CODEWITHSUNDEEP
python-3.xpyqt5
Roberto
Roberto

Reputation: 2786

From 'a' to Qt.Key_A in PyQt5

I'm sure it's basic, but I've searched and came back empty-handed.
I'm using Python 3.6.4 and PyQt5.
I want to store some custom action keys in a config file (via configparser), and then retrieve them and respond to that keypress event.
So basically I'm looking for a function in PyQt5 that performs the reverse of chr(Qt.Key_A) - from a character, returns a Qt.Key_.
I couldn't help myself with Googling this time, and PyQt5 is huge to peruse. I was wondering if someone could point me to the right direction.
I could use a dict, but I'm sure there must be a function that does it - I'm just not finding it.

Upvotes: 1

Views: 984

Answers (2)

Guimoute
Guimoute

Reputation: 4629

If we are talking about alphanumeric keys only, getattr(Qt, f"Key_{key.upper()}" should work.

from PyQt5.QtCore import Qt

def string_to_key_converter(s):
    attribute = f"Key_{s.upper()}"
    if hasattr(Qt, attribute):
        return getattr(Qt, attribute)
    else:
        raise ValueError(f"Key {s} is invalid or unsupported.")

> string_to_key_converter("a") is Qt.Key_A
>>> True

Upvotes: 0

Roberto
Roberto

Reputation: 2786

My solution was to store the keys as ASCII code with ord(), since they can be directly compared to Qt.Key_ objects: 

from PyQt5.QtCore import Qt
ord('A') == Qt.Key_A
Out[2]: True

Upvotes: 1

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