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title = 'Blt busy cursor demonstration'
# Import Pmw from this directory tree.
import sys
sys.path[:0] = ['../../..']
import Tkinter
import Pmw
class Demo:
def __init__(self, parent):
self.parent = parent
if Pmw.Blt.havebltbusy(parent):
text = 'Click here to show the\nbusy cursor for one second.'
else:
text = 'Sorry\n' \
'Either the BLT package has not\n' \
'been installed on this system or\n' \
'it does not support the busy command.\n' \
'Clicking on this button will pause\n' \
'for one second but will not display\n' \
'the busy cursor.'
button = Tkinter.Button(parent,
text = text,
command = Pmw.busycallback(self.sleep, parent.update))
button.pack(padx = 10, pady = 10)
entry = Tkinter.Entry(parent, width = 30)
entry.insert('end', 'Try to enter some text while busy.')
entry.pack(padx = 10, pady = 10)
def sleep(self):
self.parent.after(1000)
######################################################################
# Create demo in root window for testing.
if __name__ == '__main__':
root = Tkinter.Tk()
Pmw.initialise(root)
root.title(title)
exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy)
exitButton.pack(side = 'bottom')
widget = Demo(root)
root.mainloop()
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