How to change gVim icon on Windows?

Question

When open gvim, there is a small icon Vim in the title plus buffer name.

I'd like to be able to hack anything about vim, including being able to change this gvim's icon. Is there a way to do that?

Answer 1

I solved my problem by reading the doc at :h windows-icon:

                  *windows-icon*
Q. I don't like the Vim icon, can I change it?
A. Yes, place your favorite icon in bitmaps/vim.ico in a directory of
   'runtimepath'.  For example ~/vimfiles/bitmaps/vim.ico.