1. There is an existing screen which shows this data. Use this one as your starting point.
2. see 1. in general: everything you take from other classes
3. enigma.py

i'm new to this as well, but i learned recently that converters and renderers are not called directly from the plugin but invoked indirectly from the skin somehow. so, this is not what you are looking for.
doc for the enigma2 classes can be found here: https://dream.reichholf.net/pydoc/html/hierarchy.html

Zitat

momi133 schrieb:
I want to know which function shows this Info like following term for screen width size : getDesktop(0).size().width()
I want this Info for writing in python code of plugin and assign out of function to a variable.

I hope i have understand you correctly

You can use this if your function is from a class:

class Classname(...):
	def __init__(self, ...):
             self.DesktopWidth = getDesktop(0).size().width()


        def function1():
            newDesktopWidth = self.DesktopWidth -200

Then you can use self.DesktopWidth in other functions of the class.

If you have a Plugin-Function without a class, then you can use a global variable:

DesktopWidth = 0


def function1():
   global DesktopWidth


   DesktopWidth = getDesktop(0).size().width()


def function2():
   global DesktopWidth


   newDesktopWidth = DesktopWidth - 200

Global variables should be avoided whenever possible. Pass variables from one class to an other as parameter