FileDialog QML Type | Qt Quick Dialogs 6.4.1

- Qt 6.4
- Qt Quick Dialogs
- QML Types
- FileDialog
- Qt 6.4.1 Reference Documentation

# FileDialog QML Type

A file dialog. More...

Import Statement: | import QtQuick.Dialogs
Since: | Qt 6.2
Inherits: | Dialog

- List of all members, including inherited members
- Deprecated members

## Properties

- acceptLabel : string
- currentFolder : url
- defaultSuffix : string
- fileMode : enumeration
- nameFilters : list<string>
- options : flags
- rejectLabel : string
- selectedFile : url
- selectedFiles : list<url>
- selectedNameFilter
  - selectedNameFilter.extensions : list<string>
  - selectedNameFilter.globs : list<string>
  - selectedNameFilter.index : int
  - selectedNameFilter.name : string

## Detailed Description

The FileDialog type provides a QML API for file dialogs.

To show a file dialog, construct an instance of FileDialog, set the desired properties, and call open(). The currentFile or currentFiles properties can be used to determine the currently selected file(s) in the dialog. The selectedFile and selectedFiles properties are updated only after the final selection has been made by accepting the dialog.

     import QtCore
     import QtQuick
     import QtQuick.Controls
     import QtQuick.Dialogs

     ApplicationWindow {
         width: 640
         height: 480
         visible: true

         header: ToolBar {
             Button {
                 text: qsTr("Choose Image...")
                 onClicked: fileDialog.open()
             }
         }

         Image {
             id: image
             anchors.fill: parent
             fillMode: Image.PreserveAspectFit
         }

         FileDialog {
             id: fileDialog
             currentFolder: StandardPaths.standardLocations(StandardPaths.PicturesLocation)[0]
             onAccepted: image.source = selectedFile
         }
     }

### Availability

A native platform file dialog is currently available on the following platforms:

- iOS
- Android
- Linux (when running with the GTK+ platform theme)
- macOS
- Windows

Qt Quick Dialogs uses a Qt Quick implementation as a fallback on platforms that do not have a native implementation available.

See also FolderDialog and StandardPaths.

## Property Documentation

acceptLabel : string

This property holds the label text shown on the button that accepts the dialog.

When set to an empty string, the default label of the underlying platform is used. The default label is typically Open or Save depending on which fileMode the dialog is used in.

The default value is an empty string.

See also rejectLabel.

currentFolder : url

This property holds the folder where files are selected. It can be set to control the initial directory that is shown when the dialog is opened.

For selecting a folder, use FolderDialog instead.

defaultSuffix : string

This property holds a suffix that is added to selected files that have no suffix specified. The suffix is typically used to indicate the file type (e.g. "txt" indicates a text file).

If the first character is a dot ('.'), it is removed.

fileMode : enumeration

This property holds the mode of the dialog.

Available values:

Constant | Description
--- | ---
`FileDialog.OpenFile` | The dialog is used to select an existing file (default).
`FileDialog.OpenFiles` | The dialog is used to select multiple existing files.
`FileDialog.SaveFile` | The dialog is used to select any file. The file does not have to exist.

nameFilters : list<string>

This property holds the filters that restrict the types of files that can be selected.

     FileDialog {
         nameFilters: ["Text files (*.txt)", "HTML files (*.html *.htm)"]
     }

Different platforms may restrict the files that can be selected in different ways. For example, macOS will disable file entries that do not match the filters, whereas Windows will hide them.

Note: *.* is not a portable filter, because the historical assumption that the file extension determines the file type is not consistent on every operating system. It is possible to have a file with no dot in its name (for example, `Makefile`). In a native Windows file dialog, *.* will match such files, while in other types of file dialogs it may not. So it is better to use * if you mean to select any file.

See also selectedNameFilter.

options : flags

This property holds the various options that affect the look and feel of the dialog.

By default, all options are disabled.

Options should be set before showing the dialog. Setting them while the dialog is visible is not guaranteed to have an immediate effect on the dialog (depending on the option and on the platform).

Available options:

Constant | Description
--- | ---
`FileDialog.DontResolveSymlinks` | Don't resolve symlinks in the file dialog. By default symlinks are resolved.
`FileDialog.DontConfirmOverwrite` | Don't ask for confirmation if an existing file is selected. By default confirmation is requested.
`FileDialog.ReadOnly` | Indicates that the dialog doesn't allow creating directories.
`FileDialog.HideNameFilterDetails` | Indicates if the file name filter details are hidden or not.
`FileDialog.DontUseNativeDialog` | Forces the dialog to use a non-native quick implementation.

rejectLabel : string

This property holds the label text shown on the button that rejects the dialog.

When set to an empty string, the default label of the underlying platform is used. The default label is typically Cancel.

The default value is an empty string.

See also acceptLabel.

selectedFile : url

This property holds the last file that was selected in the dialog.

It can be set to control the file that is selected when the dialog is opened.

If there are multiple selected files, this property refers to the first file.

The value of this property is updated each time the user selects a file in the dialog, and when the dialog is accepted. Handle the accepted() signal to get the final selection.

See also selectedFiles, accepted(), and currentFolder.

selectedFiles : list<url>

This property holds the last files that were selected in the dialog.

The value of this property is updated each time the user selects files in the dialog, and when the dialog is accepted. Handle the accepted() signal to get the final selection.

See also accepted() and currentFolder.

selectedNameFilter group
selectedNameFilter.extensions : list<string>
selectedNameFilter.globs : list<string>
selectedNameFilter.index : int
selectedNameFilter.name : string

These properties hold the currently selected name filter.

Name | Description
--- | ---
index : int | This property determines which name filter is selected. The specified filter is selected when the dialog is opened. The value is updated when the user selects another filter.
[read-only] name : string | This property holds the name of the selected filter. In the example below, the name of the first filter is `"Text files"` and the second is `"HTML files"`.
[read-only] extensions : list<string> | This property holds the list of extensions of the selected filter. In the example below, the list of extensions of the first filter is `["txt"]` and the second is `["html", "htm"]`.
[read-only] globs : list<string> | This property holds the list of globs of the selected filter. In the example below, the list of globs of the first filter is `["*.txt"]` and the second is `["*.html", "*.htm"]`. This property is useful in conjunction with FolderListModel's nameFilters property, for example.

     FileDialog {
         id: fileDialog
         selectedNameFilter.index: 1
         nameFilters: ["Text files (*.txt)", "HTML files (*.html *.htm)"]
     }

     MyDocument {
         id: document
         fileType: fileDialog.selectedNameFilter.extensions[0]
     }

See also nameFilters.