1 files changed, 57 insertions, 0 deletions
diff --git a/winsup/mingw/samples/filehand/filehand.c b/winsup/mingw/samples/filehand/filehand.c
new file mode 100644
index 000000000..24e048c52
--- /dev/null
+++ b/winsup/mingw/samples/filehand/filehand.c
@@ -0,0 +1,57 @@
+/*
+ * An example showing how you can obtain the UNIX-ish file number from a
+ * FILE* and in turn how you can get the Win32 HANDLE of the file from
+ * the file number.
+ *
+ * This code is in the PUBLIC DOMAIN and has NO WARRANTY.
+ *
+ * Colin Peters <colin@fu.is.saga-u.ac.jp>
+ */
+
+#include <stdio.h>
+#include <io.h>
+#include <windows.h>
+
+int
+main (int argc, char* argv[])
+{
+	char*	szFileName;
+	FILE*	fileIn;
+	int	fnIn;
+	HANDLE	hFileIn;
+	char	caBuf[81];
+	int	nRead;
+
+	if (argc >= 2)
+	{
+		szFileName = argv[1];
+	}
+	else
+	{
+		szFileName = "junk.txt";
+	}
+
+	fileIn = fopen (szFileName, "r");
+
+	if (!fileIn)
+	{
+		printf ("Could not open %s for reading\n", szFileName);
+		exit(1);
+	}
+
+	fnIn = fileno (fileIn);
+	hFileIn = (HANDLE) _get_osfhandle (fnIn);
+
+	printf ("OS file handle %d\n", (int) hFileIn);
+
+	ReadFile (hFileIn, caBuf, 80, &nRead, NULL);
+
+	printf ("Read %d bytes using ReadFile.\n", nRead);
+
+	caBuf[nRead] = '\0';
+
+	printf ("\"%s\"\n", caBuf);
+
+	fclose (fileIn);
+}
+