sendOSCMsg is not defined on Kivy (Windows Shell) - windows

Question

I tried another attempt with this
kivy 1.9.0
from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.gridlayout import GridLayout
from kivy.lang import Builder
from kivy.uix.widget import Widget
from simpleOSC import initOSCClient, initOSCServer, closeOSC, \
setOSCHandler, sendOSCMsg
class OscShowcase(BoxLayout):
pass
def __init__(self, **kwargs):
super(OscShowcase, self).__init__(**kwargs)
#self.but_Osc = Button(text='Press to show Osc')
#self.but_Osc.bind(on_release=self.send_Osc)
#self.add_widget(self.but_Osc)
def send_Osc(self, *l):
pass
#sendOSCMsg('/chaine_en_dur/', [2.0])
def sendOSCMsg( address='/print', data=[] ) :
m = OSCMessage()
m.setAddress(address)
for d in data :
m.append(d)
basic_client.send(m)
class OscWidget(GridLayout):
def __init__(self, **kwargs):
super(OscWidget, self).__init__(**kwargs)
class TestOscApp(App):
def build(self):
return OscShowcase()
if __name__ == '__main__':
host = '127.0.0.1'
sport = 9000
rport = 9001
# osc
initOSCClient(host, sport)
initOSCServer(host, rport)
TestOscApp().run()
.kv file
<OscShowcase>:
BoxLayout:
OscWidget:
Button:
text: 'OSC'
pos: (700, 500)
# on_release : sendOSCMsg('')
# sendOSCMsg: '/chaine_en_dur/', [2.0]
# on_release : self.but_Osc.bind()
group: 'OscButton'
on_press: sendOSCMsg('2')
I still get an error "NameError: name 'sendOSCMsg is not defined" when I press the button. Is anybody can help me to understand why? I would like to send osc messages out to Max MSP

Answer 1

Kv Lang has some scopes, you can read more about it here
There are three keywords specific to Kv language:
app: always refers to the instance of your application.
root: refers to the base widget/template in the current rule
self: always refer to the current widget
You can run a method from TestOscApp with app.method_name() and from OscShowcase with root.method_name()
So, just update your kv to call sendOSCMsg from OscShowcase:
on_press: root.sendOSCMsg('2')