[Pythoncard-users] RE: Disabling my app from closing

[Daryl F. <fly...@sb...>]

>I would like to know if there is a way to disable closing my app when
>clicking on the X closing button on the top-right.

This is actually fairly simple.  Basically, you just need to on_close
method.  From here, you can conditionally allow it to exit, print a message
or whatever.  Here is a (very) simple example:

[From noexit.py]
#!/usr/bin/python
"""
__version__ = "$Revision: 1.3 $"
__date__ = "$Date: 2004/04/14 02:38:47 $"
"""
from PythonCard import model, dialog

class MyBackground(model.Background):
    def on_initialize(self, event):
        pass
    def on_close(self, event):
        if self.components.ChkAllowExit.checked:
            event.skip()
        else:
            pass
            #dialog.alertDialog(self, "Check the box to allow closing", "No
Exit")

if __name__ == '__main__':
    app = model.Application(MyBackground)
    app.MainLoop()

[From noexit.rsrc.py]
{'application':{'type':'Application',
          'name':'Template',
    'backgrounds': [
    {'type':'Background',
          'name':'NoExit',
          'title':'Exit Example',
          'size':(250, 150),
         'components': [
{'type':'CheckBox',
    'name':'ChkAllowExit',
    'position':(80, 25),
    'label':'Allow Exit',
    },
] # end components
} # end background
] # end backgrounds
} }

If ChkAllowExit is not checked (default), nothing will happen.  You could
also change the pass to an alert or something similar.  If the user checks
the box, on_close will pass the close event on and the application will
close normally.

-Daryl

(Sorry for posting a whole programme and resource file.  I tried to keep it
as short as possible.)