ScreenTip Delay

[Adam Beal]

I am using the ScreenTip feature to show some extra info in my RadGridView row when mousing over. That is working great but the delay is a bit much before it pops up when you mouse over it. I noticed here that the regular ToolTip has lots of properties that can be set to adjust this:
http://www.telerik.com/community/forums/winforms/gridview/tooltip-visible-time.aspx 

I am wondering if you can include some code with samples here on how to do the same thing with the ScreenTip. Changing the code from that sample around didn't seem to work.

Thanks in advance!

[Nikolay]

Hi Adam,

Thank you for the question.

In order to change the delay, you need to change the value of the showDelay field. You should do this on the ScreenTipNeeded event. Please refer to the code snippet below for additional information:

RadOffice2007ScreenTipElement screenTip = new RadOffice2007ScreenTipElement();

private void radGridView1_ScreenTipNeeded(object sender, Telerik.WinControls.ScreenTipNeededEventArgs e)
{
    GridDataCellElement cell = e.Item as GridDataCellElement;

    if (cell != null)
    {
        ComponentBehavior behavior = (cell.ElementTree.ComponentTreeHandler as IComponentTreeHandler).Behavior;
        PropertyInfo screenPresenterProperty = typeof(ComponentBehavior).GetProperty("ScreenPresenter", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.GetProperty);
        object screenTipPresenter = screenPresenterProperty.GetValue(behavior, null);
        Type radScreenTipType = screenTipPresenter.GetType();

        FieldInfo delayField = radScreenTipType.GetField("showDelay", BindingFlags.NonPublic | BindingFlags.Instance);

        int newDelayFieldValue = 1;

        delayField.SetValue(screenTipPresenter, newDelayFieldValue);

        cell.ScreenTip = screenTip;
        screenTip.MainTextLabel.Text = "SampleText";
    }
}

I hope you find this answer helpful. If you have further questions, feel free to contact me.

Kind regards,
Nikolay
the Telerik team

[stefano]

Hi,
since the post is very old (2010) I'd like to know if it is now possible to set the "delay" property directly using the new version 2013.2.612.40

Thank you for considering my request

[Nikolay]

Hi Stefano,

In the latest versions we have exposed the Delay property at the ScreenTipNeededEventArgs and you can set it as shown below:

void radGridView1_ScreenTipNeeded(object sender, Telerik.WinControls.ScreenTipNeededEventArgs e)
{
    e.Delay = 1;
}

I hope this helps.

Regards,
Nikolay
Telerik

[stefano]

Hi Nikolay,

that's solve thanks!