QTablewidgetはPyQt5で新しいセルウィジェットを表示しません

Question

私のプログラムはPython3.5とPyQt5で書かれています。自分のクラスにQTableWidgetにカスタムウィジェットを追加するメソッドがあります。クラスの中から関数を呼び出すとQTablewidgetのセルウィジェットが変更されますが、別のカスタムクラスから呼び出してもウィジェットは変更されません。私はチェックし、アイテムとインデックスは変更されますが、新しいセルウィジェットは表示されません。何が問題ですか？ これは私のコードです：

class mainmenupage(QWidget): 
    elist = [] 
    def __init__(self): 
     #the main window widget features 
     self.setObjectName("mainpage") 
     self.resize(800, 480) 
     sizePolicy = QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed) 
     sizePolicy.setHorizontalStretch(0) 
     sizePolicy.setVerticalStretch(0) 
     sizePolicy.setHeightForWidth(self.sizePolicy().hasHeightForWidth()) 
     self.setSizePolicy(sizePolicy) 
     self.setMinimumSize(QSize(800, 480)) 
     self.setMaximumSize(QSize(800, 480)) 

     #the QTreeWidget features 
     self.category_tree = QTreeWidget(self) 
     self.category_tree.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) 
     self.category_tree.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) 
     self.category_tree.setGeometry(QRect(630, 90, 161, 381)) 
     self.category_tree.setLayoutDirection(Qt.RightToLeft) 
     self.category_tree.setLocale(QLocale(QLocale.Persian, QLocale.Iran)) 
     self.category_tree.setEditTriggers(QAbstractItemView.NoEditTriggers) 
     self.category_tree.setUniformRowHeights(False) 
     self.category_tree.setColumnCount(1) 
     self.category_tree.setObjectName("category_tree") 
     self.category_tree.headerItem().setText(0, "1") 
     self.category_tree.setFrameShape(QFrame.NoFrame) 
     self.category_tree.header().setVisible(False) 
     self.category_tree.header().setSortIndicatorShown(False) 
     self.category_tree.setFocusPolicy(Qt.NoFocus)) 

     #the QTableWidget features. It comes from the custom class myTableWidget 
     self.main_table = myTableWidget(self) 
     self.main_table.setGeometry(QRect(20, 140, 600, 330)) 
     sizePolicy = QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed) 
     sizePolicy.setHorizontalStretch(0) 
     sizePolicy.setVerticalStretch(0) 
     sizePolicy.setHeightForWidth(self.main_table.sizePolicy().hasHeightForWidth()) 
     self.main_table.setSizePolicy(sizePolicy) 
     self.main_table.setMinimumSize(QSize(0, 0)) 
     self.main_table.setLayoutDirection(Qt.LeftToRight) 
     self.main_table.setLocale(QLocale(QLocale.Persian, QLocale.Iran)) 
     self.main_table.setInputMethodHints(Qt.ImhNone) 
     self.main_table.setFrameShape(QFrame.NoFrame) 
     self.main_table.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) 
     self.main_table.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) 
     self.main_table.setEditTriggers(QAbstractItemView.NoEditTriggers) 
     self.main_table.setTabKeyNavigation(False) 
     self.main_table.setShowGrid(False) 
     self.main_table.setCornerButtonEnabled(False) 
     self.main_table.setUpdatesEnabled(True) 

     self.main_table.setRowCount(2) 
     self.main_table.setColumnCount(2) 

     self.main_table.setObjectName("main_table") 
     self.main_table.horizontalHeader().setVisible(False) 
     self.main_table.horizontalHeader().setHighlightSections(False) 
     self.main_table.verticalHeader().setVisible(False) 
     self.main_table.verticalHeader().setHighlightSections(False) 
     self.main_table.setFocusPolicy(Qt.NoFocus) 
     self.main_table.setSelectionMode(QAbstractItemView.NoSelection) 


     self.main_table.horizontalHeader().setDefaultSectionSize(300) 
     self.main_table.verticalHeader().setDefaultSectionSize(165) 

     self.category_tree.itemPressed.connect(self.insertdata) 

    def insertdata(self,subcat): 
     #get the text of clicked item from qtreewidget 
     item = self.category_tree.currentItem().text(0) 
     #get data from DB 
     datas = self.conn.retrievedata('*','words',"subcat='{}'".format(item)) 
     #check if the list of copied data is empty or not 
     if mainmenupage.elist != []: 
      del mainmenupage.elist[:] 
     #if the list is empty, the data received from DB appends to it 
     if mainmenupage.elist == []: 
      for data in datas: 
       mainmenupage.elist.append(data) 
      #delete the first index of copied list because it isn't needed here 
      mainmenupage.elist = mainmenupage.elist[1:] 
     # calls the populatemain function for populating qtablewidget with these datas with a custom index e.g. index 5 to 9. 
     self.populatemain(5,9) 

    def populatemain(self,startindexdata,endindexdata): 
     #make a list for indexes of items that will be added to qtablewidget 
     mtl=[] 
     for i in range(2): 
      for j in range(2): 
       mtl.append(i) 
       mtl.append(j) 
     #adding custom widgets as cellWidgets to qtablewidget 
     for index, my in enumerate(zip(*[iter(mtl)]*2)): 
      if mainmenupage.elist != []: 
       data = mainmenupage.elist[startindexdata:endindexdata][index] 

       exec("self.iteM{} = CustomWidget('{}','content/img/food.png')".format(data[0],data[4])) 
       exec("self.main_table.setCellWidget({} ,{}, self.iteM{})".format(*my,data[0])) 


class myTableWidget(QTableWidget): 
    def checking(self): 
     if (self.endgingposx - self.startingposx) <= -50: 
     #a custom function for checking that if the user made a swipe to left on the qtablewidget for chaning it's content 
      if mainmenupage.elist != []: 
       #make an instance from the previous class for accessing to populatemain method 
       x = mainmenupage() 
       #calling populatemain method for changing widgets in qtablewidget with the items made from different indexes of the copied data list e.g. indexes 0 to 4. but i don't know why this doesn't change the items. The populatemain function runs correctly it can be checked by putting print statement in it but it doesn't change the Qtablewidget contents. 
       x.populatemain(0,4) 
    def mousePressEvent(self,event): 
     super().mousePressEvent(event) 
     self.startingposx = event.x() 
    def mouseReleaseEvent(self,event): 
     super().mouseReleaseEvent(event) 
     self.endgingposx = event.x() 
     self.checking() 

class CustomWidget(QWidget): 
    def __init__(self, text, img, parent=None): 
     QWidget.__init__(self, parent) 

     self._text = text 
     self._img = img 

     self.setLayout(QVBoxLayout()) 
     self.lbPixmap = QLabel(self) 
     self.lbText = QLabel(self) 
     self.lbText.setAlignment(Qt.AlignCenter) 

     self.layout().addWidget(self.lbPixmap) 
     self.layout().addWidget(self.lbText) 

     self.initUi() 

    def initUi(self): 
     self.lbPixmap.setPixmap(QPixmap(self._img).scaled(260,135,Qt.IgnoreAspectRatio,transformMode = Qt.SmoothTransformation)) 
     self.lbText.setText(self._text) 


    @pyqtProperty(str) 
    def img(self): 
     return self._img 

    @img.setter 
    def total(self, value): 
     if self._img == value: 
      return 
     self._img = value 
     self.initUi() 

    @pyqtProperty(str) 
    def text(self): 
     return self._text 

    @text.setter 
    def text(self, value): 
     if self._text == value: 
      return 
     self._text = value 
     self.initUi() 

self.category_treeがQTreeWidget

self.main_tableは私の質問を完了するためのQTableWidget

です。 self.category_tree itemsのいずれかをクリックすると、insertdataが呼び出されます。 insertdataの最後の行で私はself.populatemain(5,9)と呼びますが、テーブルに4つのカスタムウィジェットを追加しますが、myTableWidgetクラスのcheckingメソッドからpopulatemainを呼び出すと、qtablewidgetの項目は変更されません。どうしましたか？ ありがとうございます。

Answer 1

努力の多くは最終的に私はこの方法で私の問題を解決した後： 私はQframeを作り、それにQTableWidgetをパット、このテーブルならば、私は以下の通りですQFrameのmousePressEventを呼び出すためにQTableWidgetのmou​​sePressEventをedittedクリックの開始位置と終了位置を単にチェックして、スワイプが発生したときにQTableWidgetの内容を更新する関数を作成しました。私はこのような問題に行く他の誰かを助けるためにこれを掲示した。