我在用pyqt实现按下参数输入按钮后，出现一个表格，然后在表格中输入数据。请问如何在叉掉表格弹出框后，再次点击按钮还显示之前输入的数据？如何用其中三个表格中的数据来算出第四个数？
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
################################################
#######创建主窗口
################################################
class FirstMainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setWindowTitle('主界面')
self.resize(1200, 700)
###### 创建界面 ######
self.centralwidget = QWidget()
self.setCentralWidget(self.centralwidget)
self.Layout = QVBoxLayout(self.centralwidget)
# 设置按钮
self.pushButton1 = QPushButton(self)
self.pushButton1.setText('软件使用指导')
self.pushButton1.move(10, 10)
self.pushButton2 = QPushButton(self)
self.pushButton2.setText('参数输入')
self.pushButton2.move(300, 10)
self.pushButton3 = QPushButton(self)
self.pushButton3.setText('参数评定')
self.pushButton3.move(500, 10)
self.pushButton4 = QPushButton(self)
self.pushButton4.setText('保存')
self.pushButton4.move(750, 10)
self.pushButton5 = QPushButton(self)
self.pushButton5.setText('调用')
self.pushButton5.move(1000, 10)
self.pushButton6 = QPushButton(self)
self.pushButton6.setText('导入图片')
self.pushButton6.move(10, 50)
self.pushButton7 = QPushButton(self)
self.pushButton7.setText('图像处理')
self.pushButton7.move(10, 250)
self.pushButton8 = QPushButton(self)
self.pushButton8.setText('图像处理')
self.pushButton8.move(10, 450)
###### 三个按钮事件 ######
self.pushButton1.clicked.connect(self.on_pushButton1_clicked)
self.pushButton2.clicked.connect(self.on_pushButton2_clicked)
# 按钮一：打开主界面
def on_pushButton1_clicked(self):
text = self.sender().text()
if text == '软件使用指导':
QMessageBox.about(self, '使用指导', '按下参数输入可以输入原始参数，便于对比数据；按下保存按钮可以保存分析后的数据，按下调用可以调出之前')
# 按钮二：打开对话框
def on_pushButton2_clicked(self):
the_dialog = TestdemoDialog()
if the_dialog.exec_() == QDialog.Accepted:
pass
# 按钮二：打开对话框
def on_pushButton3_clicked(self):
the_dialog = QFileDialogDemo()
if the_dialog.exec_() == QWidget.Accepted:
pass
################################################
#######b表格框
################################################
class TestdemoDialog(QDialog):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
hhbox = QHBoxLayout() # 横向布局
tableWidget = QTableWidget() # 创建一个表格
tableWidget.setRowCount(1)
tableWidget.setColumnCount(4) # 1行5列
tableWidget.setHorizontalHeaderLabels(['▲d2', '▲d', '▲α/2', '▲P'])
tableWidget.setVerticalHeaderLabels(['原始参数'])
# 表头
hhbox.addWidget(tableWidget) # 把表格加入布局
self.setLayout(hhbox) # 创建布局
self.setWindowTitle("原始参数")
self.resize(725, 90)
self.show()
################################################
#######图片框
################################################
class QFileDialogDemo(QWidget):
def __init__(self):
super(QFileDialogDemo,self).__init__()
self.initUI()
def initUI(self):
layout = QVBoxLayout()
self.button1 = QPushButton('加载图片')
self.button1.clicked.connect(self.loadImage)
layout.addWidget(self.button1)
self.imageLabel = QLabel()
layout.addWidget(self.imageLabel)
self.setLayout(layout)
self.setWindowTitle('文件对话框演示 ')
def loadImage(self):
fname,_ = QFileDialog.getOpenFileName(self,'打开文件','.','图像文件(*.jpg *.png)')
self.imageLabel.setPixmap(QPixmap(fname))
def loadText(self):
dialog = QFileDialog()
dialog.setFileMode(QFileDialog.AnyFile)
dialog.setFilter(QDir.Files)
if dialog.exec():
filenames = dialog.selectedFiles()
f = open(filenames[0],encoding='utf-8',mode='r')
with f:
data = f.read()
self.contents.setText(data)
################################################
#######程序入门
################################################
if __name__ == "__main__":
app = QApplication(sys.argv)
the_mainwindow = FirstMainWindow()
the_mainwindow.show()
sys.exit(app.exec_())不知道你这个问题是否已经解决, 如果还没有解决的话: