How to capture a part of a screen using Ruby on Windows?

Question

Instead of using some third party app, I\'d like to write an app in Ruby that when invoked, will capture the full screen and save it in c:\\screenshot\\snap000001.png

Answer 1

I haven't tried it (I'm not on windows). But you could use Win32::Screenshot.

While looking around, I've found the following, which does the screenshot using that library

width, height, bitmap = Win32::Screenshot.desktop
img_lst = ImageList.new
img_lst.from_blob(bitmap)
img_lst.write('public/screen.png')

And should write your screenshot as a png file.