Hy

I want to pass some info (username, passwort and an url) to a DataEngine.

If I undersood the API[1] right, I will have to implement serviceForSource() in my DataEngine and return an instance of a subclass of Plasma.Service.

My problem:
If I create a subclass of Plasma.Service and try to instantiate it I get a runtime exception:

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TypeError: PyKDE4.plasma.Service cannot be instantiated or sub-classed


Sombody got a solution for this problem?

thx


- [1] http://api.kde.org/pykde-4.2-api/plasma ... rvice.html

You understood correctly. I do not know why that message appeared though, are you sure that your function definition returns a pointer?

I get the error when I instantiate my service-class:

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class MyService(Plasma.Service):
    def __init__(self, message):
        print "print ", message


I also tried to overwrite __init__(..) with different numbers of arguments (without luck).

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    def serviceForSource(self, sourceName):
        src = MyService("test")
        print "--- ", src
        return src


The error is thrown before the "print" statement.

...are you sure that your function definition returns a pointer?

Pointer in python - how would you do that?

Thanks for your reply

Unfortunately I do not know much about Python, but I do know that type instantiation errors usually occur when the type is protected like Plasma::Service is in C++.

I wrote a bug-report: https://bugs.kde.org/show_bug.cgi?id=209051 ...