Get the onWindowClose event

Scripting Issues
1

Hi, i’m searching for a long time and i dont understand how to get the onWindowClose event.
Do someone have a simple example ?

Thanks

3o3

2

Listen for ‘window-event’, and then check win.getProperties().getOpen() to see if the window is no longer open. There’s a fine example of this in direct/src/showbase/ShowBase.py.

David

3

Hi, and thanks for your fast and precise answer.
Ok, now i understand better, but i still can’t get the on close : properties.getOpen() always return 1

I have done all like in ShowBase.py :

self.accept('window-event', self.onClose)

and the func :

  def onClose(self, win):
      if win == base.winList[0]:
          properties = win.getProperties()
          print "Got window event: %s" % (repr(properties))
          print "getOpen = "+str(properties.getOpen())
          if not properties.getOpen(): #this never appen
              print "User closed main window."

Maybe it’s because when i close the window, python script is ending before executing onClose()
But why ?

I must say that my english is very poor, so understanding the doc is quiet difficult …

thanks again

3o3

4

That’s because ShowBase is calling this code as well, and as you can see, it checks if the window is still open – if not, it calls self.userExit() to shut down the application.
One way to prevent this is by setting self.userExit to an empty function:

base.userExit = lambda: None

That will prevent your program from exiting when you close the window, but you do need to close the program yourself then when you finish with the window.

5

Ok, thanks, but i realise that my code was in a class, so instead of self.accept , i use base.accept, and it’s working quiet well exept that double exec returns error.
Now with

base.userExit = lambda: None

it works perfectly

Topic is solve

Many thanks

3o3