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56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/sdk/crt/conio/getch.c
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* PURPOSE: Writes a character to stdout
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* PROGRAMER: Ariadne
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* UPDATE HISTORY:
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* 28/12/98: Created
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*/
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#include <precomp.h>
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/*
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* @implemented
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*/
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int _getch(void)
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{
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DWORD NumberOfCharsRead = 0;
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char c;
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HANDLE ConsoleHandle;
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BOOL RestoreMode;
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DWORD ConsoleMode;
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if (char_avail) {
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c = ungot_char;
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char_avail = 0;
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} else {
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/*
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* _getch() is documented to NOT echo characters. Testing shows it
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* doesn't wait for a CR either. So we need to switch off
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* ENABLE_ECHO_INPUT and ENABLE_LINE_INPUT if they're currently
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* switched on.
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*/
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ConsoleHandle = (HANDLE) _get_osfhandle(stdin->_file);
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RestoreMode = GetConsoleMode(ConsoleHandle, &ConsoleMode) &&
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(0 != (ConsoleMode &
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(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT)));
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if (RestoreMode) {
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SetConsoleMode(ConsoleHandle,
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ConsoleMode & (~ (ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT)));
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}
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ReadConsoleA((HANDLE)_get_osfhandle(stdin->_file),
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&c,
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1,
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&NumberOfCharsRead,
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NULL);
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if (RestoreMode) {
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SetConsoleMode(ConsoleHandle, ConsoleMode);
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}
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}
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if (c == 10)
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c = 13;
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return c;
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}
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