diff --git a/ncurses/tinfo/lib_win32util.c b/ncurses/tinfo/lib_win32util.c
new file mode 100644
index 0000000..c67c8ce
--- /dev/null
+++ b/ncurses/tinfo/lib_win32util.c
@@ -0,0 +1,134 @@
+/****************************************************************************
+ * Copyright 2020-2021,2023 Thomas E. Dickey                                *
+ * Copyright 1998-2009,2010 Free Software Foundation, Inc.                  *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Juergen Pfeifer                                                 *
+ *     and: Thomas E. Dickey                                                *
+ ****************************************************************************/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_win32util.c,v 1.4 2023/06/17 17:19:06 tom Exp $")
+
+#ifdef _NC_WINDOWS
+#include <io.h>
+
+#ifdef _NC_CHECK_MINTTY
+#define PSAPI_VERSION 2
+#include <psapi.h>
+#include <tchar.h>
+
+#define array_length(a) (sizeof(a)/sizeof(a[0]))
+
+/*   This function tests, whether or not the ncurses application
+     is running as a descendant of MSYS2/cygwin mintty terminal
+     application. mintty doesn't use Windows Console for its screen
+     I/O, so the native Windows _isatty doesn't recognize it as
+     character device. But we can discover we are at the end of an
+     Pipe and can query the server side of the pipe, looking whether
+     or not this is mintty.
+     For now we terminate the program if we discover that situation.
+     Although in theory it would be possible, to remotely manipulate
+     the terminal state of mintty, this is out of scope for now and
+     not worth the significant effort.
+ */
+NCURSES_EXPORT(int)
+_nc_console_checkmintty(int fd, LPHANDLE pMinTTY)
+{
+    HANDLE handle = _nc_console_handle(fd);
+    DWORD dw;
+    int code = 0;
+
+    T((T_CALLED("lib_winhelper::_nc_console_checkmintty(%d, %p)"), fd, pMinTTY));
+
+    if (handle != INVALID_HANDLE_VALUE) {
+	dw = GetFileType(handle);
+	if (dw == FILE_TYPE_PIPE) {
+	    if (GetNamedPipeInfo(handle, 0, 0, 0, 0)) {
+		ULONG pPid;
+		/* Requires NT6 */
+		if (GetNamedPipeServerProcessId(handle, &pPid)) {
+		    TCHAR buf[MAX_PATH];
+		    DWORD len = 0;
+		    /* These security attributes may allow us to
+		       create a remote thread in mintty to manipulate
+		       the terminal state remotely */
+		    HANDLE pHandle = OpenProcess(PROCESS_CREATE_THREAD
+						 | PROCESS_QUERY_INFORMATION
+						 | PROCESS_VM_OPERATION
+						 | PROCESS_VM_WRITE
+						 | PROCESS_VM_READ,
+						 FALSE,
+						 pPid);
+		    if (pMinTTY)
+			*pMinTTY = INVALID_HANDLE_VALUE;
+		    if (pHandle != INVALID_HANDLE_VALUE) {
+			if ((len = GetProcessImageFileName(pHandle,
+							   buf,
+							   (DWORD)
+							   array_length(buf)))) {
+			    TCHAR *pos = _tcsrchr(buf, _T('\\'));
+			    if (pos) {
+				pos++;
+				if (_tcsnicmp(pos, _TEXT("mintty.exe"), 10)
+				    == 0) {
+				    if (pMinTTY)
+					*pMinTTY = pHandle;
+				    code = 1;
+				}
+			    }
+			}
+		    }
+		}
+	    }
+	}
+    }
+    returnCode(code);
+}
+#endif /* _NC_CHECK_MINTTY */
+
+#if HAVE_GETTIMEOFDAY == 2
+#define JAN1970 116444736000000000LL	/* the value for 01/01/1970 00:00 */
+
+NCURSES_EXPORT(int)
+_nc_gettimeofday(struct timeval *tv, void *tz GCC_UNUSED)
+{
+    union {
+	FILETIME ft;
+	long long since1601;	/* time since 1 Jan 1601 in 100ns units */
+    } data;
+
+    GetSystemTimeAsFileTime(&data.ft);
+    tv->tv_usec = (long) ((data.since1601 / 10LL) % 1000000LL);
+    tv->tv_sec = (long) ((data.since1601 - JAN1970) / 10000000LL);
+    return (0);
+}
+#endif // HAVE_GETTIMEOFDAY == 2
+
+#endif // _NC_WINDOWS