| 1 | title = 'Blt busy cursor demonstration' |
| 2 | |
| 3 | # Import Pmw from this directory tree. |
| 4 | import sys |
| 5 | sys.path[:0] = ['../../..'] |
| 6 | |
| 7 | import Tkinter |
| 8 | import Pmw |
| 9 | |
| 10 | class Demo: |
| 11 | def __init__(self, parent): |
| 12 | self.parent = parent |
| 13 | |
| 14 | if Pmw.Blt.havebltbusy(parent): |
| 15 | text = 'Click here to show the\nbusy cursor for one second.' |
| 16 | else: |
| 17 | text = 'Sorry\n' \ |
| 18 | 'Either the BLT package has not\n' \ |
| 19 | 'been installed on this system or\n' \ |
| 20 | 'it does not support the busy command.\n' \ |
| 21 | 'Clicking on this button will pause\n' \ |
| 22 | 'for one second but will not display\n' \ |
| 23 | 'the busy cursor.' |
| 24 | |
| 25 | button = Tkinter.Button(parent, |
| 26 | text = text, |
| 27 | command = Pmw.busycallback(self.sleep, parent.update)) |
| 28 | button.pack(padx = 10, pady = 10) |
| 29 | |
| 30 | entry = Tkinter.Entry(parent, width = 30) |
| 31 | entry.insert('end', 'Try to enter some text while busy.') |
| 32 | entry.pack(padx = 10, pady = 10) |
| 33 | |
| 34 | def sleep(self): |
| 35 | self.parent.after(1000) |
| 36 | |
| 37 | ###################################################################### |
| 38 | |
| 39 | # Create demo in root window for testing. |
| 40 | if __name__ == '__main__': |
| 41 | root = Tkinter.Tk() |
| 42 | Pmw.initialise(root) |
| 43 | root.title(title) |
| 44 | |
| 45 | exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy) |
| 46 | exitButton.pack(side = 'bottom') |
| 47 | widget = Demo(root) |
| 48 | root.mainloop() |