Jog Pushbuttons Like Bind in Tkinter

Pinks32

I'm to create robot jog pushbuttons that once a PB is pressed will start a function (jog X+) and once the PB is released, will cause a stopjog function. I've tried using .pressed and .released (ref below) but those calls do not work. Any ideas on how to bind the function like in tkinter?

    # Check for Coords Jog pushbuttons
    if self.pushButton_Xplus.pressed:self.move_jog(text="X+")
    if self.pushButton_Xplus.released: self.move_stop

jsulm

@Pinks32 Please read https://wiki.qt.io/Qt_for_Python_Signals_and_Slots
There is an example how to connect a function to a signal:

import sys
from PySide2.QtWidgets import QApplication, QPushButton

def func():
 print("func has been called!")

app = QApplication(sys.argv)
button = QPushButton("Call func")
button.clicked.connect(func)
button.show()
sys.exit(app.exec_())

Pinks32

Thanks! I've done that on other PB's where only clicked is required. Here I want to run func: move_jog() when the PB is held down continuously and then run stop_jog() when that same PB is released after being pushed. The two lines of code above don't work, i.e. the .pressed does not start the move_jog() func.

JonB

@Pinks32
QPushButton.pressed/released are signals, needing to be connect()ed. In the code you show you are using them as though they were variables.

Pinks32

Thanks. I changed code to reflect a connect:
self.pushButton_J1plus.pressed.connect(lambda event:self.move_jog(text="J1+"))
self.pushButton_J1plus.released.connect(self.move_stop)

Seems the .pressed works ok, but the .released function doesn't work as expected, and doesn't get called. The jog & jog stop functions have worked w/tkinter so I'm ruling out the functions as any issue. Ideas?

jsulm

@Pinks32 said in Jog Pushbuttons Like Bind in Tkinter:

but the .released function doesn't work as expected

You mean self.move_stop is never called?

JonB

@Pinks32
As @jsulm asks, have you checked by connecting a print() statement lambda to the signal to verify whether it ever gets called?

Pinks32

Thanks for the advice. Placed print() statements in both move_jog & move_stop and sure enough move_stop was not getting called. There was a tkinter remanent left over in the move_stop module. Once removed, Now my jog PB's work as expected! Thanks again! Onto the next issue...

JonB

@Pinks32 said in Jog Pushbuttons Like Bind in Tkinter:

The jog & jog stop functions have worked w/tkinter so I'm ruling out the functions as any issue. Ideas?

There was a tkinter remanent left over in the move_stop module. Once removed, Now my jog PB's work as expected!

:)

Don't make assumptions. Put in debug messages.