我在 QT Designer 中构建了一个 ui，然后使用 pyside-uic 将其转换为 python 文件，然后编写了一些代码以编程方式对其进行编辑。换句话说，我有一个按钮Add Row单击时会将其自身重命名为Remove1并创建另一个按钮并将其命名为Add Row并将其添加到布局中。

点击时的代码Add Row，更改名称和信号/槽：

self.pb_Row[-1].setText('Remove'+str(self.nRows))
self.pb_Row[-1].clicked.disconnect( self.addRow )
self.pb_Row[-1].clicked.connect( self.removeRow )

点击时的代码Remove，删除选定的按钮：

iRow = int(self.sender().objectName().split('_')[-1])-1
ind = self.PropertyLayout.indexOf(self.pb_Row[iRow])
t = self.PropertyLayout.takeAt(ind)
t.widget().deleteLater()
# self.pb_Row[iRow].hide()
# self.pb_Row[iRow].deleteLater()
self.pb_Row.pop(iRow)

这工作得很好，直到你添加至少一个然后将其删除，下一次它就会变得混乱。基本上，当我有两个按钮并删除一个按钮然后尝试添加一个按钮时，它会出现错误。我所说的行为不当是指新按钮最终位于旧按钮之上，有时它出现在下方而不是上方。

另外，如果我使用当前的行，它并不会真正重新组织网格布局中的内容.hide()它的功能。我不太确定应该使用哪个。

Thanks!

以下是产生不良结果的序列：

Fresh start

After Clicking Add

After clicking remove (all fine so far), then click Add (no visible difference)

After clicking Add a second time

After clicking Remove2, Remove1 appears from under it

“工作”代码示例

import numpy as np
import sys
from PySide import QtCore, QtGui
import matplotlib.pyplot as plt

from ModesInFiber import Ui_fiberModesMainWindow

class Ui_fiberModesMainWindow(object):
    def setupUi(self, fiberModesMainWindow):
        fiberModesMainWindow.setObjectName("fiberModesMainWindow")
        fiberModesMainWindow.resize(653, 597)
        self.centralwidget = QtGui.QWidget(fiberModesMainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.horizontalLayout_2 = QtGui.QHBoxLayout(self.centralwidget)
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.MainLayout = QtGui.QGridLayout()
        self.MainLayout.setObjectName("MainLayout")
        self.PropertyLayout = QtGui.QGridLayout()
        self.PropertyLayout.setObjectName("PropertyLayout")
        self.lbl_Name = QtGui.QLabel(self.centralwidget)
        self.lbl_Name.setObjectName("lbl_Name")
        self.PropertyLayout.addWidget(self.lbl_Name, 0, 1, 1, 1)
        self.pb_addRow_1 = QtGui.QPushButton(self.centralwidget)
        self.pb_addRow_1.setObjectName("pb_addRow_1")
        self.PropertyLayout.addWidget(self.pb_addRow_1, 1, 5, 1, 1)
        self.ledit_Name_1 = QtGui.QLineEdit(self.centralwidget)
        self.ledit_Name_1.setObjectName("ledit_Name_1")
        self.PropertyLayout.addWidget(self.ledit_Name_1, 1, 1, 1, 1)
        self.MainLayout.addLayout(self.PropertyLayout, 0, 0, 1, 1)
        spacerItem2 = QtGui.QSpacerItem(20, 40, QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Expanding)
        self.MainLayout.addItem(spacerItem2, 1, 0, 1, 1)
        self.horizontalLayout_2.addLayout(self.MainLayout)
        fiberModesMainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(fiberModesMainWindow)
        QtCore.QMetaObject.connectSlotsByName(fiberModesMainWindow)
#         fiberModesMainWindow.setTabOrder(self.ledit_Name_1, self.ledit_Width_1)
#         fiberModesMainWindow.setTabOrder(self.ledit_Width_1, self.cmb_RIType_1)
#         fiberModesMainWindow.setTabOrder(self.cmb_RIType_1, self.ledit_RIParam_1)
#         fiberModesMainWindow.setTabOrder(self.ledit_RIParam_1, self.pb_addRow_1)

    def retranslateUi(self, fiberModesMainWindow):
        fiberModesMainWindow.setWindowTitle(QtGui.QApplication.translate("fiberModesMainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
        self.lbl_Name.setText(QtGui.QApplication.translate("fiberModesMainWindow", "Name", None, QtGui.QApplication.UnicodeUTF8))
        self.pb_addRow_1.setText(QtGui.QApplication.translate("fiberModesMainWindow", "Add Row", None, QtGui.QApplication.UnicodeUTF8))


class DesignerMainWindow(QtGui.QMainWindow, Ui_fiberModesMainWindow):

    def __init__(self, parent = None):
        super(DesignerMainWindow, self).__init__(parent)
        self.setupUi(self)
        self.pb_addRow_1.clicked.connect( self.addRow )

        self.ledit_Name     = [ self.ledit_Name_1 ]
        self.pb_Row      = [ self.pb_addRow_1 ]

        # number of rows
        self.nRows = 1


    def addRow( self ):

        self.ledit_Name[-1].setEnabled(False)
        self.pb_Row[-1].setText('Remove'+str(self.nRows))
        self.pb_Row[-1].clicked.disconnect( self.addRow )
        self.pb_Row[-1].clicked.connect( self.removeRow )

        self.nRows += 1

        self.ledit_Name.append( QtGui.QLineEdit(self.centralwidget) )
        self.ledit_Name[-1].setObjectName('ledit_Name_'+str(self.nRows))
        self.PropertyLayout.addWidget( self.ledit_Name[-1], self.nRows, 1, 1, 1)

        self.pb_Row.append( QtGui.QPushButton(self.centralwidget) )
        self.pb_Row[-1].setObjectName( 'pb_addRow_'+str(self.nRows) )
        self.pb_Row[-1].setText('Add Row')
        self.pb_Row[-1].clicked.connect( self.addRow )
        self.PropertyLayout.addWidget( self.pb_Row[-1], self.nRows, 5, 1, 1)


    def removeRow( self ):

        iRow = int(self.sender().objectName().split('_')[-1])-1
        self.nRows -= 1

        ind = self.PropertyLayout.indexOf(self.ledit_Name[iRow])
        t = self.PropertyLayout.takeAt(ind)
        t.widget().setParent(None)
#             t.widget().deleteLater()
#             self.ledit_Name[iRow].hide()
#             self.ledit_Name[iRow].deleteLater()
#             self.ledit_Name[iRow].setParent(None)
        self.ledit_Name.pop(iRow)

        ind = self.PropertyLayout.indexOf(self.pb_Row[iRow])
        t = self.PropertyLayout.takeAt(ind)
        t.widget().setParent(None)
#             t.widget().deleteLater()
#             self.pb_Row[iRow].hide()
#             self.pb_Row[iRow].deleteLater()
#             self.pb_Row[iRow].setParent(None)
        self.pb_Row.pop(iRow)

        for iAfterRow in range(iRow, self.nRows):
            self.ledit_Name[iAfterRow].setObjectName( 'ledit_Name_' + str(iAfterRow+1) )
            self.pb_Row[iAfterRow].setObjectName( 'ledit_Name_' + str(iAfterRow+1) )

        print 'Remove row', iRow

if __name__ == '__main__':
    app = QtGui.QApplication( sys.argv )
    dmw = DesignerMainWindow()
    dmw.show()
    sys.exit( app.exec_() )

这里的问题是由 QGridLayout 的实现细节引起的。

每当从 QGridLayout 中删除项目时，logical行和列永远不会减少，即使visual行或列都可以。因此，您应该始终使用以下方法直接处理 GridLayout 中的项目获取项目位置 and 项目位置.

下面是重写的DesignerMainWindow使用这种方法的示例中的类。显然，它可能需要进行一些调整才能与您的实际应用程序配合使用。

class DesignerMainWindow(QtGui.QMainWindow, Ui_fiberModesMainWindow):
    def __init__(self, parent = None):
        super(DesignerMainWindow, self).__init__(parent)
        self.setupUi(self)
        self.pb_addRow_1.clicked.connect( self.addRow )

    def addRow( self ):
        rows = self.PropertyLayout.rowCount()
        columns = self.PropertyLayout.columnCount()
        for column in range(columns):
            layout = self.PropertyLayout.itemAtPosition(rows - 1, column)
            if layout is not None:
                widget = layout.widget()
                if isinstance(widget, QtGui.QPushButton):
                    widget.setText('Remove %d' % (rows - 1))
                    widget.clicked.disconnect(self.addRow)
                    widget.clicked.connect(self.removeRow)
                else:
                    widget.setEnabled(False)
        widget = QtGui.QLineEdit(self.centralwidget)
        self.PropertyLayout.addWidget(widget, rows, 1, 1, 1)
        widget = QtGui.QPushButton(self.centralwidget)
        widget.setText('Add Row')
        widget.clicked.connect(self.addRow)
        self.PropertyLayout.addWidget(widget, rows, columns - 1, 1, 1)

    def removeRow(self):
        index = self.PropertyLayout.indexOf(self.sender())
        row = self.PropertyLayout.getItemPosition(index)[0]
        for column in range(self.PropertyLayout.columnCount()):
            layout = self.PropertyLayout.itemAtPosition(row, column)
            if layout is not None:
                layout.widget().deleteLater()
                self.PropertyLayout.removeItem(layout)