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Asked:2020-01-08 21:12:34 +0000 UTC2020-01-08 21:12:34 +0000 UTC

如何判断窗户是否打开？

  • 772

有窗户main和 win如果窗口打开，如果它关闭，则win写入控制台。"окно открыто""окно закрыто"

怎么做？

代码示例：

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_main(object):
    def setupUi(self, main):
        main.setObjectName("main")
        main.resize(400, 300)
        self.label = QtWidgets.QLabel(main)
        self.label.setGeometry(QtCore.QRect(20, 20, 111, 41))
        self.label.setStyleSheet("font: 87 16pt \"Arial Black\";")
        self.label.setObjectName("label")
        self.pushButton_1 = QtWidgets.QPushButton(main)
        self.pushButton_1.setGeometry(QtCore.QRect(10, 10, 50, 31))
        self.pushButton_1.setStyleSheet("font: 87 14pt \"Arial Black\";")
        self.pushButton_1.setObjectName("pushButton")
        self.retranslateUi(main)
        QtCore.QMetaObject.connectSlotsByName(main)

    def retranslateUi(self, main):
        _translate = QtCore.QCoreApplication.translate
        main.setWindowTitle(_translate("main", "Form"))
        self.label.setText(_translate("main", "main"))
        self.pushButton_1.setText(_translate("main", "нажать"))

class Ui_window_1(object):
    def setupUi(self, window_1):
        window_1.setObjectName("window_1")
        window_1.resize(400, 300)
        self.label = QtWidgets.QLabel(window_1)
        self.label.setGeometry(QtCore.QRect(20, 20, 111, 41))
        self.label.setStyleSheet("font: 87 16pt \"Arial Black\";")
        self.label.setObjectName("label")

        self.retranslateUi(window_1)
        QtCore.QMetaObject.connectSlotsByName(window_1)

    def retranslateUi(self, window_1):
        _translate = QtCore.QCoreApplication.translate
        window_1.setWindowTitle(_translate("window_1", "Form"))
        self.label.setText(_translate("window_1", "window_1"))

class Win(QtWidgets.QWidget, Ui_window_1):
    def __init__(self, parent=None):
        super(Win, self).__init__(parent)

class Main(QtWidgets.QWidget, Ui_main):
    def __init__(self, parent=None):
        super(Main, self).__init__(parent)
    b = #определение открыто ли окно или нет
    if b == True:
        print("Окно открыто")
    else:
        print("Окно закрыто")
        self.setupUi(self)
        self.pushButton_1.clicked.connect(self.Win_f)
    def Win_f(self):
        self.wmain = Win()
        self.wmain.show()
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv) 
    w = Main()
    w.show()

    sys.exit(app.exec_())
python

1 个回答

  1. Best Answer

    我不太明白你想要什么？Main您想在构建窗口以进一步显示时开始检查主窗口构造函数中的某些内容吗？这是不对的。

    您需要阅读有关QEvent Class. 该类QEvent是所有事件类的基类。事件对象包含事件参数。 https://doc.qt.io/qt-5/qevent.html#Type-enum

    点击窗户，看看发生了什么。

    from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_main(object):
    def setupUi(self, main):
        main.setObjectName("main")
        main.resize(400, 300)
        self.label = QtWidgets.QLabel(main)
        self.label.setGeometry(QtCore.QRect(20, 20, 111, 41))
        self.label.setStyleSheet("font: 87 16pt \"Arial Black\";")
        self.label.setObjectName("label")
        self.pushButton_1 = QtWidgets.QPushButton(main)
        self.pushButton_1.setGeometry(QtCore.QRect(10, 10, 50, 31))
        self.pushButton_1.setStyleSheet("font: 87 14pt \"Arial Black\";")
        self.pushButton_1.setObjectName("pushButton")
        self.retranslateUi(main)
        QtCore.QMetaObject.connectSlotsByName(main)

    def retranslateUi(self, main):
        _translate = QtCore.QCoreApplication.translate
        main.setWindowTitle(_translate("main", "Form"))
        self.label.setText(_translate("main", "main"))
        self.pushButton_1.setText(_translate("main", "нажать"))

class Ui_window_1(object):
    def setupUi(self, window_1):
        window_1.setObjectName("window_1")
        window_1.resize(300, 200)
        self.label = QtWidgets.QLabel(window_1)
        self.label.setGeometry(QtCore.QRect(20, 20, 111, 41))
        self.label.setStyleSheet("font: 87 16pt \"Arial Black\";")
        self.label.setObjectName("label")

        self.retranslateUi(window_1)
        QtCore.QMetaObject.connectSlotsByName(window_1)

    def retranslateUi(self, window_1):
        _translate = QtCore.QCoreApplication.translate
        window_1.setWindowTitle(_translate("window_1", "Form"))
        self.label.setText(_translate("window_1", "window_1"))

class Win(QtWidgets.QWidget, Ui_window_1):
    def __init__(self, parent=None):
        super(Win, self).__init__(parent)
        self.setupUi(self)                                         # +++
        self.layout = QtWidgets.QVBoxLayout(self)                  # +++
        self.layout.addWidget(self.label)                          # +++

class Main(QtWidgets.QWidget, Ui_main):
    def __init__(self, parent=None):
        super(Main, self).__init__(parent)

        self.setupUi(self)
        self.setWindowTitle("Main")
        self.pushButton_1.clicked.connect(self.Win_f)

        layout = QtWidgets.QVBoxLayout(self)
        layout.addWidget(self.label) 
        layout.addWidget(self.pushButton_1)

        self.wmain = Win()
        self.wmain.setWindowTitle("Win")
        self.wmain.btn = QtWidgets.QPushButton("Открыть Main", self.wmain, clicked=self.showMain)
        self.wmain.layout.addWidget(self.wmain.btn)

# ???       b = #определение открыто ли окно или нет


    def event(self, event):
        if event.type() == QtCore.QEvent.WindowActivate:
            print(f"Oкно стало активным; (WindowActivate).")
        elif event.type() == QtCore.QEvent.WindowDeactivate:
            print(f"Oкно стало НЕактивным; (WindowDeactivate).") 
        elif event.type() == QtCore.QEvent.Close:
            print(f"Oкно закрытo (QCloseEvent).") 

        return QtWidgets.QWidget.event(self, event)

    def showMain(self):
        self.show()

    def Win_f(self):
        self.wmain.show()


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv) 
    w = Main()
    w.show()
    sys.exit(app.exec_())

    在此处输入图像描述

    • 2

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