Demonstration of how to create a megawidget
#Pmw copyright
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#Copyright 2000-2002 Really Good Software Pty Ltd, Australia
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title = 'Demonstration of how to create a megawidget'
# Import Pmw from this directory tree.
import sys
sys.path[:0] = ['../../..']
import Tkinter
import Pmw
class TextDisplay(Pmw.MegaWidget):
# Demo Pmw megawidget.
def __init__(self, parent = None, **kw):
# Define the megawidget options.
optiondefs = ()
self.defineoptions(kw, optiondefs)
# Initialise the base class (after defining the options).
Pmw.MegaWidget.__init__(self, parent)
# Create the components.
interior = self.interior()
self._text = self.createcomponent('text',
(), None,
Tkinter.Text, (interior,), state = 'disabled')
self._text.pack(side='left', fill='both', expand='yes')
self._scrollbar = self.createcomponent('scrollbar',
(), None,
Tkinter.Scrollbar, (interior,), command = self._text.yview)
self._scrollbar.pack(side='right', fill='y')
self._text.configure(yscrollcommand = self._scrollbar.set)
# Check keywords and initialise options.
self.initialiseoptions()
def display(self, info):
self._text.configure(state = 'normal')
self._text.delete('1.0', 'end')
self._text.insert('1.0', info)
self._text.configure(state = 'disabled')
def append(self, info):
self._text.configure(state = 'normal')
self._text.insert('end', info)
self._text.configure(state = 'disabled')
class Demo:
def __init__(self, parent):
# Create and pack the megawidget.
text = TextDisplay(parent,
text_background = 'aliceblue',
text_width = 40,
text_height = 10,
text_wrap = 'none',
)
text.pack(fill = 'both', expand = 1)
text.display('This is an example of a simple Pmw megawidget.\n\n' +
'Public attributes of the Tkinter module:\n\n')
for name in dir(Tkinter):
if name[0] != '_':
text.append(' ' + name + '\n')
######################################################################
# 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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