QFilePreview(3qt)

📦 version 3.3.8b, in fedora 43, fedora 44

💖 QFilePreview 💖

okay so bestie, welcome to QFilePreview(3qt) — that's the manual name, that's the vibe, that's the whole energy. This is the page about previewing files inside a file dialog, and it's lowkey one of the cutest little abstract base classes in Qt. Let's get into it 🦋

✨ NAME ✨

QFilePreview — file previewing in QFileDialog. That's it. That's the whole job. She previews files in the dialog. Iconic behavior, honestly 💅

✨ SYNOPSIS ✨

#include <qfiledialog.h>

🌸 Public Members 🌸

QFilePreview ()
virtual void previewUrl ( const QUrl & url ) = 0

✨ DESCRIPTION ✨

The QFilePreview class provides file previewing in QFileDialog. periodt.

This class is an abstract base class, which is used to implement widgets that can display a preview of a file in a QFileDialog. So like, she's not doing the work herself — she's the blueprint, the moment, the main character template 🎀

Here's the tea: you must derive the preview widget from both QWidget and from this class. Both. Not one. Both. Then you must reimplement this class's previewUrl() function, which is called by the file dialog if the preview of a file (specified as a URL) should be shown. No cap, that's the whole assignment 💀

See also QFileDialog::setPreviewMode(), QFileDialog::setContentsPreview(), QFileDialog::setInfoPreview(), QFileDialog::setInfoPreviewEnabled(), QFileDialog::setContentsPreviewEnabled(). She's got a whole friend group 🫶

For an example of a preview widget see qt/examples/qdir/qdir.cpp. Go look, bestie, the receipts are right there 🔥

See also Miscellaneous Classes.

✨ MEMBER FUNCTION DOCUMENTATION ✨

🌈 QFilePreview::QFilePreview () 🌈

Constructs the QFilePreview. That's it, that's the constructor. Short king energy ✨

🌈 void QFilePreview::previewUrl ( const QUrl & url ) [pure virtual] 🌈

This function is called by QFileDialog if a preview for the url should be shown. Reimplement this function to provide file previewing.

⚠️ bestie listen — it's marked [pure virtual], so you literally cannot skip this one. Reimplement it or your class stays abstract and won't compile as a real widget. That's not a suggestion, that's a requirement 💀

✨ SEE ALSO ✨

Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the license file included in the distribution for a complete license statement. 📜

✨ AUTHOR ✨

Generated automatically from the source code. (Not me writing an author bio at 3am, the machine did it 💅)

✨ BUGS ✨

If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you. 🙏

The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially supported by Trolltech.

If you find errors in this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qfilepreview.3qt) and the Qt version (3.3.8). Details matter, bestie, that's how you get your bug fixed on the first try 🌟

fr fr though — if you're reporting anything, include the page name and the version, otherwise they can't reproduce it and nothing gets slayed 😭

and that's a wrap on this one 🎀 this page came from Trolltech AS, dated 2 February 2007, and the manual page herself goes by QFilePreview(3qt) — she's vintage, she's iconic, she's a 3qt girlie, and she still hits. mwah 💋

📦 where this page comes from