[pygtk] help with scrollbar

[Peter Morgan]

As a Newbie myself..

Think this little application should go in the wiki under

Example applications

pete

reidar wrote:
> you had lower and upper switched on the adjustment:
> try:
>
> adj1 = gtk.Adjustment(32.0, 32.0, 212.0, 0.1, 1.0,
> 1.0)
>
> http://www.pygtk.org/pygtk2reference/class-gtkadjustment.html
>
> On Fri, 23 Jun 2006 02:36:25 +0200, Christopher Spears 
> <cspears2002 at yahoo.com> wrote:
>
>> I have been trying to teach myself PyGTK.  I decided
>> to create a little GUI with a scrollbar.  Using the
>> scrollbar, I can select the temperature in degrees
>> Fahrenheit.  By clicking on the Convert button, the
>> GUI displays the corresponding degrees Celsius.
>>
>> I have made a lot of progress, but for some reason,
>> the thumb on the scrollbar will not move when I click
>> and drag it.  I asked for help on the Python tutor
>> mailing list, but there are not a lot of PyGTK experts
>> on that list.  I have looked over the docs and the
>> tutorial, too.  Can someone help me out?
>>
>> #!/usr/bin/python
>>
>> import pygtk
>> pygtk.require('2.0')
>> import gtk
>>
>> def convert_to_celsius(widget,data):
>>     degC = (data - 32)/1.8
>>     print "Degrees Celsius: %.2f" % degC
>>     
>> def scale_set_default_values(scale):
>>     scale.set_update_policy(gtk.UPDATE_CONTINUOUS)
>>     scale.set_digits(1)
>>     scale.set_value_pos(gtk.POS_LEFT)
>>     scale.set_draw_value(True)
>>     scale.set_sensitive(True)
>>     
>> class Conversion_GUI:
>>     def __init__(self):
>>         self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
>>         self.window.connect("destroy", lambda w:
>> gtk.main_quit())
>>         self.window.set_title("Convert to Celsius")
>>         self.window.set_default_size(200,240)
>>        
>>         box1 = gtk.VBox(False, 0)
>>         self.window.add(box1)
>>        
>>         box2 = gtk.HBox(False, 10)
>>         box2.set_border_width(10)
>>         box1.pack_end(box2, True, True, 0)
>>        
>>         box3 = gtk.HBox(False, 10)
>>         box3.set_border_width(10)
>>         box1.pack_end(box3, True, True, 0)
>>        
>>         adj1 = gtk.Adjustment(32.0, 212.0, 32.0, 0.1, 1.0,
>> 1.0)
>>         self.vscale = gtk.VScale(adj1)
>>         self.vscale.set_size_request(20, 300)
>>         scale_set_default_values(self.vscale)
>>         box1.pack_start(self.vscale, True, True, 0)
>>        
>>         quit_button = gtk.Button("Quit")
>>         quit_button.connect("clicked", lambda
>> w:gtk.main_quit())
>>         convert_button = gtk.Button("Convert")
>>         convert_button.connect("clicked",
>> convert_to_celsius, self.vscale.get_value())
>>         box3.pack_start(convert_button, True, True, 0)
>>         box2.pack_start(quit_button, True, True, 0)
>>        
>>         self.vscale.show()
>>         convert_button.show()
>>         quit_button.show()
>>         box3.show()
>>         box2.show()
>>         box1.show()
>>         self.window.show()
>>        
>>     def main(self):
>>         gtk.main()
>>         return 0
>>     
>> if __name__ == '__main__':
>>     convert = Conversion_GUI()
>>     convert.main()
>>
>> _______________________________________________
>> pygtk mailing list   pygtk at daa.com.au
>> http://www.daa.com.au/mailman/listinfo/pygtk
>> Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
>
>
>
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