QKeySequence ¶

函数 ¶

静态函数 ¶

标准快捷键 ¶

QKeySequence defines many standard keyboard shortcuts to reduce the amount of effort required when setting up actions in a typical application. The table below shows some common key sequences that are often used for these standard shortcuts by applications on four widely-used platforms. Note that on macOS, the Ctrl value corresponds to the Command keys on the Macintosh keyboard, and the Meta value corresponds to the Control keys.

StandardKey	Windows	macOS	KDE Plasma	GNOME
HelpContents	F1	Ctrl+?	F1	F1
WhatsThis	Shift+F1	Shift+F1	Shift+F1	Shift+F1
打开	Ctrl+O	Ctrl+O	Ctrl+O	Ctrl+O
Close	Ctrl+F4, Ctrl+W	Ctrl+W, Ctrl+F4	Ctrl+W	Ctrl+W
Save	Ctrl+S	Ctrl+S	Ctrl+S	Ctrl+S
Quit		Ctrl+Q	Ctrl+Q	Ctrl+Q
SaveAs		Ctrl+Shift+S		Ctrl+Shift+S
New	Ctrl+N	Ctrl+N	Ctrl+N	Ctrl+N
Delete	Del	Del, Meta+D	Del, Ctrl+D	Del, Ctrl+D
Cut	Ctrl+X, Shift+Del	Ctrl+X, Meta+K	Ctrl+X, F20, Shift+Del	Ctrl+X, F20, Shift+Del
Copy	Ctrl+C, Ctrl+Ins	Ctrl+C	Ctrl+C, F16, Ctrl+Ins	Ctrl+C, F16, Ctrl+Ins
Paste	Ctrl+V, Shift+Ins	Ctrl+V, Meta+Y	Ctrl+V, F18, Shift+Ins	Ctrl+V, F18, Shift+Ins
Preferences		Ctrl+,
Undo	Ctrl+Z, Alt+Backspace	Ctrl+Z	Ctrl+Z, F14	Ctrl+Z, F14
Redo	Ctrl+Y, Shift+Ctrl+Z, Alt+Shift+Backspace	Ctrl+Shift+Z	Ctrl+Shift+Z	Ctrl+Shift+Z
Back	Alt+Left, Backspace	Ctrl+[	Alt+Left	Alt+Left
Forward	Alt+Right, Shift+Backspace	Ctrl+]	Alt+Right	Alt+Right
Refresh	F5	F5	F5	Ctrl+R, F5
ZoomIn	Ctrl+Plus	Ctrl+Plus	Ctrl+Plus	Ctrl+Plus
ZoomOut	Ctrl+Minus	Ctrl+Minus	Ctrl+Minus	Ctrl+Minus
FullScreen	F11, Alt+Enter	Ctrl+Meta+F	F11, Ctrl+Shift+F	Ctrl+F11
Print	Ctrl+P	Ctrl+P	Ctrl+P	Ctrl+P
AddTab	Ctrl+T	Ctrl+T	Ctrl+Shift+N, Ctrl+T	Ctrl+T
NextChild	Ctrl+Tab, Forward, Ctrl+F6	Ctrl+}, Forward, Ctrl+Tab	Ctrl+Tab, Forward, Ctrl+Comma	Ctrl+Tab, Forward
PreviousChild	Ctrl+Shift+Tab, Back, Ctrl+Shift+F6	Ctrl+{, Back, Ctrl+Shift+Tab	Ctrl+Shift+Tab, Back, Ctrl+Period	Ctrl+Shift+Tab, Back
Find	Ctrl+F	Ctrl+F	Ctrl+F	Ctrl+F
FindNext	F3, Ctrl+G	Ctrl+G	F3	Ctrl+G, F3
FindPrevious	Shift+F3, Ctrl+Shift+G	Ctrl+Shift+G	Shift+F3	Ctrl+Shift+G, Shift+F3
Replace	Ctrl+H	(none)	Ctrl+R	Ctrl+H
SelectAll	Ctrl+A	Ctrl+A	Ctrl+A	Ctrl+A
Deselect			Ctrl+Shift+A	Ctrl+Shift+A
Bold	Ctrl+B	Ctrl+B	Ctrl+B	Ctrl+B
Italic	Ctrl+I	Ctrl+I	Ctrl+I	Ctrl+I
Underline	Ctrl+U	Ctrl+U	Ctrl+U	Ctrl+U
MoveToNextChar	Right	Right, Meta+F	Right	Right
MoveToPreviousChar	Left	Left, Meta+B	Left	Left
MoveToNextWord	Ctrl+Right	Alt+Right	Ctrl+Right	Ctrl+Right
MoveToPreviousWord	Ctrl+Left	Alt+Left	Ctrl+Left	Ctrl+Left
MoveToNextLine	Down	Down, Meta+N	Down	Down
MoveToPreviousLine	Up	Up, Meta+P	Up	Up
MoveToNextPage	PgDown	PgDown, Alt+PgDown, Meta+Down, Meta+PgDown, Meta+V	PgDown	PgDown
MoveToPreviousPage	PgUp	PgUp, Alt+PgUp, Meta+Up, Meta+PgUp	PgUp	PgUp
MoveToStartOfLine	首页	Ctrl+Left, Meta+Left	首页	首页
MoveToEndOfLine	End	Ctrl+Right, Meta+Right	End, Ctrl+E	End, Ctrl+E
MoveToStartOfBlock	(none)	Alt+Up, Meta+A	(none)	(none)
MoveToEndOfBlock	(none)	Alt+Down, Meta+E	(none)	(none)
MoveToStartOfDocument	Ctrl+Home	Ctrl+Up, Home	Ctrl+Home	Ctrl+Home
MoveToEndOfDocument	Ctrl+End	Ctrl+Down, End	Ctrl+End	Ctrl+End
SelectNextChar	Shift+Right	Shift+Right	Shift+Right	Shift+Right
SelectPreviousChar	Shift+Left	Shift+Left	Shift+Left	Shift+Left
SelectNextWord	Ctrl+Shift+Right	Alt+Shift+Right	Ctrl+Shift+Right	Ctrl+Shift+Right
SelectPreviousWord	Ctrl+Shift+Left	Alt+Shift+Left	Ctrl+Shift+Left	Ctrl+Shift+Left
SelectNextLine	Shift+Down	Shift+Down	Shift+Down	Shift+Down
SelectPreviousLine	Shift+Up	Shift+Up	Shift+Up	Shift+Up
SelectNextPage	Shift+PgDown	Shift+PgDown	Shift+PgDown	Shift+PgDown
SelectPreviousPage	Shift+PgUp	Shift+PgUp	Shift+PgUp	Shift+PgUp
SelectStartOfLine	Shift+Home	Ctrl+Shift+Left	Shift+Home	Shift+Home
SelectEndOfLine	Shift+End	Ctrl+Shift+Right	Shift+End	Shift+End
SelectStartOfBlock	(none)	Alt+Shift+Up, Meta+Shift+A	(none)	(none)
SelectEndOfBlock	(none)	Alt+Shift+Down, Meta+Shift+E	(none)	(none)
SelectStartOfDocument	Ctrl+Shift+Home	Ctrl+Shift+Up, Shift+Home	Ctrl+Shift+Home	Ctrl+Shift+Home
SelectEndOfDocument	Ctrl+Shift+End	Ctrl+Shift+Down, Shift+End	Ctrl+Shift+End	Ctrl+Shift+End
DeleteStartOfWord	Ctrl+Backspace	Alt+Backspace	Ctrl+Backspace	Ctrl+Backspace
DeleteEndOfWord	Ctrl+Del	(none)	Ctrl+Del	Ctrl+Del
DeleteEndOfLine	(none)	(none)	Ctrl+K	Ctrl+K
DeleteCompleteLine	(none)	(none)	Ctrl+U	Ctrl+U
InsertParagraphSeparator	Enter	Enter	Enter	Enter
InsertLineSeparator	Shift+Enter	Meta+Enter, Meta+O	Shift+Enter	Shift+Enter
Backspace	(none)	Meta+H	(none)	(none)
Cancel	Escape	Escape, Ctrl+.	Escape	Escape

Note that, since the key sequences used for the standard shortcuts differ between platforms, you still need to test your shortcuts on each platform to ensure that you do not unintentionally assign the same key sequence to many actions.

键盘布局问题 ¶

Many key sequence specifications are chosen by developers based on the layout of certain types of keyboard, rather than choosing keys that represent the first letter of an action’s name, such as Ctrl S (“Ctrl+S”) or Ctrl C (“Ctrl+C”). Additionally, because certain symbols can only be entered with the help of modifier keys on certain keyboard layouts, key sequences intended for use with one keyboard layout may map to a different key, map to no keys at all, or require an additional modifier key to be used on different keyboard layouts.

For example, the shortcuts, Ctrl plus and Ctrl minus, are often used as shortcuts for zoom operations in graphics applications, and these may be specified as “Ctrl++” and “Ctrl+-” respectively. However, the way these shortcuts are specified and interpreted depends on the keyboard layout. Users of Norwegian keyboards will note that the + and - keys are not adjacent on the keyboard, but will still be able to activate both shortcuts without needing to press the Shift key. However, users with British keyboards will need to hold down the Shift key to enter the + symbol, making the shortcut effectively the same as “Ctrl+Shift+=”.

Although some developers might resort to fully specifying all the modifiers they use on their keyboards to activate a shortcut, this will also result in unexpected behavior for users of different keyboard layouts.

For example, a developer using a British keyboard may decide to specify “Ctrl+Shift+=” as the key sequence in order to create a shortcut that coincidentally behaves in the same way as Ctrl plus. However, the = key needs to be accessed using the Shift key on Norwegian keyboard, making the required shortcut effectively Ctrl Shift Shift = (an impossible key combination).

As a result, both human-readable strings and hard-coded key codes can both be problematic to use when specifying a key sequence that can be used on a variety of different keyboard layouts. Only the use of standard shortcuts guarantees that the user will be able to use the shortcuts that the developer intended.

Despite this, we can address this issue by ensuring that human-readable strings are used, making it possible for translations of key sequences to be made for users of different languages. This approach will be successful for users whose keyboards have the most typical layout for the language they are using.

GNU Emacs 样式键序列 ¶

Key sequences similar to those used in GNU Emacs , allowing up to four key codes, can be created by using the multiple argument constructor, or by passing a human-readable string of comma-separated key sequences.

For example, the key sequence, Ctrl X followed by Ctrl C, can be specified using either of the following ways:

QKeySequence(tr("Ctrl+X, Ctrl+C"))
QKeySequence(Qt.CTRL + Qt.Key_X, Qt.CTRL + Qt.Key_C)
												

警告

A QApplication instance must have been constructed before a QKeySequence is created; otherwise, your application may crash.

另请参阅

QShortcut

class QKeySequence ¶

QKeySequence(key)

QKeySequence(ks)

QKeySequence(key[, format=NativeText])

QKeySequence(k1[, k2=0[, k3=0[, k4=0]]])

param k1

int

param k2

int

param k3

int

param k4

int

param format

SequenceFormat

param ks

QKeySequence

param key

StandardKey

构造空的键序列。

构造 QKeySequence object for the given key . The result will depend on the currently running platform.

The resulting object will be based on the first element in the list of key bindings for the key .

创建键序列从 key 字符串，基于 format .

For example “Ctrl+O” gives CTRL+’O’. The strings “Ctrl”, “Shift”, “Alt” and “Meta” are recognized, as well as their translated equivalents in the ” QShortcut ” context (using tr() ).

Up to four key codes may be entered by separating them with commas, e.g. “Alt+X,Ctrl+S,Q”.

This constructor is typically used with tr (), so that shortcut keys can be replaced in translations:

file = QMenu(self)
file.addAction(tr("&Open..."), self, SLOT("open()"),
               QKeySequence(tr("Ctrl+O", "File|Open")))
												

Note the “File|Open” translator comment. It is by no means necessary, but it provides some context for the human translator.

Constructs a key sequence with up to 4 keys k1 , k2 , k3 and k4 .

The key codes are listed in Key and can be combined with modifiers (see Modifier ) such as SHIFT , CTRL , ALT ，或 META .

PySide2.QtGui.QKeySequence. StandardKey ¶

This enum represent standard key bindings. They can be used to assign platform dependent keyboard shortcuts to a QAction .

Note that the key bindings are platform dependent. The currently bound shortcuts can be queried using keyBindings() .

常量	描述
QKeySequence.AddTab	Add new tab.
QKeySequence.Back	Navigate back.
QKeySequence.Backspace	删除上一字符。
QKeySequence.Bold	Bold text.
QKeySequence.Close	关闭文档/选项卡。
QKeySequence.Copy	拷贝。
QKeySequence.Cut	剪切。
QKeySequence.Delete	删除。
QKeySequence.DeleteEndOfLine	删除行尾。
QKeySequence.DeleteEndOfWord	Delete word from the end of the cursor.
QKeySequence.DeleteStartOfWord	Delete the beginning of a word up to the cursor.
QKeySequence.DeleteCompleteLine	Delete the entire line.
QKeySequence.Find	Find in document.
QKeySequence.FindNext	查找下一结果。
QKeySequence.FindPrevious	查找上一结果。
QKeySequence.Forward	Navigate forward.
QKeySequence.HelpContents	打开帮助内容。
QKeySequence.InsertLineSeparator	Insert a new line.
QKeySequence.InsertParagraphSeparator	Insert a new paragraph.
QKeySequence.Italic	Italic text.
QKeySequence.MoveToEndOfBlock	Move cursor to end of block. This shortcut is only used on the macOS.
QKeySequence.MoveToEndOfDocument	Move cursor to end of document.
QKeySequence.MoveToEndOfLine	移动光标到行尾。
QKeySequence.MoveToNextChar	移动光标到下一字符。
QKeySequence.MoveToNextLine	移动光标到下一行。
QKeySequence.MoveToNextPage	移动光标到下一页。
QKeySequence.MoveToNextWord	移动光标到下一单词。
QKeySequence.MoveToPreviousChar	移动光标到上一字符。
QKeySequence.MoveToPreviousLine	移动光标到上一行。
QKeySequence.MoveToPreviousPage	移动光标到上一页。
QKeySequence.MoveToPreviousWord	Move cursor to previous word.
QKeySequence.MoveToStartOfBlock	Move cursor to start of a block. This shortcut is only used on macOS.
QKeySequence.MoveToStartOfDocument	Move cursor to start of document.
QKeySequence.MoveToStartOfLine	移动光标到行起始。
QKeySequence.New	创建新文档。
QKeySequence.NextChild	Navigate to next tab or child window.
QKeySequence.Open	打开文档。
QKeySequence.Paste	粘贴。
QKeySequence.Preferences	打开首选项对话框。
QKeySequence.PreviousChild	Navigate to previous tab or child window.
QKeySequence.Print	打印文档。
QKeySequence.Quit	离开应用程序。
QKeySequence.Redo	重做。
QKeySequence.Refresh	Refresh or reload current document.
QKeySequence.Replace	查找并替换。
QKeySequence.SaveAs	Save document after prompting the user for a file name.
QKeySequence.Save	保存文档。
QKeySequence.SelectAll	选择所有文本。
QKeySequence.Deselect	Deselect text. Since 5.1
QKeySequence.SelectEndOfBlock	Extend selection to the end of a text block. This shortcut is only used on macOS.
QKeySequence.SelectEndOfDocument	Extend selection to end of document.
QKeySequence.SelectEndOfLine	Extend selection to end of line.
QKeySequence.SelectNextChar	Extend selection to next character.
QKeySequence.SelectNextLine	Extend selection to next line.
QKeySequence.SelectNextPage	Extend selection to next page.
QKeySequence.SelectNextWord	Extend selection to next word.
QKeySequence.SelectPreviousChar	Extend selection to previous character.
QKeySequence.SelectPreviousLine	Extend selection to previous line.
QKeySequence.SelectPreviousPage	Extend selection to previous page.
QKeySequence.SelectPreviousWord	Extend selection to previous word.
QKeySequence.SelectStartOfBlock	Extend selection to the start of a text block. This shortcut is only used on macOS.
QKeySequence.SelectStartOfDocument	Extend selection to start of document.
QKeySequence.SelectStartOfLine	Extend selection to start of line.
QKeySequence.Underline	下划线文本。
QKeySequence.Undo	撤消。
QKeySequence.UnknownKey	Unbound key.
QKeySequence.WhatsThis	Activate “what’s this”.
QKeySequence.ZoomIn	放大。
QKeySequence.ZoomOut	缩小。
QKeySequence.FullScreen	Toggle the window state to/from full screen.
QKeySequence.Cancel	取消当前操作。

PySide2.QtGui.QKeySequence. SequenceFormat ¶

常量	描述
QKeySequence.NativeText	The key sequence as a platform specific string. This means that it will be shown translated and on the Mac it will resemble a key sequence from the menu bar. This enum is best used when you want to display the string to the user.
QKeySequence.PortableText	The key sequence is given in a “portable” format, suitable for reading and writing to a file. In many cases, it will look similar to the native text on Windows and X11.

PySide2.QtGui.QKeySequence. SequenceMatch ¶

常量	描述
QKeySequence.NoMatch	The key sequences are different; not even partially matching.
QKeySequence.PartialMatch	The key sequences match partially, but are not the same.
QKeySequence.ExactMatch	The key sequences are the same.

PySide2.QtGui.QKeySequence. __getitem__ ( ) ¶

PySide2.QtGui.QKeySequence. __reduce__ ( ) ¶

返回类型

PyObject

PySide2.QtGui.QKeySequence. __repr__ ( ) ¶

返回类型

PyObject

PySide2.QtGui.QKeySequence. count ( ) ¶

返回类型

int

Returns the number of keys in the key sequence. The maximum is 4.

static PySide2.QtGui.QKeySequence. fromString ( str [ , format=PortableText ] ) ¶

参数

• str – unicode

• format – SequenceFormat

返回类型

QKeySequence

返回 QKeySequence 从字符串 str 基于 format .

另请参阅

toString()

PySide2.QtGui.QKeySequence. isEmpty ( ) ¶

返回类型

bool

返回 true if the key sequence is empty; otherwise returns false.

static PySide2.QtGui.QKeySequence. keyBindings ( key ) ¶

参数

key – StandardKey

返回类型

Returns a list of key bindings for the given key . The result of calling this function will vary based on the target platform. The first element of the list indicates the primary shortcut for the given platform. If the result contains more than one result, these can be considered alternative shortcuts on the same platform for the given key .

static PySide2.QtGui.QKeySequence. listFromString ( str [ , format=PortableText ] ) ¶

参数

• str – unicode

• format – SequenceFormat

返回类型

Return a list of QKeySequence 从字符串 str 基于 format .

另请参阅

fromString() listToString()

static PySide2.QtGui.QKeySequence. listToString ( list [ , format=PortableText ] ) ¶

参数

• list –

• format – SequenceFormat

返回类型

unicode

Return a string representation of list 基于 format .

另请参阅

toString() listFromString()

PySide2.QtGui.QKeySequence. 匹配 ( seq ) ¶

参数

seq – QKeySequence

返回类型

SequenceMatch

Matches the sequence with seq 。返回 ExactMatch if successful, PartialMatch if seq matches incompletely, and NoMatch if the sequences have nothing in common. Returns NoMatch if seq is shorter.

static PySide2.QtGui.QKeySequence. mnemonic ( text ) ¶

参数

text – unicode

返回类型

QKeySequence

Returns the shortcut key sequence for the mnemonic in text , or an empty key sequence if no mnemonics are found.

For example, mnemonic(“E&xit”) returns Qt::ALT+Qt::Key_X , mnemonic(“&Quit”) returns ALT+Key_Q , and mnemonic(“Quit”) returns an empty QKeySequence .

We provide a list of common mnemonics in English. At the time of writing, Microsoft and Open Group do not appear to have issued equivalent recommendations for other languages.

PySide2.QtGui.QKeySequence. __ne__ ( other ) ¶

参数

other – QKeySequence

返回类型

bool

返回 true if this key sequence is not equal to the other key sequence; otherwise returns false .

PySide2.QtGui.QKeySequence. __lt__ ( ks ) ¶

参数

ks – QKeySequence

返回类型

bool

PySide2.QtGui.QKeySequence. __le__ ( other ) ¶

参数

other – QKeySequence

返回类型

bool

PySide2.QtGui.QKeySequence. __eq__ ( other ) ¶

参数

other – QKeySequence

返回类型

bool

返回 true if this key sequence is equal to the other key sequence; otherwise returns false .

PySide2.QtGui.QKeySequence. __gt__ ( other ) ¶

参数

other – QKeySequence

返回类型

bool

返回 true if this key sequence is larger than the other key sequence; otherwise returns false .

另请参阅

operator==() operator!=() operator operator operator>=()

PySide2.QtGui.QKeySequence. __ge__ ( other ) ¶

参数

other – QKeySequence

返回类型

bool

返回 true if this key sequence is larger or equal to the other key sequence; otherwise returns false .

另请参阅

operator==() operator!=() operator operator>() operator

PySide2.QtGui.QKeySequence. swap ( other ) ¶

参数

other – QKeySequence

Swaps key sequence other with this key sequence. This operation is very fast and never fails.

PySide2.QtGui.QKeySequence. toString ( [ format=PortableText ] ) ¶

参数

format – SequenceFormat

返回类型

unicode

Return a string representation of the key sequence, based on format .

For example, the value CTRL + Key_O results in “Ctrl+O”. If the key sequence has multiple key codes, each is separated by commas in the string returned, such as “Alt+X, Ctrl+Y, Z”. The strings, “Ctrl”, “Shift”, etc. are translated using tr() in the ” QShortcut ” context.

If the key sequence has no keys, an empty string is returned.

On macOS, the string returned resembles the sequence that is shown in the menu bar if format is NativeText ; otherwise, the string uses the “portable” format, suitable for writing to a file.

另请参阅

fromString()