PYQT：选择某些下拉值时，使Qlabel消失了

Question

我有一个 QDialog，它有几个 QLineEdits 和一个下拉列表 (QComboBox)，其中有 3 个条目：通过、通过附加评论和失败。

每当用户选择“失败”或“通过附加评论”时，我都会加入额外的 QLineEdit 以供评论。如果选择“通过”，则不会添加任何字段。我设法实现了显示额外评论字段的部分，每当两个条目之一被选中时，通过使该字段在开始时不可见，并且一旦条目被选择，它就会变得可见，但我无法做到只要选择“通过”，字段就会再次消失。这里有一些与之相关的片段：

        self.resultLabel = QLabel("Result:", self)
        #define dropdown
        self.resultCombo = QComboBox(self)
        self.resultCombo.addItem("passed")
        self.resultCombo.addItem("passed with additional comments")
        self.resultCombo.addItem("failed")
    
        #define the extra comment label and input field
        self.extraCommentLabel = QLabel("Comment",self)
        self.extraCommentLabel.setVisible(False)
        self.extraCommentLine = QLineEdit(self)
        self.extraCommentLine.setVisible(False)
        self.resultCombo.currentIndexChanged.connect(self.combo_value)
    
        #define layout
        self.resultLayout = QHBoxLayout()
        self.resultLayout.addWidget(self.resultLabel)
        self.resultLayout.addWidget(self.resultCombo)
        self.windowLayout = QVBoxLayout()
        self.windowLayout.addLayout(self.resultLayout)
        self.windowLayout.addLayout(self.extraCommentLayout)
    
     def combo_value(self):
        selected_option = self.resultCombo.currentText()
        print str(selected_option)
        if selected_option is "passed with additional comments" or "failed":
              self.extraCommentLine.setVisible(True)
              self.extraCommentLabel.setVisible(True)
        elif selected_option is "passed":
              self.extraCommentLabel.setVisible(False)

我猜我的 def combo_value 缺少某些东西但不确定是什么。感谢任何提示！

Answer 1

我觉得你不见了self.extraCommentLine.setVisible (False)

import sys
from PyQt5.Qt import *


class Window(QWidget):
    def __init__(self):
        super().__init__()
 
        self.resultLabel = QLabel("Result:", self)

        self.resultCombo = QComboBox(self)
        self.resultCombo.addItem("passed")
        self.resultCombo.addItem("passed with additional comments")
        self.resultCombo.addItem("failed")
        self.resultCombo.currentIndexChanged.connect(self.combo_value)
    
        self.extraCommentLabel = QLabel("Comment", self)
        self.extraCommentLabel.setVisible(False)
        
        self.extraCommentLine = QLineEdit(self)
        self.extraCommentLine.setVisible(False)

        self.windowLayout = QGridLayout(self)       
        self.windowLayout.addWidget(self.extraCommentLabel, 0, 1)
        self.windowLayout.addWidget(self.resultLabel, 1, 0)
        self.windowLayout.addWidget(self.extraCommentLine, 1, 1)
        self.windowLayout.addWidget(self.resultCombo, 1, 2)
    
    def combo_value(self):
        selected_option = self.resultCombo.currentText()
#        if selected_option is "passed with additional comments" or "failed":
        if selected_option != "passed":
          self.extraCommentLine.setVisible(True)
          self.extraCommentLabel.setVisible(True)
#        elif selected_option is "passed":
        elif selected_option == "passed":
          self.extraCommentLabel.setVisible(False)
          self.extraCommentLine.setVisible(False)                              # +
       
        
if __name__ == "__main__":
    app = QApplication(sys.argv)
    w = Window()
    w.resize(305, 70)
    w.show()
    sys.exit(app.exec_())

PYQT：选择某些下拉值时，使Qlabel消失了

PyQt: make QLabel disappear when certain drop-down value is chosen

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