PyQt6的Qt模块替代品

Question

我只是将应用程序从PyQt5迁移到PyQt6。我知道Qt模块在Qt6中已被删除。我有像qt。aligncenter, qt。toolbuttontextundericon, qt。lefttoolbararea这样的东西，它们不再工作了。Qt6中是否有此功能的替代方案?

Answer 1

Qt模块只存在于PyQt5中(不在Qt5中)，它允许访问任何子模块的任何类或元素，例如:

$ python
>>> from PyQt5 import Qt
>>> from PyQt5 import QtWidgets
>>> assert Qt.QWidget == QtWidgets.QWidget

该模块与属于QtCore模块的Qt命名空间不同，所以如果你想访问Qt. aligncenter，那么你必须从QtCore导入Qt:

import sys
from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QApplication, QLabel

def main():
    app = QApplication(sys.argv)
    w = QLabel()
    w.resize(640, 498)
    w.setAlignment(Qt.Alignment.AlignCenter)
    w.setText("Qt is awesome!!!")
    w.show()
    app.exec()

if __name__ == "__main__":
    main()

from PyQt6.QtCore import Qt
from PyQt6.QtGui import QIcon
from PyQt6.QtWidgets import QApplication, QMainWindow, QStyle, QToolBar

def main():
    import sys
    app = QApplication(sys.argv)
    toolbar = QToolBar()
    toolbar.setToolButtonStyle(Qt.ToolButtonStyle.ToolButtonTextUnderIcon)
    icon = app.style().standardIcon(QStyle.StandardPixmap.SP_DesktopIcon)
    toolbar.addAction(icon, "desktop")
    w = QMainWindow()
    w.addToolBar(Qt.ToolBarAreas.LeftToolBarArea, toolbar)
    w.show()
    sys.exit(app.exec())

if __name__ == "__main__":
    main()

Answer 2

目前，AlignCenter和其他可以在AlignmentFlag enum下找到:

from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QPushButton, QVBoxLayout
def create_widget():
    layout = QVBoxLayout()
    button = QPushButton('Cancel')
    layout.setAlignment(Qt.AlignmentFlag.AlignCenter)
    layout.addWidget(button)