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12345678910111213141516171819202122232425262728293031323334353637383940//// putwch.cpp//// Copyright (c) Microsoft Corporation. All rights reserved.//// Defines _putwch(), which writes a wide character to the console.//#include <conio.h>#include <corecrt_internal_lowio.h>#include <corecrt_internal_ptd_propagation.h>
// Writes a wide character to the console. Returns the character on success,// WEOF on failure.extern "C" wint_t __cdecl _putwch(wchar_t const c){ return __acrt_lock_and_call(__acrt_conio_lock, [&] { return _putwch_nolock(c); });}
extern "C" wint_t __cdecl _putwch_nolock(wchar_t const c){ if (__dcrt_lowio_ensure_console_output_initialized() == FALSE) return WEOF;
// Write character to console: DWORD charsWritten; if (__dcrt_write_console(&c, 1, &charsWritten) == FALSE) return WEOF;
return c;}
extern "C" wint_t __cdecl _putwch_nolock_internal(wchar_t const c, __crt_cached_ptd_host&){ // Currently _putwch_nolock does not require any PTD access. Do not need to propagate __crt_cached_ptd_host&. return _putwch_nolock(c);}