Listing 10. Determining a Device<\#146>s Global Key and Button State /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #include #include #include #include #include /* this macro is used to tell if "bit" is set in "array" * it selects a byte from the array, and does a boolean AND * operation with a byte that only has the relevant bit set. * eg. to check for the 12th bit, we do (array[1] & 1<<4) */ #define test_bit(bit, array) (array[bit/8] & (1<<(bit%8))) int main (int argc, char **argv) { int fd = -1; uint8_t key_bitmask[KEY_MAX/8 + 1]; int yalv; /* ioctl() requires a file descriptor, so we check we got one, and then open it */ if (argc != 2) { fprintf(stderr, "usage: %s event-device - probably /dev/input/event0\n", argv[0]); exit(1); } if ((fd = open(argv[1], O_RDONLY)) < 0) { perror("evdev open"); exit(1); } memset(key_bitmask, 0, sizeof(key_bitmask)); if (ioctl(fd, EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) < 0) { perror("evdev ioctl"); } for (yalv = 0; yalv < KEY_MAX; yalv++) { if (test_bit(yalv, key_bitmask)) { /* this means that the bit is set in the key state */ printf(" Key 0x%02x ", yalv); switch ( yalv) { case KEY_RESERVED : printf(" (Reserved)\n"); break; case KEY_ESC : printf(" (Escape)\n"); break; case KEY_1 : printf(" (1)\n"); break; case KEY_2 : printf(" (2)\n"); break; case KEY_3 : printf(" (3)\n"); break; case KEY_4 : printf(" (4)\n"); break; case KEY_5 : printf(" (5)\n"); break; case KEY_6 : printf(" (6)\n"); break; case KEY_7 : printf(" (7)\n"); break; case KEY_8 : printf(" (8)\n"); break; case KEY_9 : printf(" ()\n"); break; case KEY_0 : printf(" ()\n"); break; case KEY_MINUS : printf(" (-)\n"); break; case KEY_EQUAL : printf(" (=)\n"); break; case KEY_BACKSPACE : printf(" (Backspace)\n"); break; case KEY_TAB : printf(" (Tab)\n"); break; case KEY_Q : printf(" (Q)\n"); break; case KEY_W : printf(" (W)\n"); break; case KEY_E : printf(" (E)\n"); break; case KEY_R : printf(" (R)\n"); break; case KEY_T : printf(" (T)\n"); break; case KEY_Y : printf(" (Y)\n"); break; case KEY_U : printf(" (U)\n"); break; case KEY_I : printf(" (I)\n"); break; case KEY_O : printf(" (O)\n"); break; case KEY_P : printf(" (P)\n"); break; case KEY_LEFTBRACE : printf(" ([)\n"); break; case KEY_RIGHTBRACE : printf(" (])\n"); break; case KEY_ENTER : printf(" (Enter)\n"); break; case KEY_LEFTCTRL : printf(" (LH Control)\n"); break; case KEY_A : printf(" (A)\n"); break; case KEY_S : printf(" (S)\n"); break; case KEY_D : printf(" (D)\n"); break; case KEY_F : printf(" (F)\n"); break; case KEY_G : printf(" (G)\n"); break; case KEY_H : printf(" (H)\n"); break; case KEY_J : printf(" (J)\n"); break; case KEY_K : printf(" (K)\n"); break; case KEY_L : printf(" (L)\n"); break; case KEY_SEMICOLON : printf(" (;)\n"); break; case KEY_APOSTROPHE : printf(" (')\n"); break; case KEY_GRAVE : printf(" (`)\n"); break; case KEY_LEFTSHIFT : printf(" (LH Shift)\n"); break; case KEY_BACKSLASH : printf(" (\\)\n"); break; case KEY_Z : printf(" (Z)\n"); break; case KEY_X : printf(" (X)\n"); break; case KEY_C : printf(" (C)\n"); break; case KEY_V : printf(" (V)\n"); break; case KEY_B : printf(" (B)\n"); break; case KEY_N : printf(" (N)\n"); break; case KEY_M : printf(" (M)\n"); break; case KEY_COMMA : printf(" (,)\n"); break; case KEY_DOT : printf(" (.)\n"); break; case KEY_SLASH : printf(" (/)\n"); break; case KEY_RIGHTSHIFT : printf(" (RH Shift)\n"); break; case KEY_KPASTERISK : printf(" (*)\n"); break; case KEY_LEFTALT : printf(" (LH Alt)\n"); break; case KEY_SPACE : printf(" (Space)\n"); break; case KEY_CAPSLOCK : printf(" (CapsLock)\n"); break; case KEY_F1 : printf(" (F1)\n"); break; case KEY_F2 : printf(" (F2)\n"); break; case KEY_F3 : printf(" (F3)\n"); break; case KEY_F4 : printf(" (F4)\n"); break; case KEY_F5 : printf(" (F5)\n"); break; case KEY_F6 : printf(" (F6)\n"); break; case KEY_F7 : printf(" (F7)\n"); break; case KEY_F8 : printf(" (F8)\n"); break; case KEY_F9 : printf(" (F9)\n"); break; case KEY_F10 : printf(" (F10)\n"); break; case KEY_NUMLOCK : printf(" (NumLock)\n"); break; case KEY_SCROLLLOCK : printf(" (ScrollLock)\n"); break; case KEY_KP7 : printf(" (KeyPad 7)\n"); break; case KEY_KP8 : printf(" (KeyPad 8)\n"); break; case KEY_KP9 : printf(" (Keypad 9)\n"); break; case KEY_KPMINUS : printf(" (KeyPad Minus)\n"); break; case KEY_KP4 : printf(" (KeyPad 4)\n"); break; case KEY_KP5 : printf(" (KeyPad 5)\n"); break; case KEY_KP6 : printf(" (KeyPad 6)\n"); break; case KEY_KPPLUS : printf(" (KeyPad Plus)\n"); break; case KEY_KP1 : printf(" (KeyPad 1)\n"); break; case KEY_KP2 : printf(" (KeyPad 2)\n"); break; case KEY_KP3 : printf(" (KeyPad 3)\n"); break; case KEY_KPDOT : printf(" (KeyPad decimal point)\n"); break; case KEY_103RD : printf(" (Huh?)\n"); break; case KEY_F13 : printf(" (F13)\n"); break; case KEY_102ND : printf(" (Beats me...)\n"); break; case KEY_F11 : printf(" (F11)\n"); break; case KEY_F12 : printf(" (F12)\n"); break; case KEY_F14 : printf(" (F14)\n"); break; case KEY_F15 : printf(" (F15)\n"); break; case KEY_F16 : printf(" (F16)\n"); break; case KEY_F17 : printf(" (F17)\n"); break; case KEY_F18 : printf(" (F18)\n"); break; case KEY_F19 : printf(" (F19)\n"); break; case KEY_F20 : printf(" (F20)\n"); break; case KEY_KPENTER : printf(" (Keypad Enter)\n"); break; case KEY_RIGHTCTRL : printf(" (RH Control)\n"); break; case KEY_KPSLASH : printf(" (KeyPad Forward Slash)\n"); break; case KEY_SYSRQ : printf(" (System Request)\n"); break; case KEY_RIGHTALT : printf(" (RH Alternate)\n"); break; case KEY_LINEFEED : printf(" (Line Feed)\n"); break; case KEY_HOME : printf(" (Home)\n"); break; case KEY_UP : printf(" (Up)\n"); break; case KEY_PAGEUP : printf(" (Page Up)\n"); break; case KEY_LEFT : printf(" (Left)\n"); break; case KEY_RIGHT : printf(" (Right)\n"); break; case KEY_END : printf(" (End)\n"); break; case KEY_DOWN : printf(" (Down)\n"); break; case KEY_PAGEDOWN : printf(" (Page Down)\n"); break; case KEY_INSERT : printf(" (Insert)\n"); break; case KEY_DELETE : printf(" (Delete)\n"); break; case KEY_MACRO : printf(" (Macro)\n"); break; case KEY_MUTE : printf(" (Mute)\n"); break; case KEY_VOLUMEDOWN : printf(" (Volume Down)\n"); break; case KEY_VOLUMEUP : printf(" (Volume Up)\n"); break; case KEY_POWER : printf(" (Power)\n"); break; case KEY_KPEQUAL : printf(" (KeyPad Equal)\n"); break; case KEY_KPPLUSMINUS : printf(" (KeyPad +/-)\n"); break; case KEY_PAUSE : printf(" (Pause)\n"); break; case KEY_F21 : printf(" (F21)\n"); break; case KEY_F22 : printf(" (F22)\n"); break; case KEY_F23 : printf(" (F23)\n"); break; case KEY_F24 : printf(" (F24)\n"); break; case KEY_KPCOMMA : printf(" (KeyPad comma)\n"); break; case KEY_LEFTMETA : printf(" (LH Meta)\n"); break; case KEY_RIGHTMETA : printf(" (RH Meta)\n"); break; case KEY_COMPOSE : printf(" (Compose)\n"); break; case KEY_STOP : printf(" (Stop)\n"); break; case KEY_AGAIN : printf(" (Again)\n"); break; case KEY_PROPS : printf(" (Properties)\n"); break; case KEY_UNDO : printf(" (Undo)\n"); break; case KEY_FRONT : printf(" (Front)\n"); break; case KEY_COPY : printf(" (Copy)\n"); break; case KEY_OPEN : printf(" (Open)\n"); break; case KEY_PASTE : printf(" (Paste)\n"); break; case KEY_FIND : printf(" (Find)\n"); break; case KEY_CUT : printf(" (Cut)\n"); break; case KEY_HELP : printf(" (Help)\n"); break; case KEY_MENU : printf(" (Menu)\n"); break; case KEY_CALC : printf(" (Calculator)\n"); break; case KEY_SETUP : printf(" (Setup)\n"); break; case KEY_SLEEP : printf(" (Sleep)\n"); break; case KEY_WAKEUP : printf(" (Wakeup)\n"); break; case KEY_FILE : printf(" (File)\n"); break; case KEY_SENDFILE : printf(" (Send File)\n"); break; case KEY_DELETEFILE : printf(" (Delete File)\n"); break; case KEY_XFER : printf(" (Transfer)\n"); break; case KEY_PROG1 : printf(" (Program 1)\n"); break; case KEY_PROG2 : printf(" (Program 2)\n"); break; case KEY_WWW : printf(" (Web Browser)\n"); break; case KEY_MSDOS : printf(" (DOS mode)\n"); break; case KEY_COFFEE : printf(" (Coffee)\n"); break; case KEY_DIRECTION : printf(" (Direction)\n"); break; case KEY_CYCLEWINDOWS : printf(" (Window cycle)\n"); break; case KEY_MAIL : printf(" (Mail)\n"); break; case KEY_BOOKMARKS : printf(" (Book Marks)\n"); break; case KEY_COMPUTER : printf(" (Computer)\n"); break; case KEY_BACK : printf(" (Back)\n"); break; case KEY_FORWARD : printf(" (Forward)\n"); break; case KEY_CLOSECD : printf(" (Close CD)\n"); break; case KEY_EJECTCD : printf(" (Eject CD)\n"); break; case KEY_EJECTCLOSECD : printf(" (Eject / Close CD)\n"); break; case KEY_NEXTSONG : printf(" (Next Song)\n"); break; case KEY_PLAYPAUSE : printf(" (Play and Pause)\n"); break; case KEY_PREVIOUSSONG : printf(" (Previous Song)\n"); break; case KEY_STOPCD : printf(" (Stop CD)\n"); break; case KEY_RECORD : printf(" (Record)\n"); break; case KEY_REWIND : printf(" (Rewind)\n"); break; case KEY_PHONE : printf(" (Phone)\n"); break; case KEY_ISO : printf(" (ISO)\n"); break; case KEY_CONFIG : printf(" (Config)\n"); break; case KEY_HOMEPAGE : printf(" (Home)\n"); break; case KEY_REFRESH : printf(" (Refresh)\n"); break; case KEY_EXIT : printf(" (Exit)\n"); break; case KEY_MOVE : printf(" (Move)\n"); break; case KEY_EDIT : printf(" (Edit)\n"); break; case KEY_SCROLLUP : printf(" (Scroll Up)\n"); break; case KEY_SCROLLDOWN : printf(" (Scroll Down)\n"); break; case KEY_KPLEFTPAREN : printf(" (KeyPad LH parenthesis)\n"); break; case KEY_KPRIGHTPAREN : printf(" (KeyPad RH parenthesis)\n"); break; case KEY_INTL1 : printf(" (Intl 1)\n"); break; case KEY_INTL2 : printf(" (Intl 2)\n"); break; case KEY_INTL3 : printf(" (Intl 3)\n"); break; case KEY_INTL4 : printf(" (Intl 4)\n"); break; case KEY_INTL5 : printf(" (Intl 5)\n"); break; case KEY_INTL6 : printf(" (Intl 6)\n"); break; case KEY_INTL7 : printf(" (Intl 7)\n"); break; case KEY_INTL8 : printf(" (Intl 8)\n"); break; case KEY_INTL9 : printf(" (Intl 9)\n"); break; case KEY_LANG1 : printf(" (Language 1)\n"); break; case KEY_LANG2 : printf(" (Language 2)\n"); break; case KEY_LANG3 : printf(" (Language 3)\n"); break; case KEY_LANG4 : printf(" (Language 4)\n"); break; case KEY_LANG5 : printf(" (Language 5)\n"); break; case KEY_LANG6 : printf(" (Language 6)\n"); break; case KEY_LANG7 : printf(" (Language 7)\n"); break; case KEY_LANG8 : printf(" (Language 8)\n"); break; case KEY_LANG9 : printf(" (Language 9)\n"); break; case KEY_PLAYCD : printf(" (Play CD)\n"); break; case KEY_PAUSECD : printf(" (Pause CD)\n"); break; case KEY_PROG3 : printf(" (Program 3)\n"); break; case KEY_PROG4 : printf(" (Program 4)\n"); break; case KEY_SUSPEND : printf(" (Suspend)\n"); break; case KEY_CLOSE : printf(" (Close)\n"); break; case KEY_UNKNOWN : printf(" (Specifically unknown)\n"); break; case KEY_BRIGHTNESSDOWN : printf(" (Brightness Down)\n"); break; case KEY_BRIGHTNESSUP : printf(" (Brightness Up)\n"); break; case BTN_0 : printf(" (Button 0)\n"); break; case BTN_1 : printf(" (Button 1)\n"); break; case BTN_2 : printf(" (Button 2)\n"); break; case BTN_3 : printf(" (Button 3)\n"); break; case BTN_4 : printf(" (Button 4)\n"); break; case BTN_5 : printf(" (Button 5)\n"); break; case BTN_6 : printf(" (Button 6)\n"); break; case BTN_7 : printf(" (Button 7)\n"); break; case BTN_8 : printf(" (Button 8)\n"); break; case BTN_9 : printf(" (Button 9)\n"); break; case BTN_LEFT : printf(" (Left Button)\n"); break; case BTN_RIGHT : printf(" (Right Button)\n"); break; case BTN_MIDDLE : printf(" (Middle Button)\n"); break; case BTN_SIDE : printf(" (Side Button)\n"); break; case BTN_EXTRA : printf(" (Extra Button)\n"); break; case BTN_FORWARD : printf(" (Forward Button)\n"); break; case BTN_BACK : printf(" (Back Button)\n"); break; case BTN_TRIGGER : printf(" (Trigger Button)\n"); break; case BTN_THUMB : printf(" (Thumb Button)\n"); break; case BTN_THUMB2 : printf(" (Second Thumb Button)\n"); break; case BTN_TOP : printf(" (Top Button)\n"); break; case BTN_TOP2 : printf(" (Second Top Button)\n"); break; case BTN_PINKIE : printf(" (Pinkie Button)\n"); break; case BTN_BASE : printf(" (Base Button)\n"); break; case BTN_BASE2 : printf(" (Second Base Button)\n"); break; case BTN_BASE3 : printf(" (Third Base Button)\n"); break; case BTN_BASE4 : printf(" (Fourth Base Button)\n"); break; case BTN_BASE5 : printf(" (Fifth Base Button)\n"); break; case BTN_BASE6 : printf(" (Sixth Base Button)\n"); break; case BTN_DEAD : printf(" (Dead Button)\n"); break; case BTN_A : printf(" (Button A)\n"); break; case BTN_B : printf(" (Button B)\n"); break; case BTN_C : printf(" (Button C)\n"); break; case BTN_X : printf(" (Button X)\n"); break; case BTN_Y : printf(" (Button Y)\n"); break; case BTN_Z : printf(" (Button Z)\n"); break; case BTN_TL : printf(" (Thumb Left Button)\n"); break; case BTN_TR : printf(" (Thumb Right Button )\n"); break; case BTN_TL2 : printf(" (Second Thumb Left Button)\n"); break; case BTN_TR2 : printf(" (Second Thumb Right Button )\n"); break; case BTN_SELECT : printf(" (Select Button)\n"); break; case BTN_MODE : printf(" (Mode Button)\n"); break; case BTN_THUMBL : printf(" (Another Left Thumb Button )\n"); break; case BTN_THUMBR : printf(" (Another Right Thumb Button )\n"); break; case BTN_TOOL_PEN : printf(" (Digitiser Pen Tool)\n"); break; case BTN_TOOL_RUBBER : printf(" (Digitiser Rubber Tool)\n"); break; case BTN_TOOL_BRUSH : printf(" (Digitiser Brush Tool)\n"); break; case BTN_TOOL_PENCIL : printf(" (Digitiser Pencil Tool)\n"); break; case BTN_TOOL_AIRBRUSH : printf(" (Digitiser Airbrush Tool)\n"); break; case BTN_TOOL_FINGER : printf(" (Digitiser Finger Tool)\n"); break; case BTN_TOOL_MOUSE : printf(" (Digitiser Mouse Tool)\n"); break; case BTN_TOOL_LENS : printf(" (Digitiser Lens Tool)\n"); break; case BTN_TOUCH : printf(" (Digitiser Touch Button )\n"); break; case BTN_STYLUS : printf(" (Digitiser Stylus Button )\n"); break; case BTN_STYLUS2 : printf(" (Second Digitiser Stylus Button )\n"); break; default: printf(" (Unknown key)\n"); } } } close(fd); exit(0); }