Example of input events

The input events combined with count procedures are very useful for counting events (for example event counting).

dwsmath-jure_sl03_exam_events-formula

The example above counts up when the right cursor key is pressed and counts down when the left cursor key is pressed.

dwsmath-jure_sl04_exam_events-signal

The Keypressed option in formula uses the virtual key codes.

Symbolic constant name Value(decimal) Mouse or keyboard equivalent
VK_LBUTTON 1 Left mouse button
VK_RBUTTON 2 Right mouse button
VK_CANCEL 3 Control-break processing
VK_MBUTTON 4 Middle mouse button (three-button mouse)
VK_XBUTTON1 5 Windows 2000: X1 mouse button
VK_XBUTTON2 6 Windows 2000: X2 mouse button
7 Undefined
VK_BACK 8 BACKSPACE key
VK_TAB 9 TAB key
10–11 Reserved
VK_CLEAR 12 CLEAR key
VK_RETURN 13 ENTER key
14–15 Undefined
VK_SHIFT 16 SHIFT key
VK_CONTROL 17 CTRL key
VK_MENU 18 ALT key
VK_PAUSE 19 PAUSE key
VK_CAPITAL 20 CAPS LOCK key
VK_KANA 21 IME Kana mode
VK_HANGUEL 21 IME Hanguel mode (maintained for compatibility; use VK_HANGUL)
VK_HANGUL 21 IME Hangul mode
22 Undefined
VK_JUNJA 23 IME Junja mode
VK_FINAL 24 IME final mode
VK_HANJA 25 IME Hanja mode
VK_KANJI 25 IME Kanji mode
26 Undefined
VK_ESCAPE 27 ESC key
VK_CONVERT 28 IME convert
VK_NONCONVERT 29 IME nonconvert
VK_ACCEPT 30 IME accept
VK_MODECHANGE 31 IME mode change request
VK_SPACE 32 SPACEBAR
VK_PRIOR 33 PAGE UP key
VK_NEXT 34 PAGE DOWN key
VK_END 35 END key
VK_HOME 36 HOME key
VK_LEFT 37 LEFT ARROW key
VK_UP 38 UP ARROW key
VK_RIGHT 39 RIGHT ARROW key
VK_DOWN 40 DOWN ARROW key
VK_SELECT 41 SELECT key
VK_PRINT 42 PRINT key
VK_EXECUTE 43 EXECUTE key
VK_SNAPSHOT 44 PRINT SCREEN key
VK_INSERT 45 INS key
VK_DELETE 46 DEL key
VK_HELP 47 HELP key
  48 0 key
  49 1 key
  50 2 key
  51 3 key
  52 4 key
  53 5 key
  54 6 key
  55 7 key
  56 8 key
  57 9 key
58–64 Undefined
  65 A key
  66 B key
  67 C key
  68 D key
  69 E key
  70 F key
  71 G key
  72 H key
  73 I key
  74 J key
  75 K key
  76 L key
  77 M key
  78 N key
  79 O key
  80 P key
  81 Q key
  82 R key
  83 S key
  84 T key
  85 U key
  86 V key
  87 W key
  88 X key
  89 Y key
  90 Z key
VK_LWIN 91 Left Windows key (Microsoft® Natural® keyboard)
VK_RWIN 92 Right Windows key (Natural keyboard)
VK_APPS 93 Applications key (Natural keyboard)
94 Reserved
VK_SLEEP 95 Computer Sleep key
VK_NUMPAD0 96 Numeric keypad 0 key
VK_NUMPAD1 97 Numeric keypad 1 key
VK_NUMPAD2 98 Numeric keypad 2 key
VK_NUMPAD3 99 Numeric keypad 3 key
VK_NUMPAD4 100 Numeric keypad 4 key
VK_NUMPAD5 101 Numeric keypad 5 key
VK_NUMPAD6 102 Numeric keypad 6 key
VK_NUMPAD7 103 Numeric keypad 7 key
VK_NUMPAD8 104 Numeric keypad 8 key
VK_NUMPAD9 105 Numeric keypad 9 key
VK_MULTIPLY 106 Multiply key
VK_ADD 107 Add key
VK_SEPARATOR 108 Separator key
VK_SUBTRACT 109 Subtract key
VK_DECIMAL 110 Decimal key
VK_DIVIDE 111 Divide key
VK_F1 112 F1 key
VK_F2 113 F2 key
VK_F3 114 F3 key
VK_F4 115 F4 key
VK_F5 116 F5 key
VK_F6 117 F6 key
VK_F7 118 F7 key
VK_F8 119 F8 key
VK_F9 120 F9 key
VK_F10 121 F10 key
VK_F11 122 F11 key
VK_F12 123 F12 key
VK_F13 124 F13 key
VK_F14 125 F14 key
VK_F15 126 F15 key
VK_F16 127 F16 key
VK_F17 128H F17 key
VK_F18 129H F18 key
VK_F19 130H F19 key
VK_F20 131H F20 key
VK_F21 132H F21 key
VK_F22 133H F22 key
VK_F23 134H F23 key
VK_F24 135H F24 key
136–143 Unassigned
VK_NUMLOCK 144 NUM LOCK key
VK_SCROLL 145 SCROLL LOCK key
  146–150 OEM specific
151–159 Unassigned
VK_LSHIFT 160 Left SHIFT key
VK_RSHIFT 161 Right SHIFT key
VK_LCONTROL 162 Left CONTROL key
VK_RCONTROL 163 Right CONTROL key
VK_LMENU 164 Left MENU key
VK_RMENU 165 Right MENU key
VK_BROWSER_BACK 166 Windows 2000: Browser Back key
VK_BROWSER_FORWARD 167 Windows 2000: Browser Forward key
VK_BROWSER_REFRESH 168 Windows 2000: Browser Refresh key
VK_BROWSER_STOP 169 Windows 2000: Browser Stop key
VK_BROWSER_SEARCH 170 Windows 2000: Browser Search key
VK_BROWSER_FAVORITES 171 Windows 2000: Browser Favorites key
VK_BROWSER_HOME 172 Windows 2000: Browser Start and Home key
VK_VOLUME_MUTE 173 Windows 2000: Volume Mute key
VK_VOLUME_DOWN 174 Windows 2000: Volume Down key
VK_VOLUME_UP 175 Windows 2000: Volume Up key
VK_MEDIA_NEXT_TRACK 176 Windows 2000: Next Track key
VK_MEDIA_PREV_TRACK 177 Windows 2000: Previous Track key
VK_MEDIA_STOP 178 Windows 2000: Stop Media key
VK_MEDIA_PLAY_PAUSE 179 Windows 2000: Play/Pause Media key
VK_LAUNCH_MAIL 180 Windows 2000: Start Mail key
VK_LAUNCH_MEDIA_SELECT 181 Windows 2000: Select Media key
VK_LAUNCH_APP1 182 Windows 2000: Start Application 1 key
VK_LAUNCH_APP2 183 Windows 2000: Start Application 2 key
184-185 Reserved
VK_OEM_1 186 Windows 2000: For the US standard keyboard, the ‘;:’ key
VK_OEM_PLUS 187 Windows 2000: For any country/region, the ‘+’ key
VK_OEM_COMMA 188 Windows 2000: For any country/region, the ‘,’ key
VK_OEM_MINUS 189 Windows 2000: For any country/region, the ‘-’ key
VK_OEM_PERIOD 190 Windows 2000: For any country/region, the ‘.’ key
VK_OEM_2 191 Windows 2000: For the US standard keyboard, the ‘/?’ key
VK_OEM_3 192 Windows 2000: For the US standard keyboard, the ‘`~’ key
193–215 Reserved
216–218 Unassigned
VK_OEM_4 219 Windows 2000: For the US standard keyboard, the ‘[{’ key
VK_OEM_5 220 Windows 2000: For the US standard keyboard\, the ‘\|’ key
VK_OEM_6 221 Windows 2000: For the US standard keyboard, the ‘]}’ key
VK_OEM_7 222 Windows 2000: For the US standard keyboard, the ‘single-quote/double-quote’ key
VK_OEM_8 223
224 Reserved
  225 OEM specific
VK_OEM_102 226 Windows 2000: Either the angle bracket key or the backslash key on the RT 102-key keyboard
  227–228 OEM specific
VK_PROCESSKEY 229 Windows 95/98, Windows NT 4.0, Windows 2000: IME PROCESS key
  230 OEM specific
VK_PACKET 231 Windows 2000: 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
232 Unassigned
  233–245 OEM specific
VK_ATTN 246 Attn key
VK_CRSEL 247 CrSel key
VK_EXSEL 248 ExSel key
VK_EREOF 249 Erase EOF key
VK_PLAY 250 Play key
VK_ZOOM 251 Zoom key
VK_NONAME 252 Reserved for future use
VK_PA1 253 PA1 key
VK_OEM_CLEAR 254 Clear key