Module: Watirloo::ScreenCapture

Defined in:
lib/watirloo/screenshot.rb

Constant Summary collapse

KEYEVENTF_KEYUP = 
0x2
VK_CONTROL = 
0x11
VK_MENU = 
0x12
VK_SHIFT = 
0x10
VK_SNAPSHOT = 
0x2C

Instance Method Summary collapse

Instance Method Details

#screenshot(what = :desktop) ⇒ Object

send key events Ctrl+PrintScreen using win32 to activate greenshot screencatpure program sourceforge.net/projects/greenshot/ greenshot must be configured beforehand and running (best to just run it at win startup)

output: save automatically to a location of your choice (best with png, smallest files)
filepattern: recommended greenshot_%YYYY%-%MM%-%DD%_%hh%-%mm%-%ss%
turn off open in editor option

For reference see Watir::ScreenCapture.screen_capture method in watir gem by default it takes a screenshot of the desktop Ctrl+PrintScreen any other arg snaps the last region Shift+PrintScreen (call with :region arg)



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# File 'lib/watirloo/screenshot.rb', line 22

def screenshot what=:desktop
  # WIN32API.new(dllname, func, import, export = "0")
  keybd_event = Win32API.new("user32", "keybd_event", ['I','I','L','L'], 'V')
  #keybd_event(bVk, bScan, dwFlags, dwExtraInfo)
  #Simulate a keyboard event
  if what == :desktop
    # Ctrl + PrintScreen keybd event
    keybd_event.Call(VK_CONTROL, 1, 0, 0)
    keybd_event.Call(VK_SNAPSHOT, 1, 0, 0)
    keybd_event.Call(VK_SNAPSHOT, 1, KEYEVENTF_KEYUP, 0)
    keybd_event.Call(VK_CONTROL, 1, KEYEVENTF_KEYUP, 0)
  else
    # Shift + PrintScreen keybd event
    keybd_event.Call(VK_SHIFT, 1, 0, 0)
    keybd_event.Call(VK_SNAPSHOT, 1, 0, 0)
    keybd_event.Call(VK_SNAPSHOT, 1, KEYEVENTF_KEYUP, 0)
    keybd_event.Call(VK_SHIFT, 1, KEYEVENTF_KEYUP, 0)
  end
  sleep 1 #give time to save
end