I want to give errors like this, while activating my plugin.

enter image description here

Which hooks should i use ? Can you share simple examples ?

In shortly,when user activate my plugin, is a directory's CHMOD isn't 777 , i'll warn it and stop activation.

1 Answer 1


Check out : WP Error

And this link covers how the plugin activation error works: http://www.squarepenguin.com/wordpress/?p=6

And I don't see any reason why you should ever chmod a directory to 777

  • 1
    I think he wants to recreate the warning messages that appear on top of the admin screen. All WP_Error does is give you a way of storing errors in an object. Dec 8, 2011 at 16:24
  • @MannyFleurmond right. I want to generate custom errors and CHMOD 777 just an example :)
    – Eray
    Dec 8, 2011 at 16:25

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