lParam

    The repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag, as shown in the following table.
    Bits	Meaning
    0-15	The repeat count for the current message. The value is the number of times the keystroke is autorepeated as a result of the user holding down the key. If the keystroke is held long enough, multiple messages are sent. However, the repeat count is not cumulative.
    16-23	The scan code. The value depends on the OEM.
    24	Indicates whether the key is an extended key, such as the right-hand ALT and CTRL keys that appear on an enhanced 101- or 102-key keyboard. The value is 1 if it is an extended key; otherwise, it is 0.
    25-28	Reserved; do not use.
    29	The context code. The value is 1 if the ALT key is held down while the key is pressed; otherwise, the value is 0.
    30	The previous key state. The value is 1 if the key is down before the message is sent, or it is 0 if the key is up.
    31	The transition state. The value is 1 if the key is being released, or it is 0 if the key is being pressed.

application 'Каркасное приложение' started (259:'00000001 00000011')
WM_KEYUP: 13: '(null)'


     button pressed( WM_CHAR): 97/a 1 30

!!! 30,  30, add/alt/pb/b (0/0/0/0/0), code: 30/''
bits: '00000000 00011110': b15/b14/p13/b12-9/b8 (0/0/0/0/0), code:30/''
bits2: '00000000 00011110'
WM_KEYUP: 65: '(null)'

                button pressed( WM_CHAR): 1/ 1 30

!!! 30,  30, add/alt/pb/b (0/0/0/0/0), code: 30/''
bits: '00000000 00011110': b15/b14/p13/b12-9/b8 (0/0/0/0/0), code:30/''
bits2: '00000000 00011110'
WM_KEYUP: 65: '(null)'
WM_KEYUP: 17: '(null)'

               button pressed( WM_CHAR): 65/A 1 30

!!! 30,  30, add/alt/pb/b (0/0/0/0/0), code: 30/''
bits: '00000000 00011110': b15/b14/p13/b12-9/b8 (0/0/0/0/0), code:30/''
bits2: '00000000 00011110'
WM_KEYUP: 65: '(null)'
WM_KEYUP: 16: '(null)'
WM_KEYUP: 18: '(null)'
application stoped

struct TWM_CHAR {
  unsigned    code:8;
  unsigned    add:1;
  unsigned    sys:4;
  unsigned    alt:1;
  unsigned    pb:1;
  unsigned    p :1;
};

union SH_WM_CHAR
{
	ushort    sh;
	TWM_CHAR  map;
};


TWM_CHAR getMap(ushort prm){
  SH_WM_CHAR ret;

  ret.sh=prm;
  fprintf(out, "!!! %hd,  %hd, add/alt/pb/b (%hd/%hd/%hd/%hd/%hd), code: %hd/'%c'\n",
                      prm, ret.sh, 
                                     (ushort) ret.map.add, 
                                         (ushort)ret.map.alt, 
                                             (ushort)ret.map.pb, 
                                                (ushort)ret.map.p, 
                                                   (ushort)ret.map.sys, 
                                                     (ushort) ret.map.code, 
                                                                 ret.map.code);



  return ret.map;
}




LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMessage, WPARAM wParam, LPARAM lParam)
{
  int result;
  uchar  buf[20]; memset(buf, 20, 0);
  uchar but = wParam;
  ushort h = HIWORD(lParam);
  ushort l = LOWORD(lParam);
  TWM_CHAR  map;
  ushort *psh = (ushort*) ↦
  const uchar *nm = 0;


	switch(uMessage)
	{
	case WM_CHAR: // нажатие клавиши.


		fprintf(out, "button pressed( WM_CHAR): %d/%c The repeat count: %hd 16-31:%hd\n", 
                      wParam, but, l, h);
	  ;
	  map= getMap(h);
//                                   31  /30/ 29/28-25/24                        16-23
           fprintf(out, "bits: '%s': b15/b14/p13/b12-9/b8 (%hd/%hd/%hd/%hd/%hd), scan-code:%hd/'%c'\n"
                                  ,stoa(h, buf) 
                                   ,(ushort)map.p 
                                     ,(ushort)map.pb 
                                       ,(ushort)map.alt 
                                         ,(ushort)map.sys 
                                           ,(ushort) map.add 
                                             ,(ushort)   map.code 
                                              , (uchar) map.code);

           fprintf(out, "bits2: '%s'\n", stoa(*psh, buf)); 

		break;