Checkbox CheckedState Changed Event

[maik]

Hello Everyone,

I am currently Testing if we can switch from Word to Telerik RadRichTextbox. For that i want to be able to get notifications/events when a User Clicks on a Checkbox. I know there is the DocumentContentChanged event but that fires always and i dont think that ist viable for a document with many Checkboxes.

Is there some Event that would tell me which Control was changed?

[Dimitar]

Hi Maik, 

The selected product for this thread is WinUI but this suite does not have a RadRichTextBox. Can you specify the exact product you want to use in this case? Perhaps WPF or Winforms? 

I am looking forward to your reply.

[Charlotte]

In Telerik RadRichTextBox, there is an event called FieldClicked that you can use to get notifications when a user clicks on a checkbox or any other field within the document. This event specifically provides information about the clicked field.

[maik]

Thank you for your response. I apologize for the confusion;

I mistakenly posted in the WinUI forum when I should have posted in the WPF forum.

I am unable to locate the FieldClicked event in the RadRichTextBox or in any of your documentation. Could you please share a simple demo app or provide more information about the FieldClicked event?

Thank you very much!

[Dimitar]

Hello Maik,

You can use the following approach to get the clicked checkbox: 

private void RadRichTextBox_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
    var parentPanel = (RadRichTextBox)sender;

    Point pt = e.GetPosition(parentPanel);

    VisualTreeHelper.HitTest(parentPanel, null,
        new HitTestResultCallback(MyHitTestResult),
        new PointHitTestParameters(pt));
}

public HitTestResultBehavior MyHitTestResult(HitTestResult result)
{
    if (result.VisualHit != null)
    {
        var contentControl = result.VisualHit.GetParents().OfType<CheckBoxControl>().FirstOrDefault();

        if (contentControl != null)
        {
            MessageBox.Show("Check Box Clicked");
        }
    }

    return HitTestResultBehavior.Continue;
}

I hope this helps. Should you have any other questions do not hesitate to ask.

Regards,
Dimitar
Progress Telerik

[maik]

Thanks for the answer!

I just tested it again after a long time and forgot to mention that I have several ContentControls in my document and I want to be able to identify the exact clicked ContentControl. Is there a way to do this?

[Dimitar]

Hi Maik,

You can use the Tag property for this (see attached). 

Let me know if you have additional questions.

[maik]

Hey Dimitar,

thanks for the reply,

im directly referencing the code above where i have the Method MyHitTestResult.

when I Click on the Checkbox and Debug to the Point:

var contentControl = result.VisualHit.GetParents().OfType<CheckBoxControl>().FirstOrDefault();

I will find the FirstorDefault control from Type Telerik.Windows.Controls.RichTextBoxUI.CheckBoxControl

 but the Property is always Empty.

I already added a Tag and a Title to every Checkbox in my Document like you showed in the Attachment

thanks in advance

 

 

[Dimitar]

Hi Maik, 

The Tag property of the control is different. You can get the Tag from the SdtProperties. Here is an example:

var contentControl = result.VisualHit.GetParents().OfType<CheckBoxControl>().FirstOrDefault();

if (contentControl != null)
{
    var range = radRichTextBox.Document.CaretPosition.GetCurrentInline() as SdtRangeEnd;
    if (range != null)
    {
        var tag = ((SdtRangeStart)range.Start).SdtProperties.Tag;
    }
}

Let me know if I can be of further assistance.