Update Pushbutton label synchronizing with napari

I am working to integrate magicgui into napari. I create a dock widget inside napari. I have a pushbutton inside. Now, I want to change the label display and also value of pushbutton every time the button is pushed. Like, when button pushed, the display label on button will be changed between ‘connect’ and ‘disconnect’. Here is my code. However, even though the event.value changed, the pushbutton’s value and dislabel never update in napari and also in its own value. Could someone help me figure it out? Thanks.

import napari 
from skimage import data 
from magicgui import widgets 

def tryme(event):
    print("Before event is {}".format(event.value))
    print("Before Button {}".format(event._sources[0].value))
    if event.value == False:
        event._sources[0].value = 1 
        event._sources[0]._qwidget.setText("Connect")
        print(event._sources[0].text)
        event.value = True 
    else:
        event._sources[0].value = 0 
        event._sources[0]._qwidget.setText("Disconnect")
        print(event._sources[0].text)
        event.value = False
    print("After event is {}".format(event.value))
    print("After Button {}".format(event._sources[0].value))
    return event._sources[0]

if __name__ == "__main__":
    viewer = napari.Viewer()

    wSetPowerLevel = widgets.FloatSlider(name="setPowerLevel",value=10,max=100,label="Power level(%)",min=0,step=0.1)
    wSetLowerBandwidth = widgets.FloatSlider(name="setLowerBandwidth",value=400,max=700,label="Lower BW(nm)",min=400,step=0.1)
    wSetUpperBandwidth = widgets.FloatSlider(name="setUpperBandwidth",value=1200,max=2000,label="Upper BW(nm)",min=1200,step=0.1)
    wTimeOut = widgets.Label(name="Timeout (s)",value="0.5",label="Timeout(s)")
    wStatus  = widgets.Label(name="Status",value="Not connected",label="Status")
    wVariaStatus = widgets.Label(name="VariaStatus",value="Not connected",label="VariaStatus")
    wConnect = widgets.PushButton(name="Connect",tooltip="connect or disconnect from laser",value=0,text="Connect")
    wEmission = widgets.PushButton(name="Emission",tooltip="set laser emission",value=0,text="Emission Off")
    wResetInterlock = widgets.PushButton(name="ResetInterlock",tooltip="reset laser interlock",value=0,text="Reset Interlock")
    
    wConnect.changed.connect(tryme)
    container = widgets.Container(widgets=[wSetPowerLevel,wSetLowerBandwidth,wSetUpperBandwidth,wTimeOut,wStatus,wVariaStatus,wConnect,wEmission,wResetInterlock],name="Laser Control",label="Laser Control")
    viewer.window.add_dock_widget(container,name="Laser Control",add_vertical_stretch=True)
    napari.run()

[NeversayEverLin]

Thanks very much! I got it.

[tlambert03]

you’re welcome 😃