Is it possible to use icons indicators in columnes in gantt chart control?
Yes, you can customize the column HTML using BeforeTaskRender event handler: http://doc.daypilot.org/gantt/task-customization/
void DayPilotGantt1_BeforeTaskRender(object sender, BeforeTaskRenderEventArgs e) { e.Row.Columns[0].Html = "<img src='image.png'/>"; }