[英]how to work signals from QTableWidget cell with cellWidget
我在 QTableWidget 上工作過,問題是如果單元格是由 QTableWidgetItem 設置的,則信號“itemChanged”運行良好,可以輕松獲取行/列/文本,但是如果單元格是由像 QLineEdit 這樣的 cellWidget 設置的,那么信號“itemChanged”不起作用, singal 'textChanged' 或來自 QLineEdit 本身的工作,但如果數百個 QLineEdit 太難了,是否可以像 itemChanged 一樣工作? 請幫忙,謝謝。
代碼如下:
import sys
from PyQt5.QtWidgets import *
class Table(QWidget):
def __init__(self):
super(Table, self).__init__()
self.initUI()
def initUI(self):
self.setWindowTitle("QTableWidget Example")
self.resize(400,300)
self.layout=QHBoxLayout()
self.TableWidget=QTableWidget(4,3)
self.TableWidget.setHorizontalHeaderLabels(['Nmae','Sex','Weight(kG)'])
# self.newItem=QTableWidgetItem('Jack')
# self.TableWidget.setItem(0,0,self.newItem)
# self.newItem=QTableWidgetItem('Male')
# self.TableWidget.setItem(0,1,self.newItem)
# self.newItem=QTableWidgetItem('160')
# self.TableWidget.setItem(0,2,self.newItem)
self.newItem=QLineEdit('Jack')
self.TableWidget.setCellWidget(0,0,self.newItem)
self.newItem.textChanged.connect(self.txtChange)
self.newItem=QLineEdit('Male')
self.TableWidget.setCellWidget(0,1,self.newItem)
self.newItem=QLineEdit('160')
self.TableWidget.setCellWidget(0,2,self.newItem)
self.layout.addWidget(self.TableWidget)
self.setLayout(self.layout)
self.TableWidget.itemChanged.connect(self.changeTest)
def changeTest(self,item):
# print('test')
print(item.text())
def txtChange(self,txt):
print(txt)
if __name__ == '__main__':
app=QApplication(sys.argv)
win=Table()
win.show()
sys.exit(app.exec_())
一種可能的解決方案是不使用 cellWidget 而是永久打開委托編輯器:
class StyledItemDelegate(QStyledItemDelegate):
def createEditor(self, parent, option, index):
return QLineEdit(parent)
class Table(QWidget):
def __init__(self):
super(Table, self).__init__()
self.initUI()
def initUI(self):
self.setWindowTitle("QTableWidget Example")
self.resize(400, 300)
self.tableWidget = QTableWidget(4, 3)
delegate = StyledItemDelegate(self)
self.tableWidget.setItemDelegate(delegate)
self.tableWidget.setHorizontalHeaderLabels(["Nmae", "Sex", "Weight(kG)"])
self.tableWidget.itemChanged.connect(self.changeTest)
lay = QHBoxLayout(self)
lay.addWidget(self.tableWidget)
it = QTableWidgetItem("Jack")
self.tableWidget.setItem(0, 0, it)
self.tableWidget.openPersistentEditor(it)
it = QTableWidgetItem("Male")
self.tableWidget.setItem(0, 1, it)
self.tableWidget.openPersistentEditor(it)
it = QTableWidgetItem("160")
self.tableWidget.setItem(0, 2, it)
self.tableWidget.openPersistentEditor(it)
def changeTest(self, item):
print(item.text())
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