from.render() not working with legacy backend

Comments

• Daniel

  September 2016 edited September 2016

  Hi Jaykob,
  My experience with forms is very limited, but I think this is because the form.render() is not meant to show the form on screen, but simply 'build' it, which means that the form is drawn to a back buffer first. To show the form, you need to call _exec(): see http://osdoc.cogsci.nl/3.1/manual/forms/widgets/form/#function-form4695exec40focus95widgetnone41. So does it work if you do:

  form.render()
  form._exec()
  clock.sleep(2000)
  

  
• Jaykob

  September 2016

  Hi Daniel!
  I also tried out the different combinations of render() and _exec().
  With your code it shows the form but then waits indefinitely for an input - which can't be provided as I don't have a text input, button or any other input...
• sebastiaan

  September 2016

  Calling form.render() should show the form without waiting for input, so it's similar tocanvas.show().

  • http://osdoc.cogsci.nl/3.1/manual/forms/custom/#non-interactive-forms

  So your approach looks correct. Could you upload the experiment so that we can see what's wrong?

  Cheers,
  Sebastiaan

  
  
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• Jaykob

  September 2016 edited September 2016

  OK, good to know that my approach is correct.
  I just created a very minimal experiment with basically only this form and it doesn't work either. The screen stays gray for 2s until the welcome sketchpad appears.
  I'm working with the newest Mac version 3.1.2.
  filedropper.com/opensesameformbug
• Jaykob

  September 2016

  Somehow the problem disappeared and it seems to be working now
• Jaykob

  October 2016

  Update: I'm having this problem again in a new experiment...