QDialogButtonBox ¶

概要 ¶

详细描述 ¶

Dialogs and message boxes typically present buttons in a layout that conforms to the interface guidelines for that platform. Invariably, different platforms have different layouts for their dialogs. QDialogButtonBox allows a developer to add buttons to it and will automatically use the appropriate layout for the user’s desktop environment.

大多数对话框按钮遵循某些角色。这些角色包括：

• 接受或拒绝对话框。

• 寻求帮助。

• 在对话框自身上履行动作 (譬如：重置字段或应用更改)。

There can also be alternate ways of dismissing the dialog which may cause destructive results.

Most dialogs have buttons that can almost be considered standard (e.g. OK and Cancel buttons). It is sometimes convenient to create these buttons in a standard way.

There are a couple ways of using QDialogButtonBox . One ways is to create the buttons (or button texts) yourself and add them to the button box, specifying their role.

findButton = QPushButton(self.tr("&Find"))
findButton.setDefault(True)
moreButton = QPushButton(self.tr("&More"))
moreButton.setCheckable(True)
moreButton.setAutoDefault(False)
buttonBox = QDialogButtonBox(Qt.Vertical)
buttonBox.addButton(findButton, QDialogButtonBox.ActionRole)
buttonBox.addButton(moreButton, QDialogButtonBox.ActionRole)
											

另外， QDialogButtonBox provides several standard buttons (e.g. OK, Cancel, Save) that you can use. They exist as flags so you can OR them together in the constructor.

self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok
                             | QDialogButtonBox.Cancel)
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.rejected.connect(self.reject)
											

You can mix and match normal buttons and standard buttons.

Currently the buttons are laid out in the following way if the button box is horizontal:

	Button box laid out in horizontal GnomeLayout
	Button box laid out in horizontal KdeLayout
	Button box laid out in horizontal MacLayout
	Button box laid out in horizontal WinLayout

The buttons are laid out the following way if the button box is vertical:

GnomeLayout	KdeLayout	MacLayout	WinLayout

Additionally, button boxes that contain only buttons with ActionRole or HelpRole can be considered modeless and have an alternate look on macOS:

非模态水平 MacLayout
非模态垂直 MacLayout

When a button is clicked in the button box, the clicked() signal is emitted for the actual button is that is pressed. For convenience, if the button has an AcceptRole , RejectRole ，或 HelpRole ， accepted() , rejected() ，或 helpRequested() signals are emitted respectively.

If you want a specific button to be default you need to call setDefault() on it yourself. However, if there is no default button set and to preserve which button is the default button across platforms when using the autoDefault property, the first push button with the accept role is made the default button when the QDialogButtonBox is shown,

另请参阅

QMessageBox QPushButton QDialog

class QDialogButtonBox ( buttons [ , parent=None ] ) ¶

QDialogButtonBox(buttons, orientation[, parent=None])

QDialogButtonBox([parent=None])

QDialogButtonBox(orientation[, parent=None])

param parent

QWidget

param buttons

StandardButtons

param orientation

取向

Constructs a horizontal button box with the given parent , containing the standard buttons specified by buttons .

另请参阅

orientation addButton()

Constructs a button box with the given orientation and parent , containing the standard buttons specified by buttons .

另请参阅

orientation addButton()

Constructs an empty, horizontal button box with the given parent .

另请参阅

orientation addButton()

Constructs an empty button box with the given orientation and parent .

另请参阅

orientation addButton()

PySide2.QtWidgets.QDialogButtonBox. ButtonRole ¶

This enum describes the roles that can be used to describe buttons in the button box. Combinations of these roles are as flags used to describe different aspects of their behavior.

常量	描述
QDialogButtonBox.InvalidRole	The button is invalid.
QDialogButtonBox.AcceptRole	Clicking the button causes the dialog to be accepted (e.g. OK).
QDialogButtonBox.RejectRole	Clicking the button causes the dialog to be rejected (e.g. Cancel).
QDialogButtonBox.DestructiveRole	Clicking the button causes a destructive change (e.g. for Discarding Changes) and closes the dialog.
QDialogButtonBox.ActionRole	Clicking the button causes changes to the elements within the dialog.
QDialogButtonBox.HelpRole	The button can be clicked to request help.
QDialogButtonBox.YesRole	The button is a “Yes”-like button.
QDialogButtonBox.NoRole	The button is a “No”-like button.
QDialogButtonBox.ApplyRole	The button applies current changes.
QDialogButtonBox.ResetRole	The button resets the dialog’s fields to default values.

另请参阅

StandardButton

PySide2.QtWidgets.QDialogButtonBox. StandardButton ¶

These enums describe flags for standard buttons. Each button has a defined ButtonRole .

常量	描述
QDialogButtonBox.Ok	An “OK” button defined with the AcceptRole .
QDialogButtonBox.Open	An “Open” button defined with the AcceptRole .
QDialogButtonBox.Save	A “Save” button defined with the AcceptRole .
QDialogButtonBox.Cancel	A “Cancel” button defined with the RejectRole .
QDialogButtonBox.Close	A “Close” button defined with the RejectRole .
QDialogButtonBox.Discard	A “Discard” or “Don’t Save” button, depending on the platform, defined with the DestructiveRole .
QDialogButtonBox.Apply	An “Apply” button defined with the ApplyRole .
QDialogButtonBox.Reset	A “Reset” button defined with the ResetRole .
QDialogButtonBox.RestoreDefaults	A “Restore Defaults” button defined with the ResetRole .
QDialogButtonBox.Help	A “Help” button defined with the HelpRole .
QDialogButtonBox.SaveAll	A “Save All” button defined with the AcceptRole .
QDialogButtonBox.Yes	A “Yes” button defined with the YesRole .
QDialogButtonBox.YesToAll	A “Yes to All” button defined with the YesRole .
QDialogButtonBox.No	A “No” button defined with the NoRole .
QDialogButtonBox.NoToAll	A “No to All” button defined with the NoRole .
QDialogButtonBox.Abort	An “Abort” button defined with the RejectRole .
QDialogButtonBox.Retry	A “Retry” button defined with the AcceptRole .
QDialogButtonBox.Ignore	An “Ignore” button defined with the AcceptRole .
QDialogButtonBox.NoButton	An invalid button.

另请参阅

ButtonRole standardButtons

PySide2.QtWidgets.QDialogButtonBox. ButtonLayout ¶

This enum describes the layout policy to be used when arranging the buttons contained in the button box.

常量	描述
QDialogButtonBox.WinLayout	Use a policy appropriate for applications on Windows.
QDialogButtonBox.MacLayout	Use a policy appropriate for applications on macOS.
QDialogButtonBox.KdeLayout	Use a policy appropriate for applications on KDE.
QDialogButtonBox.GnomeLayout	Use a policy appropriate for applications on GNOME.
QDialogButtonBox.AndroidLayout	Use a policy appropriate for applications on Android. This enum value was added in Qt 5.10.

The button layout is specified by the current style . However, on the X11 platform, it may be influenced by the desktop environment.

PySide2.QtWidgets.QDialogButtonBox. accepted ( ) ¶

PySide2.QtWidgets.QDialogButtonBox. addButton ( button , role ) ¶

参数

• button – QAbstractButton

• role – ButtonRole

添加给定 button to the button box with the specified role . If the role is invalid, the button is not added.

If the button has already been added, it is removed and added again with the new role.

注意

The button box takes ownership of the button.

另请参阅

removeButton() clear()

PySide2.QtWidgets.QDialogButtonBox. addButton ( button ) ¶

参数

button – StandardButton

返回类型

QPushButton

添加标准 button to the button box if it is valid to do so, and returns a push button. If button is invalid, it is not added to the button box, and zero is returned.

另请参阅

removeButton() clear()

PySide2.QtWidgets.QDialogButtonBox. addButton ( text , role ) ¶

参数

• text – unicode

• role – ButtonRole

返回类型

QPushButton

PySide2.QtWidgets.QDialogButtonBox. button ( which ) ¶

参数

which – StandardButton

返回类型

QPushButton

返回 QPushButton corresponding to the standard button which ，或 None if the standard button doesn’t exist in this button box.

另请参阅

standardButton() standardButtons() buttons()

PySide2.QtWidgets.QDialogButtonBox. buttonRole ( button ) ¶

参数

button – QAbstractButton

返回类型

ButtonRole

Returns the button role for the specified button . This function returns InvalidRole if button is None or has not been added to the button box.

另请参阅

buttons() addButton()

PySide2.QtWidgets.QDialogButtonBox. buttons ( ) ¶

返回类型

Returns a list of all the buttons that have been added to the button box.

另请参阅

buttonRole() addButton() removeButton()

PySide2.QtWidgets.QDialogButtonBox. centerButtons ( ) ¶

返回类型

bool

另请参阅

setCenterButtons()

PySide2.QtWidgets.QDialogButtonBox. clear ( ) ¶

Clears the button box, deleting all buttons within it.

另请参阅

removeButton() addButton()

PySide2.QtWidgets.QDialogButtonBox. clicked ( button ) ¶

参数

button – QAbstractButton

PySide2.QtWidgets.QDialogButtonBox. helpRequested ( ) ¶

PySide2.QtWidgets.QDialogButtonBox. orientation ( ) ¶

返回类型

取向

另请参阅

setOrientation()

PySide2.QtWidgets.QDialogButtonBox. rejected ( ) ¶

PySide2.QtWidgets.QDialogButtonBox. removeButton ( button ) ¶

参数

button – QAbstractButton

移除 button from the button box without deleting it and sets its parent to zero.

另请参阅

clear() buttons() addButton()

PySide2.QtWidgets.QDialogButtonBox. setCenterButtons ( center ) ¶

参数

center – bool

另请参阅

centerButtons()

PySide2.QtWidgets.QDialogButtonBox. setOrientation ( orientation ) ¶

参数

orientation – 取向

另请参阅

orientation()

PySide2.QtWidgets.QDialogButtonBox. setStandardButtons ( buttons ) ¶

参数

buttons – StandardButtons

另请参阅

standardButtons()

PySide2.QtWidgets.QDialogButtonBox. standardButton ( button ) ¶

参数

button – QAbstractButton

返回类型

StandardButton

Returns the standard button enum value corresponding to the given button ，或 NoButton 若给定 button isn’t a standard button.

另请参阅

button() buttons() standardButtons()

PySide2.QtWidgets.QDialogButtonBox. standardButtons ( ) ¶

返回类型

StandardButtons

另请参阅

setStandardButtons()