I saw one post back a while ago, but the main answer was for Linux. Currently, what's the easiest way to get the screen resolution (width/height) using Ruby on Windows.
3 Answers
Answers 1
One easy way is to wrap system commands and execute them in Ruby:
@screen = `wmic desktopmonitor get screenheight, screenwidth` You can either display them or save its output in a file.
To actually parse it, I found a helper for Windows cmd.exe in this post:
for /f %%i in ('wmic desktopmonitor get screenheight^,screenwidth /value ^| find "="') do set "%%f" echo your screen is %screenwidth% * %screenheight% pixels This way you can easily get the values in variables and store them in your Ruby program.
I couldn't find a simple gem though to do this, as you have for Linux.
Answers 2
You might try this code as suggested on ruby-forum.com which uses the WIN32OLE library. This works for Windows exclusively, though.
require 'dl/import' require 'dl/struct' SM_CXSCREEN = 0 SM_CYSCREEN = 1 user32 = DL.dlopen("user32") get_system_metrics = user32['GetSystemMetrics', 'ILI'] x, tmp = get_system_metrics.call(SM_CXSCREEN,0) y, tmp = get_system_metrics.call(SM_CYSCREEN,0) puts "#{x} x #{y}"
Answers 3
I also suggest to go straight with system command wrapping. Tested on win7.
# also this way res_cmd = %x[wmic desktopmonitor get screenheight, screenwidth] res = res_cmd.split p w = res[3].to_i p h = res[2].to_i # or this way command = open("|wmic desktopmonitor get screenheight, screenwidth") res_cmd = command.read() res = res_cmd.split p w = res[3].to_i p h = res[2].to_i # or making a method def screen_res res_cmd = %x[wmic desktopmonitor get screenheight, screenwidth] res = res_cmd.split return res[3].to_i, res[2].to_i end w, h = screen_res p w p h 
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