Insert clickable link in QLabel and detect click on this link to provoke an action

问题

I would like to handle a click to the link in this application of mine:

When I click on the "Output File" link, I would like to be able to generate an action in my application.

As of today, the link is described like this in the rich text QLabel:

<a href="http://google.fr"><span style=" text-decoration: underline; color:#0000ff;">Output File&quot;</span></a>

(generated by Qt Designer)

When clicked, it will open the default web browser to go to Google. That's not what I want; I'd like something like:

<a href="#browse_output"><span style=" text-decoration: underline; color:#0000ff;">Output File&quot;</span></a>

And be able to detect the link that's clicked and react accordingly:

(pseudo code)

if( link_clicked.toString() == "#browse_output" ){
    on_browse_output_clicked();
}

Is this possible in Qt with a QLabel (or something approaching) ? How?

回答1:

Ok, for those interested, I got the answer:

Disable the "openExternalLinks" property of the QLabel
Connect the signal linkActivated of the QLabel to your handler.

That's all: linkActivated gives you the URL that the link refers to in argument, so my pseudo code works perfectly.

// header
private slots:
  void on_description_linkActivated(const QString &link);

// cpp
void KernelBuild::on_description_linkActivated(const QString &link)
{
  if( link == "#browse_output" ){
    on_outfilebtn_clicked();
  }
}

来源：https://stackoverflow.com/questions/16581425/insert-clickable-link-in-qlabel-and-detect-click-on-this-link-to-provoke-an-acti

标签

c++

hyperlink

qlabel