- Qt 6.9
- Qt Quick Controls
- QML Types
- Dialog
- Qt 6.9.0 Reference Documentation

# Dialog QML Type

Popup dialog with standard buttons and a title, used for short-term interaction with the user. More...

Import Statement: | `import QtQuick.Controls`
Inherits: | Popup

- List of all members, including inherited members

## Properties

- footer : Item
- header : Item
- implicitFooterHeight : real `(since QtQuick.Controls 2.5 (Qt 5.12))`
- implicitFooterWidth : real `(since QtQuick.Controls 2.5 (Qt 5.12))`
- implicitHeaderHeight : real `(since QtQuick.Controls 2.5 (Qt 5.12))`
- implicitHeaderWidth : real `(since QtQuick.Controls 2.5 (Qt 5.12))`
- result : int `(since QtQuick.Controls 2.3 (Qt 5.10))`
- standardButtons : enumeration
- title : string

## Signals

- accepted()
- applied() `(since QtQuick.Controls 2.3 (Qt 5.10))`
- discarded() `(since QtQuick.Controls 2.3 (Qt 5.10))`
- helpRequested() `(since QtQuick.Controls 2.3 (Qt 5.10))`
- rejected()
- reset() `(since QtQuick.Controls 2.3 (Qt 5.10))`

## Methods

- void accept()
- void done(int result) `(since QtQuick.Controls 2.3 (Qt 5.10))`
- void reject()
- AbstractButton standardButton(StandardButton button) `(since QtQuick.Controls 2.3 (Qt 5.10))`

## Detailed Description

A dialog is a popup mostly used for short-term tasks and brief communications with the user. Similarly to ApplicationWindow and Page, Dialog is organized into three sections: header, contentItem, and footer.

The padding properties only affect the contentItem. Use the spacing property to affect the space between header, contentItem and footer.

By default, Dialogs have focus.

## Dialog Title and Buttons

Dialog's title is displayed by a style-specific title bar that is assigned as a dialog header by default.

Dialog's standard buttons are managed by a DialogButtonBox that is assigned as a dialog footer by default. The dialog's standardButtons property is forwarded to the respective property of the button box. Furthermore, the accepted() and rejected() signals of the button box are connected to the respective signals in Dialog.

     Dialog {
         id: dialog
         title: "Title"
         standardButtons: Dialog.Ok | Dialog.Cancel

         onAccepted: console.log("Ok clicked")
         onRejected: console.log("Cancel clicked")
     }

## Modal Dialogs

A modal dialog blocks input to other content beneath the dialog. When a modal dialog is opened, the user must finish interacting with the dialog and close it before they can access any other content in the same window.

     Dialog {
         id: dialog
         modal: true
         standardButtons: Dialog.Ok
     }

## Modeless Dialogs

A modeless dialog is a dialog that operates independently of other content around the dialog. When a modeless dialog is opened, the user is allowed to interact with both the dialog and the other content in the same window.

     Dialog {
         id: dialog
         modal: false
         standardButtons: Dialog.Ok
     }

See also DialogButtonBox and Popup Controls.

## Property Documentation

footer : Item

This property holds the dialog footer item. The footer item is positioned to the bottom, and resized to the width of the dialog. The default value is `null`.

Note: Assigning a DialogButtonBox as a dialog footer automatically connects its accepted() and rejected() signals to the respective signals in Dialog.

Note: Assigning a DialogButtonBox, ToolBar, or TabBar as a dialog footer automatically sets the respective DialogButtonBox::position, ToolBar::position, or TabBar::position property to `Footer`.

See also header.

header : Item

This property holds the dialog header item. The header item is positioned to the top, and resized to the width of the dialog. The default value is `null`.

Note: Assigning a DialogButtonBox as a dialog header automatically connects its accepted() and rejected() signals to the respective signals in Dialog.

Note: Assigning a DialogButtonBox, ToolBar, or TabBar as a dialog header automatically sets the respective DialogButtonBox::position, ToolBar::position, or TabBar::position property to `Header`.

See also footer.

implicitFooterHeight : real `[read-only, since QtQuick.Controls 2.5 (Qt 5.12)]`

This property holds the implicit footer height.

The value is equal to `footer && footer.visible ? footer.implicitHeight : 0`.

This property was introduced in QtQuick.Controls 2.5 (Qt 5.12).

See also implicitFooterWidth and implicitHeaderHeight.

implicitFooterWidth : real `[read-only, since QtQuick.Controls 2.5 (Qt 5.12)]`

This property holds the implicit footer width.

The value is equal to `footer && footer.visible ? footer.implicitWidth : 0`.

This property was introduced in QtQuick.Controls 2.5 (Qt 5.12).

See also implicitFooterHeight and implicitHeaderWidth.

implicitHeaderHeight : real `[read-only, since QtQuick.Controls 2.5 (Qt 5.12)]`

This property holds the implicit header height.

The value is equal to `header && header.visible ? header.implicitHeight : 0`.

This property was introduced in QtQuick.Controls 2.5 (Qt 5.12).

See also implicitHeaderWidth and implicitFooterHeight.

implicitHeaderWidth : real `[read-only, since QtQuick.Controls 2.5 (Qt 5.12)]`

This property holds the implicit header width.

The value is equal to `header && header.visible ? header.implicitWidth : 0`.

This property was introduced in QtQuick.Controls 2.5 (Qt 5.12).

See also implicitHeaderHeight and implicitFooterWidth.

result : int `[since QtQuick.Controls 2.3 (Qt 5.10)]`

This property holds the result code.

Standard result codes:

Constant | Description
--- | ---
`Dialog.Accepted` | The dialog was accepted.
`Dialog.Rejected` | The dialog was rejected.

This property was introduced in QtQuick.Controls 2.3 (Qt 5.10).

See also accept(), reject(), and done().

standardButtons : enumeration

This property holds a combination of standard buttons that are used by the dialog.

     Dialog {
         id: dialog
         title: "Title"
         standardButtons: Dialog.Ok | Dialog.Cancel

         onAccepted: console.log("Ok clicked")
         onRejected: console.log("Cancel clicked")
     }

The buttons will be positioned in the appropriate order for the user's platform.

Possible flags:

Constant | Description
--- | ---
`Dialog.Ok` | An "OK" button defined with the `AcceptRole`.
`Dialog.Open` | An "Open" button defined with the `AcceptRole`.
`Dialog.Save` | A "Save" button defined with the `AcceptRole`.
`Dialog.Cancel` | A "Cancel" button defined with the `RejectRole`.
`Dialog.Close` | A "Close" button defined with the `RejectRole`.
`Dialog.Discard` | A "Discard" or "Don't Save" button, depending on the platform, defined with the `DestructiveRole`.
`Dialog.Apply` | An "Apply" button defined with the `ApplyRole`.
`Dialog.Reset` | A "Reset" button defined with the `ResetRole`.
`Dialog.RestoreDefaults` | A "Restore Defaults" button defined with the `ResetRole`.
`Dialog.Help` | A "Help" button defined with the `HelpRole`.
`Dialog.SaveAll` | A "Save All" button defined with the `AcceptRole`.
`Dialog.Yes` | A "Yes" button defined with the `YesRole`.
`Dialog.YesToAll` | A "Yes to All" button defined with the `YesRole`.
`Dialog.No` | A "No" button defined with the `NoRole`.
`Dialog.NoToAll` | A "No to All" button defined with the `NoRole`.
`Dialog.Abort` | An "Abort" button defined with the `RejectRole`.
`Dialog.Retry` | A "Retry" button defined with the `AcceptRole`.
`Dialog.Ignore` | An "Ignore" button defined with the `AcceptRole`.
`Dialog.NoButton` | An invalid button.

See also DialogButtonBox.

title : string

This property holds the dialog title.

The title is displayed in the dialog header.

     Dialog {
         title: qsTr("About")

         Label {
             text: "Lorem ipsum..."
         }
     }

## Signal Documentation

accepted()

This signal is emitted when the dialog has been accepted either interactively or by calling accept().

Note: This signal is not emitted when closing the dialog with close() or setting visible to `false`.

Note: The corresponding handler is `onAccepted`.

See also rejected().

`[since QtQuick.Controls 2.3 (Qt 5.10)]` applied()

This signal is emitted when the `Dialog.Apply` standard button is clicked.

Note: The corresponding handler is `onApplied`.

This signal was introduced in QtQuick.Controls 2.3 (Qt 5.10).

See also discarded() and reset().

`[since QtQuick.Controls 2.3 (Qt 5.10)]` discarded()

This signal is emitted when the `Dialog.Discard` standard button is clicked.

Note: The corresponding handler is `onDiscarded`.

This signal was introduced in QtQuick.Controls 2.3 (Qt 5.10).

See also reset() and applied().

`[since QtQuick.Controls 2.3 (Qt 5.10)]` helpRequested()

This signal is emitted when the `Dialog.Help` standard button is clicked.

Note: The corresponding handler is `onHelpRequested`.

This signal was introduced in QtQuick.Controls 2.3 (Qt 5.10).

See also accepted() and rejected().

rejected()

This signal is emitted when the dialog has been rejected either interactively or by calling reject().

Note: This signal is not emitted when closing the dialog with close() or setting visible to `false`.

Note: The corresponding handler is `onRejected`.

See also accepted().

`[since QtQuick.Controls 2.3 (Qt 5.10)]` reset()

This signal is emitted when the `Dialog.Reset` standard button is clicked.

Note: The corresponding handler is `onReset`.

This signal was introduced in QtQuick.Controls 2.3 (Qt 5.10).

See also discarded() and applied().

## Method Documentation

void accept()

Emits the accepted() signal and closes the dialog.

See also reject() and done().

`[since QtQuick.Controls 2.3 (Qt 5.10)]` void done(int result)

1. Sets the result.
2. Emits accepted() or rejected() depending on whether the result is `Dialog.Accepted` or `Dialog.Rejected`, respectively.
3. Emits closed().

This method was introduced in QtQuick.Controls 2.3 (Qt 5.10).

See also accept(), reject(), and result.

void reject()

Emits the rejected() signal and closes the dialog.

See also accept() and done().

`[since QtQuick.Controls 2.3 (Qt 5.10)]` AbstractButton standardButton(StandardButton button)

Returns the specified standard button, or `null` if it does not exist.

This method was introduced in QtQuick.Controls 2.3 (Qt 5.10).

See also standardButtons.