Do you mean dbKeyState()? There is a huge list of them pre-defined for you if you include the "dinput.h" header at the top of your program.
The 'W' key will then be "DIK_W" (without quotes) and the space bar will be "DIK_SPACE" or something like that (also without quotes).
if(dbKeyState(DIK_SPACE) == 1)
If you can't guess one of the keys, here is the list out of "dinput.h":
/****************************************************************************
*
* DirectInput keyboard scan codes
*
****************************************************************************/
#define DIK_ESCAPE 0x01
#define DIK_1 0x02
#define DIK_2 0x03
#define DIK_3 0x04
#define DIK_4 0x05
#define DIK_5 0x06
#define DIK_6 0x07
#define DIK_7 0x08
#define DIK_8 0x09
#define DIK_9 0x0A
#define DIK_0 0x0B
#define DIK_MINUS 0x0C /* - on main keyboard */
#define DIK_EQUALS 0x0D
#define DIK_BACK 0x0E /* backspace */
#define DIK_TAB 0x0F
#define DIK_Q 0x10
#define DIK_W 0x11
#define DIK_E 0x12
#define DIK_R 0x13
#define DIK_T 0x14
#define DIK_Y 0x15
#define DIK_U 0x16
#define DIK_I 0x17
#define DIK_O 0x18
#define DIK_P 0x19
#define DIK_LBRACKET 0x1A
#define DIK_RBRACKET 0x1B
#define DIK_RETURN 0x1C /* Enter on main keyboard */
#define DIK_LCONTROL 0x1D
#define DIK_A 0x1E
#define DIK_S 0x1F
#define DIK_D 0x20
#define DIK_F 0x21
#define DIK_G 0x22
#define DIK_H 0x23
#define DIK_J 0x24
#define DIK_K 0x25
#define DIK_L 0x26
#define DIK_SEMICOLON 0x27
#define DIK_APOSTROPHE 0x28
#define DIK_GRAVE 0x29 /* accent grave */
#define DIK_LSHIFT 0x2A
#define DIK_BACKSLASH 0x2B
#define DIK_Z 0x2C
#define DIK_X 0x2D
#define DIK_C 0x2E
#define DIK_V 0x2F
#define DIK_B 0x30
#define DIK_N 0x31
#define DIK_M 0x32
#define DIK_COMMA 0x33
#define DIK_PERIOD 0x34 /* . on main keyboard */
#define DIK_SLASH 0x35 /* / on main keyboard */
#define DIK_RSHIFT 0x36
#define DIK_MULTIPLY 0x37 /* * on numeric keypad */
#define DIK_LMENU 0x38 /* left Alt */
#define DIK_SPACE 0x39
#define DIK_CAPITAL 0x3A
#define DIK_F1 0x3B
#define DIK_F2 0x3C
#define DIK_F3 0x3D
#define DIK_F4 0x3E
#define DIK_F5 0x3F
#define DIK_F6 0x40
#define DIK_F7 0x41
#define DIK_F8 0x42
#define DIK_F9 0x43
#define DIK_F10 0x44
#define DIK_NUMLOCK 0x45
#define DIK_SCROLL 0x46 /* Scroll Lock */
#define DIK_NUMPAD7 0x47
#define DIK_NUMPAD8 0x48
#define DIK_NUMPAD9 0x49
#define DIK_SUBTRACT 0x4A /* - on numeric keypad */
#define DIK_NUMPAD4 0x4B
#define DIK_NUMPAD5 0x4C
#define DIK_NUMPAD6 0x4D
#define DIK_ADD 0x4E /* + on numeric keypad */
#define DIK_NUMPAD1 0x4F
#define DIK_NUMPAD2 0x50
#define DIK_NUMPAD3 0x51
#define DIK_NUMPAD0 0x52
#define DIK_DECIMAL 0x53 /* . on numeric keypad */
#define DIK_OEM_102 0x56 /* <> or \| on RT 102-key keyboard (Non-U.S.) */
#define DIK_F11 0x57
#define DIK_F12 0x58
#define DIK_F13 0x64 /* (NEC PC98) */
#define DIK_F14 0x65 /* (NEC PC98) */
#define DIK_F15 0x66 /* (NEC PC98) */
#define DIK_KANA 0x70 /* (Japanese keyboard) */
#define DIK_ABNT_C1 0x73 /* /? on Brazilian keyboard */
#define DIK_CONVERT 0x79 /* (Japanese keyboard) */
#define DIK_NOCONVERT 0x7B /* (Japanese keyboard) */
#define DIK_YEN 0x7D /* (Japanese keyboard) */
#define DIK_ABNT_C2 0x7E /* Numpad . on Brazilian keyboard */
#define DIK_NUMPADEQUALS 0x8D /* = on numeric keypad (NEC PC98) */
#define DIK_PREVTRACK 0x90 /* Previous Track (DIK_CIRCUMFLEX on Japanese keyboard) */
#define DIK_AT 0x91 /* (NEC PC98) */
#define DIK_COLON 0x92 /* (NEC PC98) */
#define DIK_UNDERLINE 0x93 /* (NEC PC98) */
#define DIK_KANJI 0x94 /* (Japanese keyboard) */
#define DIK_STOP 0x95 /* (NEC PC98) */
#define DIK_AX 0x96 /* (Japan AX) */
#define DIK_UNLABELED 0x97 /* (J3100) */
#define DIK_NEXTTRACK 0x99 /* Next Track */
#define DIK_NUMPADENTER 0x9C /* Enter on numeric keypad */
#define DIK_RCONTROL 0x9D
#define DIK_MUTE 0xA0 /* Mute */
#define DIK_CALCULATOR 0xA1 /* Calculator */
#define DIK_PLAYPAUSE 0xA2 /* Play / Pause */
#define DIK_MEDIASTOP 0xA4 /* Media Stop */
#define DIK_VOLUMEDOWN 0xAE /* Volume - */
#define DIK_VOLUMEUP 0xB0 /* Volume + */
#define DIK_WEBHOME 0xB2 /* Web home */
#define DIK_NUMPADCOMMA 0xB3 /* , on numeric keypad (NEC PC98) */
#define DIK_DIVIDE 0xB5 /* / on numeric keypad */
#define DIK_SYSRQ 0xB7
#define DIK_RMENU 0xB8 /* right Alt */
#define DIK_PAUSE 0xC5 /* Pause */
#define DIK_HOME 0xC7 /* Home on arrow keypad */
#define DIK_UP 0xC8 /* UpArrow on arrow keypad */
#define DIK_PRIOR 0xC9 /* PgUp on arrow keypad */
#define DIK_LEFT 0xCB /* LeftArrow on arrow keypad */
#define DIK_RIGHT 0xCD /* RightArrow on arrow keypad */
#define DIK_END 0xCF /* End on arrow keypad */
#define DIK_DOWN 0xD0 /* DownArrow on arrow keypad */
#define DIK_NEXT 0xD1 /* PgDn on arrow keypad */
#define DIK_INSERT 0xD2 /* Insert on arrow keypad */
#define DIK_DELETE 0xD3 /* Delete on arrow keypad */
#define DIK_LWIN 0xDB /* Left Windows key */
#define DIK_RWIN 0xDC /* Right Windows key */
#define DIK_APPS 0xDD /* AppMenu key */
#define DIK_POWER 0xDE /* System Power */
#define DIK_SLEEP 0xDF /* System Sleep */
#define DIK_WAKE 0xE3 /* System Wake */
#define DIK_WEBSEARCH 0xE5 /* Web Search */
#define DIK_WEBFAVORITES 0xE6 /* Web Favorites */
#define DIK_WEBREFRESH 0xE7 /* Web Refresh */
#define DIK_WEBSTOP 0xE8 /* Web Stop */
#define DIK_WEBFORWARD 0xE9 /* Web Forward */
#define DIK_WEBBACK 0xEA /* Web Back */
#define DIK_MYCOMPUTER 0xEB /* My Computer */
#define DIK_MAIL 0xEC /* Mail */
#define DIK_MEDIASELECT 0xED /* Media Select */
/*
* Alternate names for keys, to facilitate transition from DOS.
*/
#define DIK_BACKSPACE DIK_BACK /* backspace */
#define DIK_NUMPADSTAR DIK_MULTIPLY /* * on numeric keypad */
#define DIK_LALT DIK_LMENU /* left Alt */
#define DIK_CAPSLOCK DIK_CAPITAL /* CapsLock */
#define DIK_NUMPADMINUS DIK_SUBTRACT /* - on numeric keypad */
#define DIK_NUMPADPLUS DIK_ADD /* + on numeric keypad */
#define DIK_NUMPADPERIOD DIK_DECIMAL /* . on numeric keypad */
#define DIK_NUMPADSLASH DIK_DIVIDE /* / on numeric keypad */
#define DIK_RALT DIK_RMENU /* right Alt */
#define DIK_UPARROW DIK_UP /* UpArrow on arrow keypad */
#define DIK_PGUP DIK_PRIOR /* PgUp on arrow keypad */
#define DIK_LEFTARROW DIK_LEFT /* LeftArrow on arrow keypad */
#define DIK_RIGHTARROW DIK_RIGHT /* RightArrow on arrow keypad */
#define DIK_DOWNARROW DIK_DOWN /* DownArrow on arrow keypad */
#define DIK_PGDN DIK_NEXT /* PgDn on arrow keypad */
/*
* Alternate names for keys originally not used on US keyboards.
*/
#define DIK_CIRCUMFLEX DIK_PREVTRACK /* Japanese keyboard */
Your_Health = (My_Mood == HAPPY) ? 100 : NULL;