Fred Morin said:

This is probably easy right ?

You can use UltraTooolTipManager and call the ShowToolTip method on it to show a tooltip. That part is pretty simple.

But this won't work in Form_Load because you can't show a child window inside that event.It seems to work okay in Form_Shown, though. So you might just need to use a flag so it only happens the first time - if that's what you want.

        private void Form1_Load(object sender, EventArgs e)
        {
            UltraToolTipInfo tooltipInfo = this.ultraToolTipManager1.GetUltraToolTip(this);
            tooltipInfo.ToolTipText = "Form is loaded.";            
        }

        private void Form1_Shown(object sender, EventArgs e)
        {
            this.ultraToolTipManager1.ShowToolTip(this, this.Location);
        }