[英]How to simply update a Table in a PyQt GUI?
我想用 Qt-Designer 創建我的 GUI 的基本外觀,然后通過編碼添加功能。 也許已經存在問題,但讓我們 go 更進一步。
我通過 Qt 設計器創建的 GUI 由一個 4x4 表和一個按鈕組成。 當按下按鈕時,我想在表格的單元格中寫一些東西。
(當然,這在不使用 Qt 設計器的情況下尤其可行。但是對於未來,我想創建一些更難的 GUI。因此 Qt 設計器確實為像我這樣的新手節省了很多時間:))
圖形界面代碼是:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(686, 539)
self.widget = QtWidgets.QWidget(Form)
self.widget.setGeometry(QtCore.QRect(10, 60, 258, 223))
self.widget.setObjectName("widget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.widget)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setObjectName("verticalLayout")
self.tableWidget = QtWidgets.QTableWidget(self.widget)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(4)
self.tableWidget.setRowCount(4)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(2, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(3, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(2, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(3, item)
self.verticalLayout.addWidget(self.tableWidget)
self.pushButton = QtWidgets.QPushButton(self.widget)
self.pushButton.setObjectName("pushButton")
self.verticalLayout.addWidget(self.pushButton)
self.pushButton.clicked.connect(say_hello)
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
item = self.tableWidget.verticalHeaderItem(0)
item.setText(_translate("Form", "1"))
item = self.tableWidget.verticalHeaderItem(1)
item.setText(_translate("Form", "2"))
item = self.tableWidget.verticalHeaderItem(2)
item.setText(_translate("Form", "3"))
item = self.tableWidget.verticalHeaderItem(3)
item.setText(_translate("Form", "4"))
item = self.tableWidget.horizontalHeaderItem(0)
item.setText(_translate("Form", "A"))
item = self.tableWidget.horizontalHeaderItem(1)
item.setText(_translate("Form", "B"))
item = self.tableWidget.horizontalHeaderItem(2)
item.setText(_translate("Form", "C"))
item = self.tableWidget.horizontalHeaderItem(3)
item.setText(_translate("Form", "D"))
testitem=QtWidgets.QTableWidgetItem()
self.tableWidget.setItem(1, 0, testitem)
self.pushButton.setText(_translate("Form", "PushButton"))
self.pushButton.clicked.connect(say_hello(testitem))
def say_hello(testitem):
print("Hello you!")
testitem.setText("Hi")
GUI 從另一個文件中調用,如下所示:
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication
import sys
import GUI_PyQtn
class ExampleApp(QtWidgets.QWidget, GUI_PyQtn.Ui_Form):
def __init__(self, parent=None):
super(ExampleApp, self).__init__(parent)
self.setupUi(self)
def main():
app = QApplication(sys.argv)
form = ExampleApp()
form.show()
app.exec_()
if __name__ == '__main__':
main()
我對我的方法的想法是,創建 Cell object 並將其傳遞給 function“say_hello”。 如果 function 會在 Ui_Form Class 中,它甚至不會調用它一次。
在 class Ui_Form 中用 self 聲明 testitem
在 class Ui_Form 聲明 say_hello
通過 lambda 在 say_hello 中傳遞 testitem
在 retranslateUi 中不使用 click.connect()
就是這樣
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(686, 539)
self.widget = QtWidgets.QWidget(Form)
self.widget.setGeometry(QtCore.QRect(10, 60, 258, 223))
self.widget.setObjectName("widget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.widget)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setObjectName("verticalLayout")
self.tableWidget = QtWidgets.QTableWidget(self.widget)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(4)
self.tableWidget.setRowCount(4)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(2, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(3, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(2, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(3, item)
self.verticalLayout.addWidget(self.tableWidget)
self.pushButton = QtWidgets.QPushButton(self.widget)
self.pushButton.setObjectName("pushButton")
self.verticalLayout.addWidget(self.pushButton)
# declare testitem with self ih here
self.testitem=QtWidgets.QTableWidgetItem()
# pass testitem in say_hello
self.pushButton.clicked.connect(lambda: self.say_hello(self.testitem))
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
item = self.tableWidget.verticalHeaderItem(0)
item.setText(_translate("Form", "1"))
item = self.tableWidget.verticalHeaderItem(1)
item.setText(_translate("Form", "2"))
item = self.tableWidget.verticalHeaderItem(2)
item.setText(_translate("Form", "3"))
item = self.tableWidget.verticalHeaderItem(3)
item.setText(_translate("Form", "4"))
item = self.tableWidget.horizontalHeaderItem(0)
item.setText(_translate("Form", "A"))
item = self.tableWidget.horizontalHeaderItem(1)
item.setText(_translate("Form", "B"))
item = self.tableWidget.horizontalHeaderItem(2)
item.setText(_translate("Form", "C"))
item = self.tableWidget.horizontalHeaderItem(3)
item.setText(_translate("Form", "D"))
#self.testitem=QtWidgets.QTableWidgetItem()
self.tableWidget.setItem(1, 0, self.testitem)
#self.pushButton.setText(_translate("Form", "PushButton"))
#self.pushButton.clicked.connect(self.say_hello(testitem))
# say_hello in class
def say_hello(self, testitem):
testitem.setText('Hi')
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