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main.cpp
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main.qml
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org.kde.qml5-portaldialog.json
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qmlfile.qrc
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README.md

QML5 FileChooser XDG Portal - Using a file picker

This is a minimal example to learn how to use the FileChooser portal to use the native Linux file picker using QtQuick's FileDialog.

This project DOES NOT use the new CMake API.

Important reminders:

  • If the app isn't sandboxed, Qt6's FileDialog WILL be able to use the native file picker just yet, unlike Qt6's, which CANNOT.
  • If the app is sandboxed (e.g. flatpak or snap), Qt6's FileDialog calls the relevant implementation of xdg-desktop-portal to use the native file picker.
  • At the time of writing (23/10/2022), xdg-desktop-portal-kde still uses a QtWidgets implementation, therefore using the FileChooser portal requires that you use QtWidget's QApplication instead of QtQuick's QGuiApplication.

In summary, in order to use the FileChooser portal via Qt5's FileDialog:

  • Use FileDialog
  • Use it as normal or packaged as flatpak or similar
  • Use QApplication

To package this as a flatpak:

flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
flatpak-builder build --user --install-deps-from=flathub --force-clean --ccache --install org.kde.qml5-portaldialog.json
flatpak run org.kde.qml5-portaldialog.json