在QMessage@R_6_2419@此方法中调整尺寸的情况下exec_()，因此可能的解决方案是QTimer.singleShot()在显示后的瞬间使用几何形状进行更改。
from functools import partial
from PyQt5 import QtCore, QtWidgets
def center(window):
# https://wiki.qt.io/How_to_Center_a_Window_on_the_Screen
window.setGeometry(
QtWidgets.QStyle.alignedRect(
QtCore.Qt.LeftToRight,
QtCore.Qt.AlignCenter,
window.size(),
QtWidgets.qApp.desktop().availableGeometry(),
)
)
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.btn_warning = QtWidgets.QPushButton(
"Open QMessage@R_6_2419@", clicked=self.open_qmessage@R_6_2419@
)
lay = QtWidgets.QV@R_6_2419@Layout(self)
lay.addWidget(self.btn_warning)
center(self)
@QtCore.pyqtSlot()
def open_qmessage@R_6_2419@(self):
info@R_6_2419@ = QtWidgets.QMessage@R_6_2419@()
info@R_6_2419@.setIcon(QtWidgets.QMessage@R_6_2419@.Warning)
info@R_6_2419@.setWindowTitle("Warning")
info@R_6_2419@.setText("The XXX Already exist in the current Directory")
wrapper = partial(center, info@R_6_2419@)
QtCore.QTimer.singleShot(0, wrapper)
info@R_6_2419@.exec_()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
对于QInputDialog，QInputDialog :: getText（）方法是静态的，因此“ self.cuadro”对象不是窗口，因为该窗口是在该方法中创建的。如果将父级传递给getText（），则默认情况下它将相对于此居中。
因此，如果QMainWindow居中并假定QMainWindow是自身，则无需修改任何内容。
相反，如果父母不在屏幕上居中，则有两种可能的解决方案：
不要使用静态方法并通过QInputDialog实例实现逻辑：
from functools import partial from PyQt5 import QtCore, QtWidgets
def center(window): # https://wiki.qt.io/How_to_Center_a_Window_on_the_Screen
window.setGeometry(
QtWidgets.QStyle.alignedRect(
QtCore.Qt.LeftToRight,
QtCore.Qt.AlignCenter,
window.size(),
QtWidgets.qApp.desktop().availableGeometry(),
)
)
class Widget(QtWidgets.QWidget): def (self, parent=None): super().(parent)
self.btn_inputdialog = QtWidgets.QPushButton(
"Open QInputDialog", clicked=self.open_qinputdialog
)
lay = QtWidgets.QV@R_6_2419@Layout(self)
lay.addWidget(self.btn_inputdialog)
center(self)
@QtCore.pyqtSlot()
def open_qinputdialog(self):
dialog = QtWidgets.QInputDialog(self)
dialog.setWindowTitle("New File")
dialog.setLabelText("File Name:")
dialog.setTextEchoMode(QtWidgets.QLineEdit.Normal)
dialog.setTextValue("")
wrapper = partial(center, dialog)
QtCore.QTimer.singleShot(0, wrapper)
text, okPressed = (
dialog.textValue(),
dialog.exec_() == QtWidgets.QDialog.Accepted,
)
if okPressed and text:
print(text)
if == “”: import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
继续使用静态方法，并使用findChildren（）获取窗口
from functools import partial from PyQt5 import QtCore, QtWidgets
def center(window): # https://wiki.qt.io/How_to_Center_a_Window_on_the_Screen
window.setGeometry(
QtWidgets.QStyle.alignedRect(
QtCore.Qt.LeftToRight,
QtCore.Qt.AlignCenter,
window.size(),
QtWidgets.qApp.desktop().availableGeometry(),
)
)
class Widget(QtWidgets.QWidget): def (self, parent=None): super().(parent)
self.btn_inputdialog = QtWidgets.QPushButton(
"Open QInputDialog", clicked=self.open_qinputdialog
)
lay = QtWidgets.QV@R_6_2419@Layout(self)
lay.addWidget(self.btn_inputdialog)
center(self)
@QtCore.pyqtSlot()
def open_qinputdialog(self):
parent = self
dialogs = parent.findChildren(QtWidgets.QInputDialog)
def onTimeout():
dialog, *_ = set(parent.findChildren(QtWidgets.QInputDialog)) - set(dialogs)
center(dialog)
QtCore.QTimer.singleShot(0, onTimeout)
text, okPressed = QtWidgets.QInputDialog.getText(
parent, "New File", "File Name:", QtWidgets.QLineEdit.Normal, ""
)
if okPressed and text:
print(text)
if == “”: import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
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