Non-Modal about dialog?

It it possible to have a non-modal QMessageBox::about dialog box? I want to have a hyperlink in the dialog box that the user can click to go to a website, which I implemented with this code:

Code:

---

HINSTANCE status =::ShellExecute( this->winId(), NULL,
 ( TCHAR * ) L"www.google.com", NULL, NULL, SW_SHOW );

---

But the url doesn't open until I click the OK button in the dialog box, which I'm assuming is because the dialog box is blocking the program?

Appreciate any advice you might have!

http://doc.qt.nokia.com/4.7/qdialog.html#modal-prop