WinForms TreeList - Customize cell tooltips (hints)

This example shows how to handle the ToolTipController.GetActiveObjectInfo event to customize the tooltips displayed for TreeList cells:

private void toolTipController1_GetActiveObjectInfo(object sender, DevExpress.Utils.ToolTipControllerGetActiveObjectInfoEventArgs e) {
    if(e.SelectedControl is DevExpress.XtraTreeList.TreeList) {
        TreeList tree = (TreeList)e.SelectedControl;
        TreeListHitInfo hit = tree.CalcHitInfo(e.ControlMousePosition);
        if(hit.HitInfoType == HitInfoType.Cell) {
            object cellInfo = new TreeListCellToolTipInfo(hit.Node, hit.Column, null);
            string toolTip = string.Format("{0} (Column: {1}, Node ID: {2})", hit.Node[hit.Column], hit.Column.FieldName, hit.Node.Id);
            e.Info =  new DevExpress.Utils.ToolTipControlInfo(cellInfo, toolTip);                    
        }
    }
}

Files to Review

• Form1.cs (VB: Form1.vb)

Documentation

• Hints and Tooltips

See Also

• WinForms Data Grid - How to display tooltips for grid cells if cell content is completely visible
• How to get multi-line tooltips with a specific width
• How to programmatically display a tooltip for a control via the ToolTipController component
• How to display a hint for an active editor within the XtraGrid
• How to display hints only for particular cells

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