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
The graphic package is readily there, but how can you capture a region from the full screen so as to save it?
This program is to be invoked by some hot-key, such as setting it to be running when CTRL-PrtScn is pressed, or CTRL-CTRL (both control on left and right), or ALT-ALT.
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.
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