osdep/getch2-win.c

   1 /* windows TermIO for MPlayer          (C) 2003 Sascha Sommer */
   2
   3 // See  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/VirtualKeyCodes.asp
   4 // for additional virtual keycodes
   5
   6
   7 #include <windows.h>
   8 #include "keycodes.h"
   9
  10 int screen_width=80;
  11 int screen_height=24;
  12
  13 void get_screen_size(){
  14 }
  15
  16 static HANDLE stdin;
  17 static int getch2_status=0;
  18
  19 int getch2(int time){
  20         INPUT_RECORD eventbuffer[128];
  21     DWORD retval;
  22         int i=0;
  23     if(!getch2_status)return -1;
  24     /*check if there are input events*/
  25         if(!GetNumberOfConsoleInputEvents(stdin,&retval))
  26         {
  27                 printf("getch2: can't get number of input events: %i\n",GetLastError());
  28                 return -1;
  29         }
  30     if(retval<=0)return -1;
  31
  32         /*read all events*/
  33         if(!ReadConsoleInput(stdin,eventbuffer,128,&retval))
  34         {
  35                 printf("getch: can't read input events\n");
  36                 return -1;
  37         }
  38
  39         /*filter out keyevents*/
  40     for (i = 0; i < retval; i++)
  41     {
  42                 switch(eventbuffer[i].EventType)
  43                 {
  44                         case KEY_EVENT:
  45                                 /*only a pressed key is interresting for us*/
  46                                 if(eventbuffer[i].Event.KeyEvent.bKeyDown == TRUE)
  47                                 {
  48                                         /*check for special keys*/
  49                                         switch(eventbuffer[i].Event.KeyEvent.wVirtualKeyCode)
  50                                         {
  51                                         case VK_HOME:
  52                                                 return KEY_HOME;
  53                                         case VK_END:
  54                                                 return KEY_END;
  55                                         case VK_DELETE:
  56                                                 return KEY_DEL;
  57                     case VK_INSERT:
  58                                                 return KEY_INS;
  59                                         case VK_BACK:
  60                                                 return KEY_BS;
  61                                         case VK_PRIOR:
  62                                                 return KEY_PGUP;
  63                                         case VK_NEXT:
  64                                                 return KEY_PGDWN;
  65                                         case VK_RETURN:
  66                                                 return KEY_ENTER;
  67                                         case VK_ESCAPE:
  68                                                 return KEY_ESC;
  69                                         case VK_LEFT:
  70                                                 return KEY_LEFT;
  71                                         case VK_UP:
  72                                                 return KEY_UP;
  73                                         case VK_RIGHT:
  74                                                 return KEY_RIGHT;
  75                                         case VK_DOWN:
  76                                                 return KEY_DOWN;
  77                     case VK_SHIFT:
  78                         continue;
  79                                         }
  80                                         /*check for function keys*/
  81                                 if(0x87 >= eventbuffer[i].Event.KeyEvent.wVirtualKeyCode >= 0x70)
  82                                                 return (KEY_F + 1 + eventbuffer[i].Event.KeyEvent.wVirtualKeyCode - 0x70);
  83
  84                                         /*only characters should be remaining*/
  85                                         //printf("getch2: YOU PRESSED \"%c\" \n",eventbuffer[i].Event.KeyEvent.uChar.AsciiChar);
  86                                     return eventbuffer[i].Event.KeyEvent.uChar.AsciiChar;
  87                                 }
  88                                 break;
  89
  90                         case MOUSE_EVENT:
  91             case WINDOW_BUFFER_SIZE_EVENT:
  92             case FOCUS_EVENT:
  93             case MENU_EVENT:
  94             default:
  95                                 //printf("getch2: unsupported event type");
  96                             break;
  97         }
  98     }
  99         return -1;
 100 }
 101
 102
 103 void getch2_enable(){
 104         DWORD retval;
 105     stdin = GetStdHandle(STD_INPUT_HANDLE);
 106         if(!GetNumberOfConsoleInputEvents(stdin,&retval))
 107         {
 108                 printf("getch2: %i can't get number of input events  [disabling console input]\n",GetLastError());
 109                 getch2_status = 0;
 110         }
 111     else getch2_status=1;
 112 }
 113
 114 void getch2_disable(){
 115     if(!getch2_status) return; // already disabled / never enabled
 116     getch2_status=0;
 117 }
 118