在按钮按下时在滚动区域中加载 QTableWidgets [英] Load QTableWidgets in a Scroll Area on Button Push

问题描述

我有一个名为test()"的方法，可以将 3 个单行表加载到滚动条中.

I have a method named 'test()' that loads 3 one-row tables into a scrollbar.

由于某种原因，我无法弄清楚，但是，如果我只是在加载时激活 test() 就可以工作，如果我将其注释掉然后尝试通过按下按钮激活它，则它不起作用.

For some reason that I cannot figure out, however, the while it works if I simply activate test() on load, it doesn't work if I comment it out and then try to activate it via the push of a button.

这里是主模块(带 test())

Here is the main module (with test())

from PyQt5 import QtCore, QtWidgets
from design import Ui_MainWindow

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, *args, **kwargs):
        QtWidgets.QMainWindow.__init__(self, *args, **kwargs)
        self.setupUi(self)
        #test(self)

def test(self):
    from random import randint
    x = randint(0, 99)
    print(x)
    height = 30
    yPos = 0
    for i in range(3):

        rowVals = ['test%s' % str(x + i)]

        qTbl = QtWidgets.QTableWidget(self.sawDoc)
        qTbl.setObjectName("tbl%s" % (i))
        qTbl.setGeometry(QtCore.QRect(0, yPos, 880, height))
        qTbl.horizontalHeader().setVisible(False)
        qTbl.verticalHeader().setVisible(False)
        yPos += height

        qTbl.setRowCount(1)
        qTbl.setColumnCount(len(rowVals))
        for r, cell in enumerate(rowVals):
            item = QtWidgets.QTableWidgetItem()
            item.setText(str(cell))
            qTbl.setItem(0, r, item)

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

这是设计模块(带按钮)

And here is the design module (with the button)

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(896, 453)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.scrDoc = QtWidgets.QScrollArea(self.centralwidget)
        self.scrDoc.setGeometry(QtCore.QRect(0, 0, 891, 391))
        self.scrDoc.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
        self.scrDoc.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.scrDoc.setWidgetResizable(False)
        self.scrDoc.setObjectName("scrTest")
        self.sawDoc = QtWidgets.QWidget()
        self.sawDoc.setGeometry(QtCore.QRect(0, 0, 869, 300))
        self.sawDoc.setObjectName("sawDoc")
        self.scrDoc.setWidget(self.sawDoc)
        self.btnTest = QtWidgets.QPushButton(self.centralwidget)
        self.btnTest.setGeometry(QtCore.QRect(430, 400, 80, 15))
        self.btnTest.setObjectName("btnTest")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

        self.btnTest.clicked.connect(self.test)

    def test(self):
        import main
        main.test(self)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "昊珩のCAT工具"))
        self.btnTest.setText(_translate("MainWindow", "Test"))



if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

当我按下按钮时没有任何反应(除了打印成功).

Simply nothing happens when I push the button (except for the print out working successfully).

有人能告诉我出了什么问题吗?

Can someone tell what's wrong?

推荐答案

一开始是家长给孩子展示的，但是之后是孩子的责任来展示自己，简单的解决方法就是使用show():

The parents show the children at the beginning, but afterwards it is the responsibility of the children to show themselves, the simple solution is to use show():

qTbl = QtWidgets.QTableWidget(self.sawDoc)
qTbl.show()

但是我看你实现的方式不雅，连接在main.py中做，不要修改Qt Designer生成的文件(删除design.py中的连接和测试方法)您必须使用布局并添加 QTableWidget.

But I see that you are implementing the solution in an inelegant way, the connection do it in main.py, do not modify the file generated by Qt Designer (delete the connection and the test method in design.py) You must use a layout and there add the QTableWidget.

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, *args, **kwargs):
        QtWidgets.QMainWindow.__init__(self, *args, **kwargs)
        self.setupUi(self)
        self.btnTest.clicked.connect(self.test)

    def test(self):
        from random import randint
        x = randint(0, 99)

        lay = QtWidgets.QVBoxLayout(self.sawDoc)
        for i in range(3):
            rowVals = ['test%s' % str(x + i)]
            qTbl = QtWidgets.QTableWidget()
            qTbl.setObjectName("tbl%s" % (i))
            qTbl.horizontalHeader().hide()
            qTbl.verticalHeader().hide()
            qTbl.setRowCount(1)
            qTbl.setColumnCount(len(rowVals))
            for r, cell in enumerate(rowVals):
                item = QtWidgets.QTableWidgetItem()
                item.setText(str(cell))
                qTbl.setItem(0, r, item)
            qTbl.resize(qTbl.sizeHint())
            lay.addWidget(qTbl)

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