AlphaBlendSelectionColor))
>		{
>			e.Graphics.FillRectangle(br, e.Bounds);
>		}
>	}
>}
>

>

[Administrator]

>> so it redraws the cells background after what I have drawed on DrawCell

Are you drawing the selection before you call the baseclass? If so, try switching the order of drawing the selection color and the base class call.

2.
The problem may be that bu default, when you click a row header, the current cell is moved ot column 1, an dthis is where you color is being drawn. Try code like this to see if it handles this problem.

private int originalCol = -1;
private void gridDataBoundGrid1_CurrentCellMoving(object sender, GridCurrentCellMovingEventArgs e)
{
	originalCol = this.gridDataBoundGrid1.CurrentCell.MoveToColIndex;
}
private void gridDataBoundGrid1_CurrentCellActivating(object sender, GridCurrentCellActivatingEventArgs e)
{
	if(originalCol == 0)
			e.ColIndex = 0;
}