C / C++ / MFC

#include <conio.h>
 
getch();

int __cdecl _getch (
        void
        )
{
        INPUT_RECORD ConInpRec;
        DWORD NumRead;
        CharPair *pCP;
        int ch = 0;                     /* single character buffer */
        DWORD oldstate;

        /*
         * check pushback buffer (chbuf) a for character
         */
        if ( chbuf != EOF ) {
            /*
             * something there, clear buffer and return the character.
             */
            ch = (unsigned char)(chbuf & 0xFF);
            chbuf = EOF;
            return ch;
        }

        if (_coninpfh == -1)
            return EOF;

        /*
         * _coninpfh, the handle to the console input, is created the first
         * time that either _getch() or _cgets() or _kbhit() is called.
         */

        if ( _coninpfh == -2 )
            __initconin();

        /*
         * Switch to raw mode (no line input, no echo input)
         */
        GetConsoleMode( (HANDLE)_coninpfh, &oldstate );
        SetConsoleMode( (HANDLE)_coninpfh, 0L );

        for ( ; ; ) {

            /*
             * Get a console input event.
             */
            if ( !ReadConsoleInput( (HANDLE)_coninpfh,
                                    &ConInpRec,
                                    1L,
                                    &NumRead )
                 || (NumRead == 0L) )
            {
                ch = EOF;
                break;
            }

            /*
             * Look for, and decipher, key events.
             */
            if ( (ConInpRec.EventType == KEY_EVENT) &&
                 ConInpRec.Event.KeyEvent.bKeyDown ) {
                /*
                 * Easy case: if uChar.AsciiChar is non-zero, just stuff it
                 * into ch and quit.
                 */

                if ( ch = (unsigned char)ConInpRec.Event.KeyEvent.uChar.AsciiChar )
                    break;

                /*
                 * Hard case: either an extended code or an event which should
                 * not be recognized. let _getextendedkeycode() do the work...
                 */
                if ( pCP = _getextendedkeycode( &(ConInpRec.Event.KeyEvent) ) ) {
                    ch = pCP->LeadChar;
                    chbuf = pCP->SecondChar;
                    break;
                }
            }
        }


        /*
         * Restore previous console mode.
         */
        SetConsoleMode( (HANDLE)_coninpfh, oldstate );

        return ch;
}

kakan wrote:

the question was

toxcct wrote:

why still wanting to use a function that doesn't fit the best to your needs ?

Cedric Moonen wrote:

Or maybe somebody has another suggestion ? Any idea is welcome.