Python 如何在cellWidget中访问QLineEdit?
我尝试访问QLineEdit,它位于QTableWidget的单元格内,以便能够向每个单元格发送.text()值,但我不知道如何访问QLineEdit的.text()属性: 这就是我要找的:Python 如何在cellWidget中访问QLineEdit?,python,python-3.x,pyqt,pyqt5,qtablewidget,Python,Python 3.x,Pyqt,Pyqt5,Qtablewidget,我尝试访问QLineEdit,它位于QTableWidget的单元格内,以便能够向每个单元格发送.text()值,但我不知道如何访问QLineEdit的.text()属性: 这就是我要找的: for row in range(self.Table.rowCount()): for column in range(self.Table.columnCount()): widget = self.Table.item(row,column) if isinst
for row in range(self.Table.rowCount()):
for column in range(self.Table.columnCount()):
widget = self.Table.item(row,column)
if isinstance(widget,QLineEdit)
print(widget.objectName())
widget.setText("text")
list.append(widget.objectName())
但没用我希望你能帮我,
我附上完整的代码
from PyQt5.QtWidgets import QMainWindow,QApplication,QTableWidget,QTableWidgetItem,QWidgetItem,QLabel,QLineEdit,QVBoxLayout,QWidget
class Main(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.Table = QTableWidget(self)
self.Table.resize(400,300)
self.Table.setColumnCount(5)
self.Table.setRowCount(5)
self.listw = []
for row in range(3):
for column in range(4):
widget = QWidget()
layout = QVBoxLayout()
label = QLabel()
label.setText("row "+str(row))
line = QLineEdit()
line.setPlaceholderText("text")
layout.addWidget(label)
layout.addWidget(line)
widget.setLayout(layout)
self.Table.setCellWidget(row,column,widget)
self.Table.resizeRowsToContents()
for row in range(self.Table.rowCount()):
for column in range(self.Table.columnCount()):
widget = self.Table.item(row,column)
if isinstance(widget,QLineEdit):
print(widget.objectName())
widget.setText("some text")
self.listw.append(widget.objectName())
app = QApplication([])
m = Main()
m.show()
m.resize(800,600)
app.exec_()
如果要使用setCellWidget方法访问小部件集,则必须使用cellWidget()方法,但该方法将获取容器小部件而不是QLineEdit,因此如果要获取QLineEdit,可以使用findChild方法,但另一种方法是创建一个自定义小部件,其中包含小部件,并允许您获取每个元素:
class Widget(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self._label = QLabel()
self._line = QLineEdit(placeholderText="text")
lay = QVBoxLayout(self)
lay.addWidget(self.label)
lay.addWidget(self.line)
@property
def label(self):
return self._label
@property
def line(self):
return self._line
class Main(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.Table = QTableWidget(self)
self.Table.resize(400, 300)
self.Table.setColumnCount(5)
self.Table.setRowCount(5)
self.listw = []
for row in range(3):
for column in range(4):
widget = Widget()
widget.label.setText("row " + str(row))
self.Table.setCellWidget(row, column, widget)
self.Table.resizeRowsToContents()
for row in range(self.Table.rowCount()):
for column in range(self.Table.columnCount()):
widget = self.Table.cellWidget(row, column)
if isinstance(widget, Widget):
widget.line.setText("some text")
更新:
使用findChild:
for row in range(self.Table.rowCount()):
for column in range(self.Table.columnCount()):
widget = self.Table.cellWidget(row, column)
if isinstance(widget, QWidget):
lineedit = widget.findChild(QLineEdit)
if lineedit is not None:
lineedit.setText("some text")
如果要使用setCellWidget方法访问小部件集,则必须使用cellWidget()方法,但该方法将获取容器小部件而不是QLineEdit,因此如果要获取QLineEdit,可以使用findChild方法,但另一种方法是创建一个自定义小部件,其中包含小部件,并允许您获取每个元素:
class Widget(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self._label = QLabel()
self._line = QLineEdit(placeholderText="text")
lay = QVBoxLayout(self)
lay.addWidget(self.label)
lay.addWidget(self.line)
@property
def label(self):
return self._label
@property
def line(self):
return self._line
class Main(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.Table = QTableWidget(self)
self.Table.resize(400, 300)
self.Table.setColumnCount(5)
self.Table.setRowCount(5)
self.listw = []
for row in range(3):
for column in range(4):
widget = Widget()
widget.label.setText("row " + str(row))
self.Table.setCellWidget(row, column, widget)
self.Table.resizeRowsToContents()
for row in range(self.Table.rowCount()):
for column in range(self.Table.columnCount()):
widget = self.Table.cellWidget(row, column)
if isinstance(widget, Widget):
widget.line.setText("some text")
更新:
使用findChild:
for row in range(self.Table.rowCount()):
for column in range(self.Table.columnCount()):
widget = self.Table.cellWidget(row, column)
if isinstance(widget, QWidget):
lineedit = widget.findChild(QLineEdit)
if lineedit is not None:
lineedit.setText("some text")