| 1 | title = 'Pmw error handling demonstration' |
| 2 | |
| 3 | # Import Pmw from this directory tree. |
| 4 | import sys |
| 5 | sys.path[:0] = ['../../..'] |
| 6 | |
| 7 | import string |
| 8 | import Tkinter |
| 9 | import Pmw |
| 10 | |
| 11 | class Demo: |
| 12 | def __init__(self, parent): |
| 13 | # Create two buttons to generate errors. |
| 14 | w = Tkinter.Button(parent, text = 'Click here to generate\n' + |
| 15 | 'an error in a command callback.', command = self.execute) |
| 16 | w.pack(padx = 8, pady = 8) |
| 17 | |
| 18 | w = Tkinter.Button(parent, text = 'Click here to generate\n' + |
| 19 | 'an error in a callback called\nfrom an event binding.') |
| 20 | w.pack(padx = 8, pady = 8) |
| 21 | w.bind('<ButtonRelease-1>', self.execute) |
| 22 | w.bind('<Key-space>', self.execute) |
| 23 | |
| 24 | def execute(self, event = None): |
| 25 | self._error() |
| 26 | |
| 27 | def _error(self): |
| 28 | # Divide by zero |
| 29 | 1/0 |
| 30 | |
| 31 | ###################################################################### |
| 32 | |
| 33 | # Create demo in root window for testing. |
| 34 | if __name__ == '__main__': |
| 35 | root = Tkinter.Tk() |
| 36 | Pmw.initialise(root) |
| 37 | root.title(title) |
| 38 | |
| 39 | exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy) |
| 40 | exitButton.pack(side = 'bottom') |
| 41 | widget = Demo(root) |
| 42 | root.mainloop() |