- Qt 6.6
- Qt Widgets
- C++ Classes
- QMessageBox
- Qt 6.6.0 Reference Documentation

# Obsolete Members for QMessageBox

The following members of class QMessageBox are deprecated. They are provided to keep old source code working. We strongly advise against using them in new code.

## Public Types

`(deprecated)` | Button

## Public Functions

`(deprecated)` | QMessageBox(const QString &title, const QString &text, QMessageBox::Icon icon, int button0, int button1, int button2, QWidget *parent = nullptr, Qt::WindowFlags f = Qt::Dialog | Qt::MSWindowsFixedSizeDialogHint)
`(deprecated)` QString | buttonText(int button) const
`(deprecated)` void | setButtonText(int button, const QString &text)

## Static Public Members

`(deprecated (6.2))` int | critical(QWidget *parent, const QString &title, const QString &text, int button0, int button1, int button2 = 0)
`(deprecated (6.2))` int | critical(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)
`(deprecated (6.2))` int | information(QWidget *parent, const QString &title, const QString &text, int button0, int button1 = 0, int button2 = 0)
`(deprecated)` int | information(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)
`(deprecated (6.2))` int | question(QWidget *parent, const QString &title, const QString &text, int button0, int button1 = 0, int button2 = 0)
`(deprecated (6.2))` int | question(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)
`(deprecated)` QPixmap | standardIcon(QMessageBox::Icon icon)
`(deprecated (6.2))` int | warning(QWidget *parent, const QString &title, const QString &text, int button0, int button1, int button2 = 0)
`(deprecated (6.2))` int | warning(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)

## Member Type Documentation

### QMessageBox::Button

This typedef is deprecated. We strongly advise against using it in new code.

Use QMessageBox::StandardButton instead.

## Member Function Documentation

### QMessageBox::QMessageBox(const QString &title, const QString &text, QMessageBox::Icon icon, int button0, int button1, int button2, QWidget *parent = nullptr, Qt::WindowFlags f = Qt::Dialog | Qt::MSWindowsFixedSizeDialogHint)

This function is deprecated. We strongly advise against using it in new code.

Constructs a message box with a title, a text, an icon, and up to three buttons.

The icon must be one of the following:

- QMessageBox::NoIcon
- QMessageBox::Question
- QMessageBox::Information
- QMessageBox::Warning
- QMessageBox::Critical

Each button, button0, button1 and button2, can have one of the following values:

- QMessageBox::NoButton
- QMessageBox::Ok
- QMessageBox::Cancel
- QMessageBox::Yes
- QMessageBox::No
- QMessageBox::Abort
- QMessageBox::Retry
- QMessageBox::Ignore
- QMessageBox::YesAll
- QMessageBox::NoAll

Use QMessageBox::NoButton for the later parameters to have fewer than three buttons in your message box. If you don't specify any buttons at all, QMessageBox will provide an Ok button.

One of the buttons can be OR-ed with the QMessageBox::Default flag to make it the default button (clicked when Enter is pressed).

One of the buttons can be OR-ed with the QMessageBox::Escape flag to make it the cancel or close button (clicked when Esc is pressed).

             QMessageBox mb("Application Name",
                            "Hardware failure.\n\nDisk error detected\nDo you want to stop?",
                            QMessageBox::Question,
                            QMessageBox::Yes | QMessageBox::Default,
                            QMessageBox::No | QMessageBox::Escape,
                            QMessageBox::NoButton);
             if (mb.exec() == QMessageBox::No) {
                 // try again

The message box is an application modal dialog box.

The parent and f arguments are passed to the QDialog constructor.

See also setWindowTitle(), setText(), and setIcon().

### QString QMessageBox::buttonText(int button) const

This function is deprecated. We strongly advise against using it in new code.

Returns the text of the message box button button, or an empty string if the message box does not contain the button.

Use button() and QPushButton::text() instead.

See also setButtonText().

### `[static]` int QMessageBox::critical(QWidget *parent, const QString &title, const QString &text, int button0, int button1, int button2 = 0)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use the overload taking StandardButtons instead.

Opens a critical message box with the given title and text. The dialog may have up to three buttons. Each of the button parameters, button0, button1 and button2 may be set to one of the following values:

- QMessageBox::NoButton
- QMessageBox::Ok
- QMessageBox::Cancel
- QMessageBox::Yes
- QMessageBox::No
- QMessageBox::Abort
- QMessageBox::Retry
- QMessageBox::Ignore
- QMessageBox::YesAll
- QMessageBox::NoAll

If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.

One button can be OR-ed with QMessageBox::Default, and one button can be OR-ed with QMessageBox::Escape.

Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.) of the button that was clicked.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also information(), question(), and warning().

### `[static]` int QMessageBox::critical(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use the overload taking StandardButtons instead.

This is an overloaded function.

Displays a critical error message box with the given title and text, as well as one, two, or three buttons. Returns the number of the button that was clicked (0, 1 or 2).

button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional, and button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the Escape button; pressing Escape is the same as clicking this button. It defaults to -1; supply 0, 1, or 2 to make pressing Escape equivalent to clicking the relevant button.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also information(), question(), and warning().

### `[static]` int QMessageBox::information(QWidget *parent, const QString &title, const QString &text, int button0, int button1 = 0, int button2 = 0)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use the overload taking StandardButtons instead.

Opens an information message box with the given title and the text. The dialog may have up to three buttons. Each of the buttons, button0, button1 and button2 may be set to one of the following values:

- QMessageBox::NoButton
- QMessageBox::Ok
- QMessageBox::Cancel
- QMessageBox::Yes
- QMessageBox::No
- QMessageBox::Abort
- QMessageBox::Retry
- QMessageBox::Ignore
- QMessageBox::YesAll
- QMessageBox::NoAll

If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.

One button can be OR-ed with QMessageBox::Default, and one button can be OR-ed with QMessageBox::Escape.

Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.) of the button that was clicked.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also question(), warning(), and critical().

### `[static]` int QMessageBox::information(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)

This function is deprecated. We strongly advise against using it in new code.

since 6.2. Use the overload taking StandardButtons instead.

This is an overloaded function.

Displays an information message box with the given title and text, as well as one, two or three buttons. Returns the index of the button that was clicked (0, 1 or 2).

button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional. button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the escape button; pressing Esc is the same as clicking this button. It defaults to -1; supply 0, 1 or 2 to make pressing Esc equivalent to clicking the relevant button.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also question(), warning(), and critical().

### `[static]` int QMessageBox::question(QWidget *parent, const QString &title, const QString &text, int button0, int button1 = 0, int button2 = 0)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use the overload taking StandardButtons instead.

Opens a question message box with the given title and text. The dialog may have up to three buttons. Each of the buttons, button0, button1 and button2 may be set to one of the following values:

- QMessageBox::NoButton
- QMessageBox::Ok
- QMessageBox::Cancel
- QMessageBox::Yes
- QMessageBox::No
- QMessageBox::Abort
- QMessageBox::Retry
- QMessageBox::Ignore
- QMessageBox::YesAll
- QMessageBox::NoAll

If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.

One button can be OR-ed with QMessageBox::Default, and one button can be OR-ed with QMessageBox::Escape.

Returns the identity (QMessageBox::Yes, or QMessageBox::No, etc.) of the button that was clicked.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also information(), warning(), and critical().

### `[static]` int QMessageBox::question(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use the overload taking StandardButtons instead.

This is an overloaded function.

Displays a question message box with the given title and text, as well as one, two or three buttons. Returns the index of the button that was clicked (0, 1 or 2).

button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional. button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the Escape button; pressing Escape is the same as clicking this button. It defaults to -1; supply 0, 1 or 2 to make pressing Escape equivalent to clicking the relevant button.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also information(), warning(), and critical().

### void QMessageBox::setButtonText(int button, const QString &text)

This function is deprecated. We strongly advise against using it in new code.

Sets the text of the message box button button to text. Setting the text of a button that is not in the message box is silently ignored.

Use addButton() instead.

See also buttonText().

### `[static]` QPixmap QMessageBox::standardIcon(QMessageBox::Icon icon)

This function is deprecated. We strongly advise against using it in new code.

Returns the pixmap used for a standard icon. This allows the pixmaps to be used in more complex message boxes. icon specifies the required icon, e.g. QMessageBox::Question, QMessageBox::Information, QMessageBox::Warning or QMessageBox::Critical.

Call QStyle::standardIcon() with QStyle::SP_MessageBoxInformation etc. instead.

### `[static]` int QMessageBox::warning(QWidget *parent, const QString &title, const QString &text, int button0, int button1, int button2 = 0)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use the overload taking StandardButtons instead.

Opens a warning message box with the given title and text. The dialog may have up to three buttons. Each of the button parameters, button0, button1 and button2 may be set to one of the following values:

- QMessageBox::NoButton
- QMessageBox::Ok
- QMessageBox::Cancel
- QMessageBox::Yes
- QMessageBox::No
- QMessageBox::Abort
- QMessageBox::Retry
- QMessageBox::Ignore
- QMessageBox::YesAll
- QMessageBox::NoAll

If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.

One button can be OR-ed with QMessageBox::Default, and one button can be OR-ed with QMessageBox::Escape.

Returns the identity (QMessageBox::Ok or QMessageBox::No or ...) of the button that was clicked.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also information(), question(), and critical().

### `[static]` int QMessageBox::warning(QWidget *parent, const QString &title, const QString &text, const QString &button0Text, const QString &button1Text = QString(), const QString &button2Text = QString(), int defaultButtonNumber = 0, int escapeButtonNumber = -1)

This function is deprecated since 6.2. We strongly advise against using it in new code.

Use the overload taking StandardButtons instead.

This is an overloaded function.

Displays a warning message box with the given title and text, as well as one, two, or three buttons. Returns the number of the button that was clicked (0, 1, or 2).

button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional, and button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the Escape button; pressing Escape is the same as clicking this button. It defaults to -1; supply 0, 1, or 2 to make pressing Escape equivalent to clicking the relevant button.

The message box is an application modal dialog box.

Warning: Do not delete parent during the execution of the dialog. If you want to do this, you should create the dialog yourself using one of the QMessageBox constructors.

See also information(), question(), and critical().