_getche_nolock, _getwche_nolock

Gets a character from the console with echo and without locking the thread.

int _getche_nolock( void );
wint_t _getwche_nolock( void );

Return Value

Returns the character read. There is no error return.

Remarks

_getche_nolock and _getwche_nolock are identical to _getche and _getwche except that they not protected from interference by other threads. They might be faster because they do not incur the overhead of locking out other threads. Use these functions only in thread-safe contexts such as single-threaded applications or where the calling scope already handles thread isolation.

Generic-Text Routine Mappings

Requirements

For more compatibility information, see Compatibility in the Introduction.

Example

// crt_getche_nolock.c
// compile with: /c
// This program reads characters from
// the keyboard until it receives a 'Y' or 'y'.
 

#include <conio.h>
#include <ctype.h>

int main( void )
{
   int ch;

   _cputs( "Type 'Y' when finished typing keys: " );
   do
   {
      ch = _getche_nolock();
      ch = toupper( ch );
   } while( ch != 'Y' );

   _putch_nolock( ch );
   _putch_nolock( '\r' );    // Carriage return
   _putch_nolock( '\n' );    // Line feed 
}

  abcdey
Type 'Y' when finished typing keys: Y

NET Framework Equivalent

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

See Also

Reference

Console and Port I/O

_cgets, _cgetws

getc, getwc

_ungetch, _ungetwch, _ungetch_nolock, _ungetwch_nolock