Vb keyboard events explanation-CodePudding

Don't know this keyboard events, and explanation

CodePudding user response:

Which is the keyboard events, please?

CodePudding user response:

KeyPress event: the event when the user presses and an ANSI release button,
KeyDown event has occurred: when an object has the focus by pressing (KeyDown) occurs when a key
KeyUp event: when an object has the focus (KeyUp) a release button

CodePudding user response:

refer to the second floor response: VB amateurs

KeyPress event: the event when the user presses and an ANSI release button,
KeyDown event has occurred: when an object has the focus by pressing (KeyDown) occurs when a key
KeyUp event: when an object has the focus to loosen (KeyUp) occurs when a key

Keydown inside the shift parameters

CodePudding user response:

Shift parameters used to represent events occur, shift, CTRL, Alt three key state

Constant value description
VbShiftMask 1 SHIFT key bit mask,
VbCtrlMask 2 CTRL key bit mask,
VbAltMask 4 the ALT key bit mask,

In this directly see the VB description, also can search the Internet to find

CodePudding user response:

The MSDN Library:
Shift parameter is when the incident response shift, CTRL and ALT key state of an integer,
Shift parameter is a domain, it USES the least bit response shift key (0), CTRL key (1) and (2) the ALT key, these correspond to the value of 1, 2 and 4, can be based on some, all or nothing Settings to point to have some, all or zero key is pressed,

Which means that when you press the other keys, have at the same time press the SHIFT, CTRL and ALT keys
Shift=1 said the shift key was pressed
Shift=2 indicates that the CTRL key is press the
Shift=4 indicates that the ALT key is press the

Shift=3 means the shift key and the CTRL key and press the
Shift=5 said the shift key and the ALT key and press the
Shift=6 said CTRL and ALT keys and press the
Shift=7, said the shift key, CTRL and ALT keys and press the

CodePudding user response:

refer to fifth floor response: VB amateurs

MSDN Library:
Shift parameter is when the incident response shift, CTRL and ALT key state of an integer,
Shift parameter is a domain, it USES the least bit response shift key (0), CTRL key (1) and (2) the ALT key, these correspond to the value of 1, 2 and 4, can be based on some, all or nothing Settings to point to have some, all or zero key is pressed,

Which means that when you press the other keys, have at the same time press the SHIFT, CTRL and ALT keys
Shift=1 said the shift key was pressed
Shift=2 indicates that the CTRL key is press the
Shift=4 indicates that the ALT key is press the

Shift=3 means the shift key and the CTRL key and press the
Shift=5 said the shift key and the ALT key and press the
Shift=6 said CTRL and ALT keys and press the
Shift=7, said the shift key, CTRL and ALT keys and press the

Ok, what about keycode

CodePudding user response:

Suggest that the original poster Ann a MSDN, these can check on their own things, do not have to ask here,

Keycode constant

Can be anywhere in the code with the following instead of the actual value of constant:

Constant value description
VbKeyLButton 0 x1 of mouse
VbKeyRButton 0 x2 the right-click
VbKeyCancel 0 x3 CANCEL button
VbKeyMButton 0 x4 middle mouse button
VbKeyBack 0 by 8 BACKSPACE key
VbKeyTab 0 x9 TAB
VbKeyClear 0 xc CLEAR key
VbKeyReturn 0 xd ENTER
VbKeyShift 0 x10 SHIFT key
VbKeyControl 0 x11 CTRL key
VbKeyMenu 0 x12 MENU button
VbKeyPause 0 x13 PAUSE key
VbKeyCapital 0 x14 CAPSLOCK key
VbKeyEscape 0 x1b ESC
VbKeySpace 0 x20 SPACEBAR key
VbKeyPageUp 0 x21 PAGEUP key
VbKeyPageDown 0 x22 PAGEDOWN key
VbKeyEnd 0 x23 END keys
VbKeyHome 0 x24 HOME button
VbKeyLeft 0 x25 LEFTARROW keys
VbKeyUp 0 x26 UPARROW keys
VbKeyRight 0 x27 RIGHTARROW keys
VbKeyDown 0 x28 DOWNARROW keys
X29 vbKeySelect 0 SELECT key
VbKeyPrint 0 x2a PRINTSCREEN key
VbKeyExecute 0 x2b EXECUTE key
VbKeySnapshot 0 x2c SNAPSHOT button
VbKeyInsert 0 x2d INSERT key
VbKeyDelete 0 x2e DELETE key
VbKeyHelp 0 x2f HELP key
VbKeyNumlock 0 x90 NUMLOCK key

A to Z key and A - Z letter ASCII:

Constant value description
VbKeyA 65 A key
VbKeyB 66 B keys
VbKeyC 67 C key
VbKeyD 68 D keys
VbKeyE 69 E key
VbKeyF 70 F key
VbKeyG 71 G
VbKeyH 72 H key
73 I key vbKeyI
74 J vbKeyJ
VbKeyK 75 K key
VbKeyL 76 L keys
VbKeyM 77 M
VbKeyN 78 N key
VbKeyO 79 O key
Key vbKeyP 80 P
VbKeyQ 81 Q keys
VbKeyR 82 R
VbKeyS 83 S
VbKeyT 84 T
VbKeyU 85 U key
VbKeyV 86 V
VbKeyW 87 W keys
VbKeyX 88 X key
VbKeyY 89 Y
VbKeyZ 90 Z key

0 to 9 key is the same as the Numbers 0-9 ASCII:

Constant value description
VbKey0 48 0 keys
VbKey1 49 1
VbKey2 50 2 keys
VbKey3 51 3 keys
VbKey4 52 4 keys
VbKey5 53 5 keys
VbKey6 54 6 key
VbKey7 55 7 keys
VbKey8 56 8 key
VbKey9 57 9 key

Constant of the following represent Numbers on the keyboard button:

Constant value description
VbKeyNumpad0 0 x60 0 keys
X61 vbKeyNumpad1 0 1
VbKeyNumpad2 0 x62 2 keys
VbKeyNumpad3 0 x63 3 keys
VbKeyNumpad4 0 x64 4 keys
VbKeyNumpad5 0 x65 5 keys
VbKeyNumpad6 0 x66 6 key
VbKeyNumpad7 0 x67 7 keys
VbKeyNumpad8 x68 8 0 keys
VbKeyNumpad9 0 x69 9 key
VbKeyMultiply 0 x6a MULTIPLICATION SIGN (*) keys
VbKeyAdd 0 x6b PLUS SIGN (+) key
VbKeySeparator 0 x6c ENTER
VbKeySubtract 0 x6d MINUS SIGN (-) keys
VbKeyDecimal 0 x6e DECIMAL POINT (.) key
VbKeyDivide 0 x6f DIVISION SIGN (/) key

On behalf of the following constant function keys:

Constant value description
VbKeyF1 0 x70 F1 key
VbKeyF2 0 x71 F2
VbKeyF3 0 x72 F3 key
VbKeyF4 0 x73 F4 keys
VbKeyF5 0 x74 F5
VbKeyF6 0 x75 F6 key
VbKeyF7 0 x76 F7 key
VbKeyF8 0 x77 F8 key
VbKeyF9 0 x78 F9 key
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