Re: PyDM setting alarm with PVView example

[Hugo Slepicka via Tech-talk <tech-talk at aps.anl.gov>]

Hi Rute,

By pvview.py do you mean this project here: https://github.com/BCDA-APS/pvview ?

The alarm information will be visually available if you use the following at your application:

from pydm.utilities.stylesheet import apply_stylesheet

apply_stylesheet(None, my_display)

In which None will make it load the PyDM default stylesheet and my_display is your widget or QApplication in which the stylesheet will be applied and cascaded to child widgets.

More info here: https://github.com/slaclab/pydm/blob/master/pydm/utilities/stylesheet.py#L29

You get the behavior via PyDM launcher as it does that for you but since you are using it at your own application it is missing the stylesheet to display the alarm at the widgets.

You can have your own stylesheet defining how the widgets should look like based on Alarm. Here is the default stylesheet as an example: https://github.com/slaclab/pydm/blob/master/pydm/default_stylesheet.qss

Please let me know if that works for you.

Cheers,

Hugo

On Fri, Mar 13, 2020 at 12:06 PM Rute Mendes via Tech-talk <tech-talk at aps.anl.gov> wrote:

Hello! 

I've the latest version of PyDM installed and I was trying PVView for testing the possibility of using PyDM's EPICS CA aware widgets within a different application. Only that the following line doesn't work for me,

On pvview.py module,

widget.useAlarmState = True

I can only have the alarm  active when using PyDM launcher.

Am I missing something?

Do I have to follow the "note" requirements, referred on the link below, to use a PyDM widget on my code, by including PyDMApplication?

https://slaclab.github.io/pydm-tutorial/intro/launcher.html

Thank you for attention.

I hope I can have your help.

Kind regards,

Rute