🚀 go-pugleaf

I'm trying to control CVS from a GUI application. I have no trouble
executing cvs.exe and collecting its output, but I've had no luck
trying to send input to it when it prompts for a password (cvs logon
command).

I'm creating a pipe and setting the hStdInput field of TStartupInfo to
the read end before I create the process. Same thing with hStdOut and
hStdIn (using a second pipe of course). Peeking at the stdout pipe, I
see CVS's password prompt. But when I try to write to the stdin pipe,
I get an invalid handle error. I've tried WriteFile(), WriteConsole()
and WriteConsoleInput().

Another hint that something is wrong is that the CVS process seems to
run away - CPU goes to 100% and the process doesn't end until I kill
it. It's no surprise that it doesn't end, since it's waiting for
input, but why the 100% CPU time?

I thought this might be something to do with the cvs.exe itself -- I
read somewhere that not all programs are written in a way that they
will allow you to redirect standard input. So I tried to write a
simple console app of my own to test the theory, but I couldn't even
get my own app to redirect output, let alone input. (It was a simple
writeln/readln thing -- I guess I needed to do more?)

I've read tons of threads about redirecting output and input of
console programs and tried everything I've read, but I cannot get
cvs.exe to accept my input. If anyone has any thoughts about what I
might be doing wrong, or happens to know if CVS just won't allow this
(and if so, is there a work-around?), your replies would be greatly
appreciated.

I've had the same results from both CVSNT and the bona fide CVS Win32
binary.

Cheers,
MM