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QFontDialog Class

The QFontDialog class provides a dialog widget for selecting a font.

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QFontDialog Class

  • Header: QFontDialog

  • CMake:

    find_package(Qt6 REQUIRED COMPONENTS Widgets)

    target_link_libraries(mytarget PRIVATE Qt6::Widgets)

  • qmake: QT += widgets

  • Inherits: QDialog

  • Group: QFontDialog is part of Standard Dialogs

Detailed Description

A font dialog is created through one of the static getFont() functions.

Examples:

 
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bool ok;
QFont font = QFontDialog::getFont(
                &ok, QFont("Helvetica [Cronyx]", 10), this);
if (ok) {
    // the user clicked OK and font is set to the font the user selected
} else {
    // the user canceled the dialog; font is set to the initial
    // value, in this case Helvetica [Cronyx], 10
}

The dialog can also be used to set a widget's font directly:

 
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myWidget.setFont(QFontDialog::getFont(0, myWidget.font()));

If the user clicks OK the font they chose will be used for myWidget, and if they click Cancel the original font is used.

A font dialog in the Fusion widget style.

See Also

Member Type Documentation

 

enum QFontDialog::FontDialogOption

flags QFontDialog::FontDialogOptions

This enum specifies various options that affect the look and feel of a font dialog.

For instance, it allows to specify which type of font should be displayed. If none are specified all fonts available will be listed.

Note that the font filtering options might not be supported on some platforms (e.g. Mac). They are always supported by the non native dialog (used on Windows or Linux).

Constant

Value

Description

QFontDialog::NoButtons

0x00000001

Don't display OK and Cancel buttons. (Useful for "live dialogs".)

QFontDialog::DontUseNativeDialog

0x00000002

Use Qt's standard font dialog on the Mac instead of Apple's native font panel.

QFontDialog::ScalableFonts

0x00000004

Show scalable fonts

QFontDialog::NonScalableFonts

0x00000008

Show non scalable fonts

QFontDialog::MonospacedFonts

0x00000010

Show monospaced fonts

QFontDialog::ProportionalFonts

0x00000020

Show proportional fonts

The FontDialogOptions type is a typedef for QFlags<FontDialogOption>. It stores an OR combination of FontDialogOption values.

See Also

See also options, setOption(), testOption()

Property Documentation

 

currentFont : QFont

This property holds the current font of the dialog.

Access functions:

Notifier signal:

options : FontDialogOptions

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).

Access functions:

  • options() const

  • void setOptions( options)

See Also

See also setOption(), testOption()

Member Function Documentation

 

[explicit] QFontDialog::QFontDialog(QWidget *parent = nullptr)

Constructs a standard font dialog.

Use setCurrentFont() to set the initial font attributes.

The parent parameter is passed to the QDialog constructor.

See Also

See also getFont()

[explicit] QFontDialog::QFontDialog(const QFont &initial, QWidget *parent = nullptr)

Constructs a standard font dialog with the given parent and specified initial font.

[override virtual protected] void QFontDialog::changeEvent(QEvent *e)

QFont QFontDialog::currentFont() const

Returns the current font.

Getter function for property currentFont.

See Also

void QFontDialog::currentFontChanged(const QFont &font)

This signal is emitted when the current font is changed. The new font is specified in font.

The signal is emitted while a user is selecting a font. Ultimately, the chosen font may differ from the font currently selected.

Notifier signal for property currentFont.

See Also

[override virtual protected] void QFontDialog::done(int result)

Reimplements: QDialog::done(int r).

Closes the dialog and sets its result code to result. If this dialog is shown with exec(), done() causes the local event loop to finish, and exec() to return result.

See Also

See also QDialog::done()

void QFontDialog::fontSelected(const QFont &font)

This signal is emitted when a font has been selected. The selected font is specified in font.

The signal is only emitted when a user has chosen the final font to be used. It is not emitted while the user is changing the current font in the font dialog.

See Also

[static] QFont QFontDialog::getFont(bool *ok, const QFont &initial, QWidget *parent = nullptr, const QString &title = QString(), QFontDialog::FontDialogOptions options = FontDialogOptions())

Executes a modal font dialog and returns a font.

If the user clicks OK, the selected font is returned. If the user clicks Cancel, the initial font is returned.

The dialog is constructed with the given parent and the options specified in options. title is shown as the window title of the dialog and initial is the initially selected font. If the ok parameter is not-null, the value it refers to is set to true if the user clicks OK, and set to false if the user clicks Cancel.

Examples:

 
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bool ok;
QFont font = QFontDialog::getFont(&amp;ok, QFont("Times", 12), this);
if (ok) {
    // font is set to the font the user selected
} else {
    // the user canceled the dialog; font is set to the initial
    // value, in this case Times, 12.
}

The dialog can also be used to set a widget's font directly:

 
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myWidget.setFont(QFontDialog::getFont(0, myWidget.font()));

In this example, if the user clicks OK the font they chose will be used, and if they click Cancel the original font is used.

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 QFontDialog constructors.

[static] QFont QFontDialog::getFont(bool *ok, QWidget *parent = nullptr)

This is an overloaded function.

Executes a modal font dialog and returns a font.

If the user clicks OK, the selected font is returned. If the user clicks Cancel, the Qt default font is returned.

The dialog is constructed with the given parent. If the ok parameter is not-null, the value it refers to is set to true if the user clicks OK, and false if the user clicks Cancel.

Example:

 
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bool ok;
QFont font = QFontDialog::getFont(&amp;ok, this);
if (ok) {
    // font is set to the font the user selected
} else {
    // the user canceled the dialog; font is set to the default
    // application font, QApplication::font()
}

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 QFontDialog constructors.

void QFontDialog::open(QObject *receiver, const char *member)

Opens the dialog and connects its fontSelected() signal to the slot specified by receiver and member.

The signal will be disconnected from the slot when the dialog is closed.

QFont QFontDialog::selectedFont() const

Returns the font that the user selected by clicking the OK or equivalent button.

This font is not always the same as the font held by the currentFont property since the user can choose different fonts before finally selecting the one to use.

void QFontDialog::setCurrentFont(const QFont &font)

Sets the font highlighted in the QFontDialog to the given font.

Setter function for property currentFont.

See Also

See also currentFont(), selectedFont()

void QFontDialog::setOption(QFontDialog::FontDialogOption option, bool on = true)

Sets the given option to be enabled if on is true; otherwise, clears the given option.

See Also

See also options, testOption()

[override virtual] void QFontDialog::setVisible(bool visible)

bool QFontDialog::testOption(QFontDialog::FontDialogOption option) const

Returns true if the given option is enabled; otherwise, returns false.

See Also

See also options, setOption()

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