学步园

#include <linux/kd.h> 

#include <sys/ioctl.h> 

#include <stdio.h> 

#include <errno.h>

 #define NUMLOCK    0x02 

 #define CAPS    0X04 

 #define SCROLL  0X01 

 int main(int argc,char **argv) 

 { 

 int a=NUMLOCK; 

 char b=0;

  if(argc==1)

  { printf("usage /n./a.out - /n or  usage /n ./a.out +/n"); return -1; } 

  ioctl(0,KDGKBLED,&a);//读取小键盘状态 

  ioctl(0,KDGETLED,&b);//读取键盘灯状态 

  if(argv[1][0]=='-') 

   { 

   a &= ~NUMLOCK; 

   a &=~CAPS; 

   a &=~SCROLL; 

   b &=~NUMLOCK; 

   b &=~CAPS; 

   b &=~SCROLL; 

   } else { 

   a |=NUMLOCK; 

   a |=CAPS; 

   a |=SCROLL; 

   b |=NUMLOCK; 

   b |=CAPS; 

   b |=SCROLL; 

   } 

   ioctl(0,KDSKBLED,a);//设置键盘状态 

   ioctl(0,KDSETLED,b);//设置键盘灯状态

   } 

   只能在控制台模式下控制键盘灯及小键盘状态

    gcc test.c -o test

     -------------------------------------------------------------------------------------------- 

     #define PACKAGE "Xnumlock" 

     #define VERSION "1.0" 

     #include <string.h> 

     #include <stdlib.h> 

     #include <stdio.h> 

     #include <X11/Xlib.h> 

     #include <X11/extensions/XTest.h> 

     #include <X11/keysym.h> 

     #include <errno.h> 

     void usage( const char* argv0 )     

     {    

      printf( "NumLockX " VERSION "/n"         "Usage : %s [on|off]/n"         "on     - turns NumLock on in X ( default )/n"         "off    - turns NumLock off in X/n"         "/n"         , argv0 );    

       } 

 

 Display* dpy; int xtest_get_state(int key)     

 {     

 int i;     

 int numlock_mask = 0;     

 Window dummy1, dummy2;    

  int dummy3, dummy4, dummy5, dummy6;     

  unsigned int mask;    

  XModifierKeymap* map = XGetModifierMapping( dpy );     

  KeyCode numlock_keycode = XKeysymToKeycode( dpy, key );     

  if( numlock_keycode == NoSymbol )        

   return 0;     

   for( i = 0;i < 8;++i )        

    { 

    if( map->modifiermap[ map->max_keypermod * i ] == numlock_keycode ) numlock_mask = 1 << i; 

    }     

    XQueryPointer( dpy, DefaultRootWindow( dpy ), &dummy1, &dummy2,&dummy3, &dummy4, &dummy5, &dummy6, &mask );     

    XFreeModifiermap( map );    

    return mask & numlock_mask;     

  } 

     

     void xtest_change_on(int key)     

     {     

     errno=0;     

     XTestFakeKeyEvent( dpy, XKeysymToKeycode( dpy, key ), True, CurrentTime );     

     perror("on");     

     } 

     void xtest_change_off(int key)     

     {     

     errno=0;    

     XTestFakeKeyEvent( dpy, XKeysymToKeycode( dpy, key ), False, CurrentTime );     

     perror("off");     

     } 

     void set_on(int key)     

     {     

     if( !xtest_get_state(key))         

     xtest_change_on(key);     

     } 

     void set_off(int key)     

     {     

     if( xtest_get_state(key))         

     xtest_change_off(key);     

     } 

int main( int argc, char* argv[] )     

 {    

      /*if( argc > 2 )        

       {        

        usage( argv[ 0 ] );        

         return 1;         

         }*/ 

         int st;     

         dpy = XOpenDisplay( NULL );     

         if( dpy == NULL )         

         {         

     fprintf( stderr, "Error opening display!/n" );         

     return 1;         

     } 

     while(1) 

     { 

     //scanf("%d",&st); 

     //printf("sd =%d/n",st); 

     sleep(3); 

     if(st==1)

     { 

     printf("set_on/n"); 

     set_on(XK_Num_Lock); 

     set_off(XK_Caps_Lock); 

     st=0; 

     } else { 

     st=1; 

     printf("set_off/n"); 

     set_off(XK_Num_Lock); 

     set_off(XK_Num_Lock); 

     set_off(XK_Num_Lock); 

     set_off(XK_Caps_Lock); 

     }     

     XCloseDisplay( dpy );    

     return 0;     

     } 

     在x11模式下控制小键盘状态及键盘灯(这个是转的别人的，试验了下，效果不太理想,set_off和set_on需要连续调用两三次才生效) 

     gcc -o Xtest test.c  -lX11 -L/usr/X11R6/lib  -lXext -lXtst 

     ---------------------------------------------------------------------------------------------- 

     仅仅控制键盘灯的,即可以在控制台模式，也可在x11模式 

     int num=2,scr=1,caps=4;

      #define LED_CODE        0xED    /* command to keyboard to set LEDs */ 

      #define KEYBD   0x60 

      //argc[1]  1 2 4 3 5 6 7 

      int main(int argc,char **argv) 

      { 

      unsigned int leds; 

      ioperm(KEYBD,8,1); 

      //while(1) 

      //printf("%d %d/n",usleep(100000),inb(KEYBD));  //读键盘扫描码 

      if(argc==1)return; 

      leds=(scr<<0)|(num<<1)|(caps<<2); 

      leds=atoi(argv[1]); outb(LED_CODE, KEYBD); 

      outb(leds, KEYBD);//leds的第1,2,3位的值分别控制SCROll,NUM,CAPS 

      }