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python - 动态添加小部件python

问题描述

我有这两个 python 脚本，我想将它们合并到一个窗口中。基本上，在选中按钮时将小部件添加到窗口。这是主窗口

from PyQt5 import QtCore, QtGui, QtWidgets

class MainWindow(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(400, 300)
        self.checkBox = QtWidgets.QCheckBox(Form)
        self.checkBox.setGeometry(QtCore.QRect(40, 40, 171, 21))
        self.checkBox.setObjectName("checkBox")
        // when checkbox is true add widget

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

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.checkBox.setText(_translate("Form", "render frame range"))

这是我要添加的小部件

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(400, 300)
        self.lineEdit = QtWidgets.QLineEdit(Form)
        self.lineEdit.setGeometry(QtCore.QRect(20, 120, 113, 20))
        self.lineEdit.setObjectName("lineEdit")
        self.lineEdit_2 = QtWidgets.QLineEdit(Form)
        self.lineEdit_2.setGeometry(QtCore.QRect(200, 120, 113, 20))
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.label = QtWidgets.QLabel(Form)
        self.label.setGeometry(QtCore.QRect(140, 120, 47, 13))
        self.label.setObjectName("label")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setGeometry(QtCore.QRect(30, 160, 131, 31))
        self.pushButton.setObjectName("pushButton")

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

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.label.setText(_translate("Form", "to"))
        self.pushButton.setText(_translate("Form", "Render Sequence"))

我知道我需要将小部件作为主窗口的父级，但我不知道如何。当复选框为真时，我希望添加小部件。如果复选框为假，我希望删除小部件。我见过 c++ 的例子，但不是 python 的例子。如果有人可以帮助我或指出我正确的方向，那就太好了。

标签： pythonpyqtpyqt5

解决方案

您不需要添加/删除小部件。您可以根据复选框的状态隐藏或显示它。

将信号连接QCheckBox::clicked到插槽QWidget::setVisible：

class MainWindow(QWidget):
    def __init__(self, parent=None, **kwargs):
        super(MainWindow, self).__init__(parent, **kwargs)
        self.resize(400, 300)
        self.checkBox = QCheckBox("Hide/show", self)
        self.checkBox.setGeometry(QRect(40, 40, 171, 21))

        self.widgetToManage = QLabel("Hello world!", self)
        self.widgetToManage.hide() # the checkbox is unchecked by default.

        # When the checkbox is checked, the widget is visible.
        self.checkBox.clicked.connect(self.widgetToManage.setVisible)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MainWindow()
    app.setActiveWindow(window) 
    window.show()
    sys.exit(app.exec_())

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