GGC and link label custom cell type

[Brian Corley]

I have taken the link label custom cell type example and modified it for my use. However, in nested tables the style (text color) of the link will not change for the mouse over and mouse out events even though the code is being executed. Any ideas?

[Brian Corley]

The code below is not called when the user mouses over any nested table link label cell. The top level table works as expected.

protected override void OnDraw(System.Drawing.Graphics g, System.Drawing.Rectangle clientRectangle, int rowIndex, int colIndex, Syncfusion.Windows.Forms.Grid.GridStyleInfo style)
{
style.Font.Underline = true;

if(_drawHotLink)
{
style.TextColor = ActiveLinkColor;
}
base.OnDraw(g, clientRectangle, rowIndex, colIndex, style);

}

[stanleyj]

Hi Brian,

We could see the issue, will get back to you with solution.

Thanks,
Stanley

[Administrator]

Hi Brian,
LinkLabel cell is not compatible with the NestedTables. Please change the CellRenderer''s DrawLink method as follows to fix the issue:

		private void DrawLink(bool useHotColor, int rowIndex, int colIndex)
		{
			if(useHotColor)
				_drawHotLink = true;

			this.Grid.InvalidateRange(GridRangeInfo.Cell(rowIndex, colIndex), GridRangeOptions.None);
			this.Grid.GetGridWindow().Update();
              		_drawHotLink = false;
		}

		
Also we noticed an issue with the current implementation. If you hover over the cell and ''ALT+TAB'' to switch to a new window and again back to the Grid, you could see all linklabel cells are highlighted. You can avoid it by setting the drawHotLink flag to false and refreshing the Grid.


		public LinkLabelCellRenderer(GridControlBase grid, GridCellModelBase cellModel)
			: base(grid, cellModel)
		{
			this.Grid.GotFocus += new EventHandler(Grid_GotFocus);
                          ..
                          ..
                }

		private void Grid_GotFocus(object sender, EventArgs e)
		{
			this._drawHotLink = false;
			this.Grid.Refresh();
		}


We will also update the shipping sample.

Best regards,
Jay
            

[Brian Corley]

works like a champ, thansk, for the help.