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Ответ на первый вопрос. Есть такая функция под названием GetKeyboardState. Вот что о ней написано в MSDN: | Цитата | GetKeyboardState
The GetKeyboardState function copies the status of the 256 virtual keys to the specified buffer.
BOOL GetKeyboardState(
PBYTE lpKeyState // pointer to array to receive status data
);
Parameters
lpKeyState
Pointer to the 256-byte array that will receive the status data for each virtual key.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, callGetLastError.
Remarks
An application can call this function to retrieve the current status of all the virtual keys. The status changes as a thread removes keyboard messages from its message queue. The status does not change as keyboard messages are posted to the thread's message queue, nor does it change as keyboard messages are posted to or retrieved from message queues of other threads. (Exception: Threads that are connected viaAttachThreadInput share the same keyboard state.)
When the function returns, each member of the array pointed to by the lpKeyState parameter contains status data for a virtual key. If the high-order bit is 1, the key is down; otherwise, it is up. If the low-order bit is 1, the key is toggled. A key, such as the caps lock key, is toggled if it is turned on. The key is off and untoggled if the low-order bit is 0. A toggle key's indicator light (if any) on the keyboard will be on when the key is toggled, and off when the key is untoggled.
To retrieve status information for an individual key, use the GetKeyState function. To retrieve the current state for an individual key regardless of whether the corresponding keyboard message has been retrieved from the message queue, use the GetAsyncKeyState function
An application can use the virtual-key code constants VK_SHIFT, VK_CONTROL and VK_MENU as indices into the array pointed to by lpKeyState. This gives the status of the shift, ctrl, or alt keys without distinguishing between left and right. An application can also use the following virtual-key code constants as indices to distinguish between the left and right instances of those keys.
VK_LSHIFT VK_RSHIFT
VK_LCONTROL VK_RCONTROL
VK_LMENU VK_RMENU
These left- and right-distinguishing constants are available to an application only through the GetKeyboardState, SetKeyboardState, GetAsyncKeyState, GetKeyState, and MapVirtualKey functions.
QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in winuser.h.
Import Library: Use user32.lib.
See Also
Keyboard Input Overview, Keyboard Input Functions, GetKeyState, GetAsyncKeyState, MapVirtualKey, SetKeyboardState |
Таким образом тебе надо сделать что-то по типа: | Код | Private Declare Function GetKeyboardState Lib "user32" (pbKeyState As Byte) As Long
Const VK_CAPITAL = &H14
Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
Dim keys(0 To 255) As Byte
Dim CapsLockState As Boolean
GetKeyboardState keys(0)
CapsLockState = keys(VK_CAPITAL) ' нажат ли shift
...
|
или например для того чтобы узнать нажаты ли одновременно циферки 0 и 1: | Код | Option Explicit
Private Declare Function GetKeyboardState Lib "user32" (pbKeyState As Byte) As Long
Const VK_0 = &H30
Const VK_1 = &H31
Private Sub Form_KeyPress(KeyAscii As Integer)
Dim keys(0 To 255) As Byte
Dim CapsLockState As Boolean
GetKeyboardState keys(0)
If (keys(VK_0) And keys(VK_1)) Then MsgBox "Вот они!"
End Sub |
Ну а вот тебе значения констант из того же MSDN: | Цитата | Virtual-Key Codes
Introduction
The virtual-key codes provide a hardware- and language-independent method of identifying keyboard keys. Each virtual-key code represents a unique keyboard key and also identifies the purpose of that key. The keyboard driver must provide one or more keyboard layouts that maps keyboard scan codes to the appropriate virtual-key codes.
Required Virtual Keys
The complete virtual-key code set consists of 256 byte values in the range 0 to 255. Most, but not all, of the values used by standard drivers are in the range 0 to 127. There is a loose distinction between "standard" keys, which do not vary much, and "OEM" keys, which do vary from keyboard to keyboard.
For full Windows functionality, a keyboard driver must provide the following virtual keys:
Virtual-key code
Description
VK_0 through VK_9
Number keys (not on numeric keypad): 0 through 9
VK_A through VK_Z
Letter keys: A through Z
VK_BACK
BACKSPACE key
VK_CONTROL
CTRL key
VK_DELETE
DELETE key
VK_DOWN
Down direction key
VK_END
END key
VK_ESCAPE
ESC key
VK_F1 through VK_F10
F1 through F10 keys
VK_HOME
HOME key
VK_INSERT
INSERT key
VK_LEFT
Left direction key
VK_MENU
ALT key
VK_NEXT
PAGE DOWN key
VK_PRIOR
PAGE UP key
VK_RIGHT
Right direction key
VK_SHIFT
Left and right SHIFT keys
VK_SNAPSHOT
PRINTSCREEN key
VK_SPACE
SPACE key
VK_TAB
TAB key
VK_UP
Up direction key
Shift keys must be available in the combinations unshifted, SHIFT, CTRL, and CTRL+ALT.
Most keyboards, the virtual-key codes VK_INSERT, VK_DELETE, VK_HOME, VK_END, VK_PRIOR, and VK_NEXT are generated on the numeric keypad only if NUMLOCK is off.
Optional Virtual Keys
If a keyboard has a numeric pad, the numeric keys are frequently used as cursor-control and editing keys if NUMLOCK is off. If NUMLOCK is on, the virtual-key codes VK_NUMPAD0 through VK_NUMPAD9 are used for the digits. Keyboards with a DELETE key that also generates the decimal point (period or comma) use VK_DELETE and VK_DECIMAL to distinguish between the two uses of the key.
Keyboards commonly contain various "lock" keys, such as VK_CAPITAL and VK_NUMLOCK. If a keyboard driver generates ANSI characters on the numeric keypad using ALT + numeric-pad keys, it must do this translation only if NUMLOCK is on. The cursor and editing keys on IBM-compatible keyboards do not produce this translation.
Other keys may vary from keyboard to keyboard. The following set of virtual-key codes is generally used for punctuation keys, accented letter keys, and dead keys in the main section of a keyboard:
VK_OEM_1 ... VK_OEM_8
VK_OEM_102
VK_OEM_PLUS, VK_OEM_MINUS, VK_OEM_COMMA, VK_OEM_PERIOD
If a keyboard has more than 16 function keys, the virtual-key codes in the range VK_F17 through VK_F24 should be used for the extra function keys.
Windows internally generates the mouse-button virtual-key codes VK_LBUTTON, VK_RBUTTON, VK_MBUTTON, and VK_CANCEL. These virtual-key codes are generated internally by Windows and are never generated by keyboard or mouse drivers.
Keyboard drivers should not generate VK_EXECUTE or VK_SEPARATER.
Virtual Keys for 122-Key Keyboards
For keyboards with 122 keys, the mapping for the first 101 keys is the same as described in previous sections.
The function keys F13 through F24 should use VK_F13 through VK_F24.
The remaining keys should be mapped to the following virtual-key codes:
VK_ATTN
VK_OEM_CLEAR
VK_CRSEL
VK_PA1
VK_EREOF
VK_PLAY
VK_EXSEL
VK_ZOOM
VK_NONAME
Virtual-Key Code Definitions
The following table includes the virtual-key codes that are defined for Windows. The key code values 0 and 0FFh are not used.
Virtual-key Codes
Name
Value
Comment
VK_LBUTTON
01h
Left mouse button.
VK_RBUTTON
02h
Right mouse button.
VK_CANCEL
03h
Used for control-break processing.
VK_MBUTTON
04h
Middle mouse button (3-button mouse).
05h through 07h undefined.
VK_BACK
08h
VK_TAB
09h
0Ah and 0Bh undefined.
VK_CLEAR
0Ch
VK_RETURN
0Dh
0Eh and 0Fh undefined.
VK_SHIFT
10h
VK_CONTROL
11h
VK_MENU
12h
VK_PAUSE
13h
VK_CAPITAL
14h
15h through 1Ah undefined.
VK_ESCAPE
1Bh
1Ch through 1Fh undefined.
VK_SPACE
20h
VK_PRIOR
21h
Page up.
VK_NEXT
22h
Page down.
VK_END
23h
VK_HOME
24h
VK_LEFT
25h
VK_UP
26h
VK_RIGHT
27h
VK_DOWN
28h
VK_SELECT
29h
VK_PRINT
2Ah
Only used by Nokia.
VK_EXECUTE
2Bh
Never used.
VK_SNAPSHOT
2Ch
SYSREQ key starting with Windows 3.0.
VK_INSERT
2Dh
VK_DELETE
2Eh
VK_HELP
2Fh
VK_0
30h
VK_1
31h
VK_2
32h
VK_3
33h
VK_4
34h
VK_5
35h
VK_6
36h
VK_7
37h
VK_8
38h
VK_9
39h
3Ah though 40h undefined.
VK_A
41h
VK_B
42h
VK_C
43h
VK_D
44h
VK_E
45h
VK_F
46h
VK_G
47h
VK_H
48h
VK_I
49h
VK_J
4Ah
VK_K
4Bh
VK_L
4Ch
VK_M
4Dh
VK_N
4Eh
VK_O
4Fh
VK_P
50h
VK_Q
51h
VK_R
52h
VK_S
53h
VK_T
54h
VK_U
55h
VK_V
56h
VK_W
57h
VK_X
58h
VK_Y
59h
VK_Z
5Ah
5Bh through 5Fh undefined.
VK_NUMPAD0
60h
VK_NUMPAD1
61h
VK_NUMPAD2
62h
VK_NUMPAD3
63h
VK_NUMPAD4
64h
VK_NUMPAD5
65h
VK_NUMPAD6
66h
VK_NUMPAD7
67h
VK_NUMPAD8
68h
VK_NUMPAD9
69h
VK_MULTIPLY
6Ah
VK_ADD
6Bh
VK_SEPARATER
6Ch
Never generated by keyboard driver.
VK_SUBTRACT
6Dh
VK_DECIMAL
6Eh
VK_DIVIDE
6Fh
VK_F1
70h
VK_F2
71h
VK_F3
72h
VK_F4
73h
VK_F5
74h
VK_F6
75h
VK_F7
76h
VK_F8
77h
VK_F9
78h
VK_F10
79h
VK_F11
7Ah
VK_F12
7Bh
VK_F13
7Ch
VK_F14
7Dh
VK_F15
7Eh
VK_F16
7Fh
VK_F17
80h
VK_F18
81h
VK_F19
82h
VK_F20
83h
VK_F21
84h
VK_F22
85h
VK_F23
86h
VK_F24
87h
88h through 8Fh unassigned.
VK_NUMLOCK
090h
NUMLOCK on all keyboards.
VK_OEM_SCROLL
091h
SCROLL LOCK on all keyboards.
92h through B9h unassigned.
VK_OEM_1
0BAh
Punctuation.
VK_OEM_PLUS
0BBh
Punctuation.
VK_OEM_COMMA
0BCh
Punctuation.
VK_OEM_MINUS
0BDh
Punctuation.
VK_OEM_PERIOD
0BEh
Punctuation.
VK_OEM_2
0BFh
Punctuation.
VK_OEM_3
0C0h
Punctuation.
C1h through DAh unassigned.
VK_OEM_4
0DBh
Punctuation.
VK_OEM_5
0DCh
Punctuation.
VK_OEM_6
0DDh
Punctuation.
VK_OEM_7
0DEh
Punctuation.
VK_OEM_8
0DFh
Punctuation.
VK_F17
0E0h
F17 key on Olivetti extended keyboard (internal use only).
VK_F18
0E1h
F18 key on Olivetti extended keyboard (internal use only).
VK_OEM_102
0E2h
< or | on IBM-compatible 102 enhanced keyboard (non-U.S.).
VK_ICO_HELP
0E3h
Help key on Olivetti extended keyboard (internal use only).
VK_ICO_00
0E4h
00 key on Olivetti extended keyboard (internal use only).
E5h unassigned.
VK_ICO_CLEAR
0E6h
Olivetti extended keyboard (internal use only).
E7h and E8h unassigned.
VK_OEM_RESET
0E9H
Only used by Nokia.
VK_OEM_JUMP
0EAH
Only used by Nokia.
VK_OEM_PA1
0EBH
Only used by Nokia.
VK_OEM_PA2
0ECH
Only used by Nokia.
VK_OEM_PA3
0EDH
Only used by Nokia.
VK_OEM_WSCTRL
0EEH
Only used by Nokia.
VK_OEM_CUSEL
0EFH
Only used by Nokia.
VK_OEM_ATTN
0F0H
Only used by Nokia.
VK_OEM_FINNISH
0F1H
Only used by Nokia.
VK_OEM_COPY
0F2H
Only used by Nokia.
VK_OEM_AUTO
0F3H
Only used by Nokia.
VK_OEM_ENLW
0F4h
Only used by Nokia.
VK_OEM_BACKTAB
0F5h
Only used by Nokia.
VK_ATTN
0F6H
VK_CRSEL
0F7H
VK_EXSEL
0F8H
VK_EREOF
0F9H
VK_PLAY
0FAH
VK_ZOOM
0FBH
VK_NONAME
0FCH
VK_PA1
0FDH
VK_OEM_CLEAR
0FEH |
Ух скока понаписал - надо бы в FAQ засунуть.  |
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