arrow key_arrow keys是哪个键

2024-05-22 11:41:50

很高兴能够参与这个arrow key问题集合的解答工作。我将根据自己的知识和经验，为每个问题提供准确而有用的回答，并尽量满足大家的需求。

1.查看历史会话数据

2.谁能提供一个小程序?

3.delphi中key=#13表示回车，其他的都还有什么呀

arrow key_arrow keys是哪个键

查看历史会话数据

设定历史缓存数目

更改当前终端会话历史缓存数目：

terminalhistory[sizenumber-of-lines]

terminalnohistory[sizenumber-of-lines]设为default10.

Example:

router#terminalhistorysize20

router#terminalnohistorysize20更改所有会话历史缓存数目：

history[sizenumber-of-lines]

nohistory[sizenumber-of-lines]Example:

router(config)#linecon0

router(config-line)#historysize20

router(config-line)#nohistorysize20

router(config-line)#end

调用历史命令

调用上一条命令：PressCtrl-Portheuparrowkey

调用下一条命令：PressCtrl-Northedownarrowkey.列出缓存中的命令：showhistory

router#showhistory

help

conft

terminalhistorysize20

terminalnohistorysize20

historysize20

conft

showhistory停止历史命令功能

停止当前会话的历史命令功能

Terminalnohistory

router#terminalnohistory

停止所有会话的历史命令功能

Nohistory

router(config)#lineconsole0

router(config-line)#nohistory

谁能提供一个小程序?

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class Exercise14_4 extends JFrame {

/**

* (Drawing lines using the arrow keys) Write a program that draws line

* segments using the arrow keys. The line starts from the center of the

* frame and draws toward east, north, west, or south when the right-arrow

* key, up-arrow key, left-arrow key, or down-arrow key is clicked, as shown

* in Figure 14.19(c).

int x = (int) (this.getWidth() / 2);

int y = (int) (this.getHeight() / 2);

int xl;

int yl;

LineDrawed line = new LineDrawed();

public Exercise14_4() {

this.add(line);

this.addKeyListener(new KeyAdapter() {

@Override

public void keyPressed(KeyEvent e) {

// TODO Auto-generated method stub

switch (e.getKeyCode()) {

case KeyEvent.VK_UP:

yl = y;

y -= 10;

// repaint();

break;

case KeyEvent.VK_DOWN:

yl = y;

y += 10;

// repaint();

break;

case KeyEvent.VK_LEFT:

xl = x;

x -= 10;

// repaint();

break;

case KeyEvent.VK_RIGHT:

xl = x;

x += 10;

break;

}

line.repaint();

}

});

}

public static void main(String[] args) {

Exercise14_4 frame = new Exercise14_4();

frame.setTitle("Exercise14_4");

frame.setSize(400, 300);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setLocationRelativeTo(null);

frame.setVisible(true);

}

class LineDrawed extends JPanel {

public LineDrawed() {

this.setBackground(Color.red);

}

@Override

protected void paintComponent(Graphics g) {

// TODO Auto-generated method stub

super.paintComponent(g);

g.drawLine(xl, yl, x, y);

}

delphi中key=#13表示回车，其他的都还有什么呀

Virtual-Key Codes

--------------------------------------------------------------------------------

The following table shows the symbolic constant names, hexadecimal values, and mouse or keyboard equivalents for the virtual-key codes used by the system. The codes are listed in numeric order.

Constants

VK_LBUTTON (01)

Left mouse button

VK_RBUTTON (02)

Right mouse button

VK_CANCEL (03)

Control-break processing

VK_MBUTTON (04)

Middle mouse button (three-button mouse)

VK_XBUTTON1 (05)

Windows 2000/XP: X1 mouse button

VK_XBUTTON2 (06)

Windows 2000/XP: X2 mouse button

- (07)

Undefined

VK_BACK (08)

BACKSPACE key

VK_TAB (09)

TAB key

- (0A-0B)

Reserved

VK_CLEAR (0C)

CLEAR key

VK_RETURN (0D)

ENTER key

- (0E-0F)

Undefined

VK_SHIFT (10)

SHIFT key

VK_CONTROL (11)

CTRL key

VK_MENU (12)

ALT key

VK_PAUSE (13)

PAUSE key

VK_CAPITAL (14)

CAPS LOCK key

VK_KANA (15)

Input Method Editor (IME) Kana mode

VK_HANGUEL (15)

IME Hanguel mode (maintained for compatibility; use VK_HANGUL)

VK_HANGUL (15)

IME Hangul mode

- (16)

Undefined

VK_JUNJA (17)

IME Junja mode

VK_FINAL (18)

IME final mode

VK_HANJA (19)

IME Hanja mode

VK_KANJI (19)

IME Kanji mode

- (1A)

Undefined

VK_ESCAPE (1B)

ESC key

VK_CONVERT (1C)

IME convert

VK_NONCONVERT (1D)

IME nonconvert

VK_ACCEPT (1E)

IME accept

VK_MODECHANGE (1F)

IME mode change request

VK_SPACE (20)

SPACEBAR

VK_PRIOR (21)

PAGE UP key

VK_NEXT (22)

PAGE DOWN key

VK_END (23)

END key

VK_HOME (24)

HOME key

VK_LEFT (25)

LEFT ARROW key

VK_UP (26)

UP ARROW key

VK_RIGHT (27)

RIGHT ARROW key

VK_DOWN (28)

DOWN ARROW key

VK_SELECT (29)

SELECT key

VK_PRINT (2A)

PRINT key

VK_EXECUTE (2B)

EXECUTE key

VK_SNAPSHOT (2C)

PRINT SCREEN key

VK_INSERT (2D)

INS key

VK_DELETE (2E)

DEL key

VK_HELP (2F)

HELP key

(30)

0 key

(31)

1 key

(32)

2 key

(33)

3 key

(34)

4 key

(35)

5 key

(36)

6 key

(37)

7 key

(38)

8 key

(39)

9 key

- (3A-40)

Undefined

(41)

A key

(42)

B key

(43)

C key

(44)

D key

(45)

E key

(46)

F key

(47)

G key

(48)

H key

(49)

I key

(4A)

J key

(4B)

K key

(4C)

L key

(4D)

M key

(4E)

N key

(4F)

O key

(50)

P key

(51)

Q key

(52)

R key

(53)

S key

(54)

T key

(55)

U key

(56)

V key

(57)

W key

(58)

X key

(59)

Y key

(5A)

Z key

VK_LWIN (5B)

Left Windows key (Microsoft? Natural? keyboard)

VK_RWIN (5C)

Right Windows key (Natural keyboard)

VK_APPS (5D)

Applications key (Natural keyboard)

- (5E)

Reserved

VK_SLEEP (5F)

Computer Sleep key

VK_NUMPAD0 (60)

Numeric keypad 0 key

VK_NUMPAD1 (61)

Numeric keypad 1 key

VK_NUMPAD2 (62)

Numeric keypad 2 key

VK_NUMPAD3 (63)

Numeric keypad 3 key

VK_NUMPAD4 (64)

Numeric keypad 4 key

VK_NUMPAD5 (65)

Numeric keypad 5 key

VK_NUMPAD6 (66)

Numeric keypad 6 key

VK_NUMPAD7 (67)

Numeric keypad 7 key

VK_NUMPAD8 (68)

Numeric keypad 8 key

VK_NUMPAD9 (69)

Numeric keypad 9 key

VK_MULTIPLY (6A)

Multiply key

VK_ADD (6B)

Add key

VK_SEPARATOR (6C)

Separator key

VK_SUBTRACT (6D)

Subtract key

VK_DECIMAL (6E)

Decimal key

VK_DIVIDE (6F)

Divide key

VK_F1 (70)

F1 key

VK_F2 (71)

F2 key

VK_F3 (72)

F3 key

VK_F4 (73)

F4 key

VK_F5 (74)

F5 key

VK_F6 (75)

F6 key

VK_F7 (76)

F7 key

VK_F8 (77)

F8 key

VK_F9 (78)

F9 key

VK_F10 (79)

F10 key

VK_F11 (7A)

F11 key

VK_F12 (7B)

F12 key

VK_F13 (7C)

F13 key

VK_F14 (7D)

F14 key

VK_F15 (7E)

F15 key

VK_F16 (7F)

F16 key

VK_F17 (80H)

F17 key

VK_F18 (81H)

F18 key

VK_F19 (82H)

F19 key

VK_F20 (83H)

F20 key

VK_F21 (84H)

F21 key

VK_F22 (85H)

F22 key

VK_F23 (86H)

F23 key

VK_F24 (87H)

F24 key

- (88-8F)

Unassigned

VK_NUMLOCK (90)

NUM LOCK key

VK_SCROLL (91)

SCROLL LOCK key

(92-96)

OEM specific

- (97-9F)

Unassigned

VK_LSHIFT (A0)

Left SHIFT key

VK_RSHIFT (A1)

Right SHIFT key

VK_LCONTROL (A2)

Left CONTROL key

VK_RCONTROL (A3)

Right CONTROL key

VK_LMENU (A4)

Left MENU key

VK_RMENU (A5)

Right MENU key

VK_BROWSER_BACK (A6)

Windows 2000/XP: Browser Back key

VK_BROWSER_FORWARD (A7)

Windows 2000/XP: Browser Forward key

VK_BROWSER_REFRESH (A8)

Windows 2000/XP: Browser Refresh key

VK_BROWSER_STOP (A9)

Windows 2000/XP: Browser Stop key

VK_BROWSER_SEARCH (AA)

Windows 2000/XP: Browser Search key

VK_BROWSER_FAVORITES (AB)

Windows 2000/XP: Browser Favorites key

VK_BROWSER_HOME (AC)

Windows 2000/XP: Browser Start and Home key

VK_VOLUME_MUTE (AD)

Windows 2000/XP: Volume Mute key

VK_VOLUME_DOWN (AE)

Windows 2000/XP: Volume Down key

VK_VOLUME_UP (AF)

Windows 2000/XP: Volume Up key

VK_MEDIA_NEXT_TRACK (B0)

Windows 2000/XP: Next Track key

VK_MEDIA_PREV_TRACK (B1)

Windows 2000/XP: Previous Track key

VK_MEDIA_STOP (B2)

Windows 2000/XP: Stop Media key

VK_MEDIA_PLAY_PAUSE (B3)

Windows 2000/XP: Play/Pause Media key

VK_LAUNCH_MAIL (B4)

Windows 2000/XP: Start Mail key

VK_LAUNCH_MEDIA_SELECT (B5)

Windows 2000/XP: Select Media key

VK_LAUNCH_APP1 (B6)

Windows 2000/XP: Start Application 1 key

VK_LAUNCH_APP2 (B7)

Windows 2000/XP: Start Application 2 key

- (B8-B9)

Reserved

VK_OEM_1 (BA)

Used for miscellaneous characters; it can vary by keyboard.

Windows 2000/XP: For the US standard keyboard, the ';:' key

VK_OEM_PLUS (BB)

Windows 2000/XP: For any country/region, the '+' key

VK_OEM_COMMA (BC)

Windows 2000/XP: For any country/region, the ',' key

VK_OEM_MINUS (BD)

Windows 2000/XP: For any country/region, the '-' key

VK_OEM_PERIOD (BE)

Windows 2000/XP: For any country/region, the '.' key

VK_OEM_2 (BF)

Used for miscellaneous characters; it can vary by keyboard.

Windows 2000/XP: For the US standard keyboard, the '/?' key

VK_OEM_3 (C0)

Used for miscellaneous characters; it can vary by keyboard.

Windows 2000/XP: For the US standard keyboard, the '`~' key

- (C1-D7)

Reserved

- (D8-DA)

Unassigned

VK_OEM_4 (DB)

Used for miscellaneous characters; it can vary by keyboard.

Windows 2000/XP: For the US standard keyboard, the '[{' key

VK_OEM_5 (DC)

Used for miscellaneous characters; it can vary by keyboard.

Windows 2000/XP: For the US standard keyboard, the '\|' key

VK_OEM_6 (DD)

Used for miscellaneous characters; it can vary by keyboard.

Windows 2000/XP: For the US standard keyboard, the ']}' key

VK_OEM_7 (DE)

Used for miscellaneous characters; it can vary by keyboard.

Windows 2000/XP: For the US standard keyboard, the 'single-quote/double-quote' key

VK_OEM_8 (DF)

Used for miscellaneous characters; it can vary by keyboard.

- (E0)

Reserved

(E1)

OEM specific

VK_OEM_102 (E2)

Windows 2000/XP: Either the angle bracket key or the backslash key on the RT 102-key keyboard

(E3-E4)

OEM specific

VK_PROCESSKEY (E5)

Windows 95/98/Me, Windows NT 4.0, Windows 2000/XP: IME PROCESS key

(E6)

OEM specific

VK_PACKET (E7)

Windows 2000/XP: Used to pass Unicode characters as if they were keystrokes. The VK_PACKET key is the low word of a 32-bit Virtual Key value used for non-keyboard input methods. For more information, see Remark in KEYBDINPUT, SendInput, WM_KEYDOWN, and WM_KEYUP

- (E8)

Unassigned

(E9-F5)

OEM specific

VK_ATTN (F6)

Attn key

VK_CRSEL (F7)

CrSel key

VK_EXSEL (F8)

ExSel key

VK_EREOF (F9)

Erase EOF key