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rubyimagemagickrmagick

RMagicK image.display does not return immediately

I am using RMagicK for Ruby to draw and display images. The problem is that after:

img = rvg.draw()
img.diaplay

control is not returned to the caller immediately. The user has to manually close the window for the program to continue. How can I bypass this behavior?

Solution

  • You could create a sub-process that takes care of displaying the image for you, while you do some processing in the main process.

    img = rvg.draw()
pid = fork { img.diaplay }

Process.detach(pid) # wait for the child in another thread.

# more code

    Note that, fork is not available in some platforms, like Windows. You might have to use spawn if that's a problem for you.