Can I redirect output of a program to gvim?

I want to redirect the output of some Windows program directly to gvim basically for searching the output. Say for example the result of findstr cmd. Is it possible to do this without dumping it to a file and subsequently loading that file in gvim?

sure:

dir | gvim -

the - option tells vim to open stdin

This works for Windows and Linux versions.

If you're already in Vim you can use the r command to read like this:

:r !<cmd>

E.g.

:r !dir