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Изворен канал @pythonotes · Post #45 · 2 мар.
В фреймворке PyQt (и PySide тоже) часто встречается настройка чего-либо с помощью так называемых флагов. widget.setWindowFlags(Qt.Window) Взаимодействие нескольких флагов делается с помощью бинарных (или побитовых) операторов. Несколько флагов можно указать с помощью оператора "|" list_item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsEnabled) исключить флаг из уже имеющегося набора можно так list_item.setFlags(list_item.flags() ^ Qt.ItemIsEnabled) Добавить новый флаг к имеющимся можно так list_item.setFlags(list_item.flags() | Qt.ItemIsEnabled) А проверка наличия делается так is_enabled = item.flags() & Qt.ItemIsEnabled > 0 Почему именно так? Всё дело в том как именно работают побитовые операторы. Но об этом в следующем посте. #qt
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Пребарај: #mandalas
@coloringbookspdf · Post #240 · 14.07.2024 г., 20:35
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@coloringbookspdf · Post #250 · 14.07.2024 г., 21:15
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@coloringbookspdf · Post #387 · 25.07.2024 г., 15:00
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@coloringbookspdf · Post #307 · 15.07.2024 г., 15:37
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@coloringbookspdf · Post #327 · 15.07.2024 г., 16:06
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@coloringbookspdf · Post #158 · 14.07.2024 г., 00:13
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@coloringbookspdf · Post #148 · 14.07.2024 г., 00:01
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@coloringbookspdf · Post #128 · 13.07.2024 г., 23:35
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@coloringbookspdf · Post #108 · 13.07.2024 г., 22:43
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@coloringbookspdf · Post #98 · 13.07.2024 г., 22:27
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@coloringbookspdf · Post #337 · 15.07.2024 г., 18:26
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