Clicking HyperLinks in a RichTextBox without holding down CTRL - WPF

问题

I have a WPF RichTextBox with isReadOnly set to True. I would like users to be able to click on HyperLinks contained within the RichTextBox, without them having to hold down Ctrl.

The Click event on the HyperLink doesn't seem to fire unless Ctrl is held-down, so I'm unsure of how to proceed.

回答1:

I found a solution. Set IsDocumentEnabled to "True" and set IsReadOnly to "True".

<RichTextBox IsReadOnly="True" IsDocumentEnabled="True" />

Once I did this, the mouse would turn into a 'hand' when I hover over a text displayed within a HyperLink tag. Clicking without holding control will fire the 'Click' event.

I am using WPF from .NET 4. I do not know if earlier versions of .NET do not function as I describe above.

回答2:

JHubbard80's answer is a possible solution, it's the easiest way if you do not need the content to be selected.

However I need that :P here is my approach: set a style for the Hyperlinks inside the RichTextBox. The essential is to use a EventSetter to make the Hyperlinks handling the MouseLeftButtonDown event.

<RichTextBox>
    <RichTextBox.Resources>
        <Style TargetType="Hyperlink">
            <Setter Property="Cursor" Value="Hand" />
            <EventSetter Event="MouseLeftButtonDown" Handler="Hyperlink_MouseLeftButtonDown" />
        </Style>
    </RichTextBox.Resources>
</RichTextBox>

And in codebehind:

private void Hyperlink_MouseLeftButtonDown(object sender, MouseEventArgs e)
{
    var hyperlink = (Hyperlink)sender;
    Process.Start(hyperlink.NavigateUri.ToString());
}

Thanks to gcores for the inspiaration.

回答3:

Managed to find a way around this, pretty much by accident.

The content that's loaded into my RichTextBox is just stored (or inputted) as a plain string. I have subclassed the RichTextBox to allow binding against it's Document property.

What's relevant to the question, is that I have an IValueConverter Convert() overload that looks something like this (code non-essential to the solution has been stripped out):

FlowDocument doc = new FlowDocument();
Paragraph graph = new Paragraph();

Hyperlink textLink = new Hyperlink(new Run(textSplit));
textLink.NavigateUri = new Uri(textSplit);
textLink.RequestNavigate += 
  new System.Windows.Navigation.RequestNavigateEventHandler(navHandler);

graph.Inlines.Add(textLink);
graph.Inlines.Add(new Run(nonLinkStrings));

doc.Blocks.Add(graph);

return doc;

This gets me the behavior I want (shoving plain strings into RichTextBox and getting formatting) and it also results in links that behave like a normal link, rather than one that's embedded in a Word document.

回答4:

Have you tried handling the MouseLeftButtonDown event instead of the Click event?

回答5:

I changed EventSetter from @hillin's answer. MouseLeftButtonDown didn't work in my code (.Net framework 4.5.2).

<EventSetter Event="RequestNavigate" Handler="Hyperlink_RequestNavigate" />

private void Hyperlink_RequestNavigate(object sender, System.Windows.Navigation.RequestNavigateEventArgs e)
{
    Process.Start(e.Uri.ToString());
}

回答6:

If you want to turn Arrow into a Hand cursor always without default system navigation, below is the approach.

<RichTextBox>
            <RichTextBox.Resources>
                <Style TargetType="{x:Type Hyperlink}">                                
                    <EventSetter Event="MouseEnter" Handler="Hyperlink_OnMouseEnter"/>
                </Style>                
            </RichTextBox.Resources>
</RichTextBox>


private void Hyperlink_OnMouseEnter(object sender, MouseEventArgs e)
        {
            var hyperlink = (Hyperlink)sender;
            hyperlink.ForceCursor = true;
            hyperlink.Cursor = Cursors.Hand;
        }

来源：https://stackoverflow.com/questions/762271/clicking-hyperlinks-in-a-richtextbox-without-holding-down-ctrl-wpf

标签

wpf

richtextbox

click

hyperlink

ctrl