Re: PATCH: Use getche on Win32

Mark Mitchell
2005-05-10T06:01:07Z

Eli Zaretskii wrote:
>>Date: Mon, 9 May 2005 13:15:50 -0700
>>From: Mark Mitchell <mark@codesourcery.com>
>>Cc: gdb-patches@sources.redhat.com
>>
>>Windows console semantics are different from UNIX. If we just use
>>"read" to read what the user's typing, we end up blocking until a
>>newline is available, and even then there are some oddities. The
>>easiest thing seems to be to use the special "getche" (short for "get
>>character with echo") routine which does the right thing.
>>
>>Reviews?
>
>
> What happens if you press one of the special keys, like Ctrl-C or the
> arrow keys or PageDown? Does getche still DTRT?

Ctrl-C shows up as code 3, despite the fact that the documentation says
that you can't read Ctrl-C. The arrows and such are two-byte sequences;
the first byte is 0xE0, while the second byte is a letter. For example,
left-arrow is 0xE0 0x50. So, I'm not sure this entirely qualifies as
"DTRT", but it's not totally broken either.

--
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com
(916) 791-8304