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python - 单击 PyQt5 中的 PushButton 时如何读取 QLineEdit 和 QCheckBox 值？

问题描述

我试图使用下面的代码，但在执行时它说“Python 已停止工作”并重新启动 shell。基本上我试图在单击按钮时从 QLineEdit （用户输入）值中读取文本，但它失败了。

class Display(QWidget):    
    def __init__(self):
        super().__init__()
        self.initUI()


    def initUI(self):
        search_dir_label = QLabel('Directory to Search')
        search_dir_te = QLineEdit()
        search_dir_layout = QHBoxLayout(self)
        search_dir_layout.addWidget(search_dir_label)
        search_dir_layout.addWidget(search_dir_te)
        vert_layout1.addLayout(search_dir_layout)

        search_button = QPushButton('Search')
        search_button.clicked.connect(self.sendval)   
        cancel_button = QPushButton('Cancel')
        search_cancel_layout = QHBoxLayout(self)
        search_cancel_layout.addWidget(search_button)
        search_cancel_layout.addWidget(cancel_button)
        search_cancel_layout.setAlignment(Qt.AlignCenter)
        vert_layout1.addLayout(search_cancel_layout)

    def sendval(self):
        print(self.search_dir_te.text)

标签： pythonpyqt5

解决方案

您只需更改search_dir_te为self.search_dir_teininitUI()即可在其他功能中访问它。text()另外，添加括号以调用方法sendval()

def initUI(self):
    search_dir_label = QLabel('Directory to Search')
    self.search_dir_te = QLineEdit()
    search_dir_layout = QHBoxLayout(self)
    search_dir_layout.addWidget(search_dir_label)
    search_dir_layout.addWidget(self.search_dir_te)
    vert_layout1.addLayout(search_dir_layout)

    search_button = QPushButton('Search')
    search_button.clicked.connect(self.sendval)   
    cancel_button = QPushButton('Cancel')
    search_cancel_layout = QHBoxLayout(self)
    search_cancel_layout.addWidget(search_button)
    search_cancel_layout.addWidget(cancel_button)
    search_cancel_layout.setAlignment(Qt.AlignCenter)
    vert_layout1.addLayout(search_cancel_layout)

def sendval(self):
    print(self.search_dir_te.text())

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