Redirecting the output to your own pipe is a tidier solution because it avoids creating the output file, but this works fine:
ShellExecute(0, "open", "cmd.exe", "/C ipconfig > out.txt", 0, SW_HIDE);
You don’t see the cmd window and the output is redirected as expected.
Your code is probably failing (apart from the /C
thing) because you specify the path as "c:\projects\b"
rather than "c:\\projects\\b"
.