git.oblomov.eu Git - wine/blob - windows/keyboard.c

   1 /*
   2  * Keyboard related functions
   3  *
   4  * Copyright 1993 Bob Amstadt
   5  */
   6 #include <string.h>
   7 #include "win.h"
   8 #include "windows.h"
   9
  10 extern BOOL MouseButtonsStates[3];
  11 extern BOOL AsyncMouseButtonsStates[3];
  12 extern BYTE KeyStateTable[256];
  13 extern BYTE AsyncKeyStateTable[256];
  14
  15 /**********************************************************************
  16  *              GetKeyState                     [USER.106]
  17  */
  18 int GetKeyState(int keycode)
  19 {
  20         switch(keycode) {
  21                 case VK_LBUTTON:
  22                     return MouseButtonsStates[0];
  23                 case VK_MBUTTON:
  24                     return MouseButtonsStates[1];
  25                 case VK_RBUTTON:
  26                     return MouseButtonsStates[2];
  27                 default:
  28                     return KeyStateTable[keycode];
  29                 }
  30 }
  31
  32 /**********************************************************************
  33  *              GetKeyboardState                        [USER.222]
  34  */
  35 void GetKeyboardState(BYTE FAR *lpKeyState)
  36 {
  37     if (lpKeyState != NULL) {
  38         KeyStateTable[VK_LBUTTON] = MouseButtonsStates[0];
  39         KeyStateTable[VK_MBUTTON] = MouseButtonsStates[1];
  40         KeyStateTable[VK_RBUTTON] = MouseButtonsStates[2];
  41         memcpy(lpKeyState, KeyStateTable, 256);
  42     }
  43 }
  44
  45 /**********************************************************************
  46  *      SetKeyboardState            [USER.223]
  47  */
  48 void SetKeyboardState(BYTE FAR *lpKeyState)
  49 {
  50         if (lpKeyState != NULL) {
  51         memcpy(KeyStateTable, lpKeyState, 256);
  52         MouseButtonsStates[0] = KeyStateTable[VK_LBUTTON];
  53         MouseButtonsStates[1] = KeyStateTable[VK_MBUTTON];
  54         MouseButtonsStates[2] = KeyStateTable[VK_RBUTTON];
  55         }
  56 }
  57 /**********************************************************************
  58  *            GetAsyncKeyState        (USER.249)
  59  *
  60  *      Determine if a key is or was pressed.  retval has high-order
  61  * byte set to 1 if currently pressed, low-order byte 1 if key has
  62  * been pressed.
  63  *
  64  *      This uses the variable AsyncMouseButtonsStates and
  65  * AsyncKeyStateTable (set in event.c) which have the mouse button
  66  * number or key number (whichever is applicable) set to true if the
  67  * mouse or key had been depressed since the last call to
  68  * GetAsyncKeyState.
  69  */
  70 int GetAsyncKeyState(int nKey)
  71 {
  72         short   retval;
  73
  74         switch (nKey) {
  75
  76            case VK_LBUTTON:
  77                 retval = AsyncMouseButtonsStates[0] |
  78                               (MouseButtonsStates[0] << 8);
  79                 break;
  80            case VK_MBUTTON:
  81                 retval = AsyncMouseButtonsStates[1] |
  82                               (MouseButtonsStates[1] << 8);
  83                 break;
  84            case VK_RBUTTON:
  85                 retval = AsyncMouseButtonsStates[2] |
  86                               (MouseButtonsStates[2] << 8);
  87                 break;
  88            default:
  89                 retval = AsyncKeyStateTable[nKey] |
  90                               (KeyStateTable[nKey] << 8);
  91                 break;
  92         }
  93
  94         bzero(AsyncMouseButtonsStates, 3);      /* all states to false */
  95         bzero(AsyncKeyStateTable, 256);
  96
  97         return retval;
  98 }
  99