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[PyQt4] QTableWidget Readonly?

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  • D Daniel26

    @JonB
    self.addip_tw.setFlags(self.addip_tw.flags() & ~QtCore.Qt.ItemIsEditable)
    AttributeError: 'QTableWidget' object has no attribute 'setFlags'

    What did I wrong? Is setFlags Qt5 only?

    Regards

    Daniel

    JonBJ Offline
    JonBJ Offline
    JonB
    wrote on last edited by JonB
    #11

    @Daniel26
    As @SGaist gave you the link earlier, https://doc.qt.io/qt-5/qtablewidgetitem.html#setFlags is a method of each QTableWidgetItem. I imagine your self.addip_tw is the whole of the QTableWidget, not a QTableWidgetItem as my variable twi is intended to be.

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    • D Offline
      D Offline
      Daniel26
      wrote on last edited by
      #12

      Ok, sorry for that stupid question, but I'm new to pyQt and object orientated programming.
      QTableWidgetItem is only a cell of the QTableWidget? is that correct?

      I create an instance of QTableWidget as self.addip_tw and added the self.addip_tw to a QGridLayout.
      So I have to do the setFlags for every cell in my Table?

      SGaistS 1 Reply Last reply
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      • D Daniel26

        Ok, sorry for that stupid question, but I'm new to pyQt and object orientated programming.
        QTableWidgetItem is only a cell of the QTableWidget? is that correct?

        I create an instance of QTableWidget as self.addip_tw and added the self.addip_tw to a QGridLayout.
        So I have to do the setFlags for every cell in my Table?

        SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #13

        @Daniel26 said in [PyQt4] QTableWidget Readonly?:

        QTableWidgetItem is only a cell of the QTableWidget? is that correct?

        Not exactly, it's an object that will be stored in the model coming with QTableWidget and provide all the necessary data to be rendered by a cell of the table.

        A QTableWidget is a QTableView + a model all packed in one.

        You should check the Model/View Programming chapter in Qt's documentation for a good overview of how it is working.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • D Offline
          D Offline
          Daniel26
          wrote on last edited by
          #14

          Ok,

          so I set every Cell with an empty QWidgetItem so I can set it to readOnly?

          I'm totally confused....

          JonBJ 1 Reply Last reply
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          • D Daniel26

            Ok,

            so I set every Cell with an empty QWidgetItem so I can set it to readOnly?

            I'm totally confused....

            JonBJ Offline
            JonBJ Offline
            JonB
            wrote on last edited by
            #15

            @Daniel26
            You can indeed do it as @Denni-0 has said. To my mind, it doesn't really make the cells read-only, but it does stop the user doing anything to edit :) And it's only one line!

            For making the items not-editable, you could look at the code in https://stackoverflow.com/questions/7727863/how-to-make-a-cell-in-a-qtablewidget-read-only/ which is the accepted solution. Other answers there also show @Denni-0 's approach.

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            • D Offline
              D Offline
              Daniel26
              wrote on last edited by
              #16

              hello @ all,

              thanks for the help. I've got it, did it with the QTableWidget.
              But how can I check, if a column is empty?
              A simple "if self.addip_tw.item(x,y)" won't work :)

              Regards

              Daniel

              JonBJ 1 Reply Last reply
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              • D Daniel26

                hello @ all,

                thanks for the help. I've got it, did it with the QTableWidget.
                But how can I check, if a column is empty?
                A simple "if self.addip_tw.item(x,y)" won't work :)

                Regards

                Daniel

                JonBJ Offline
                JonBJ Offline
                JonB
                wrote on last edited by
                #17

                @Daniel26
                What do you mean by "if a column is empty"? Plus, why do you care if you are choosing to go for the simplest QTreeView.setEditTriggers(QAbstractItemView.NoEditTriggers)?

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                • D Offline
                  D Offline
                  Daniel26
                  wrote on last edited by
                  #18

                  Sorry, I ment if a cell is empty.

                  I store the content of the cells into a dictionary, but only if the first cell of the line is not empty.

                  JonBJ 1 Reply Last reply
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                  • D Daniel26

                    Sorry, I ment if a cell is empty.

                    I store the content of the cells into a dictionary, but only if the first cell of the line is not empty.

                    JonBJ Offline
                    JonBJ Offline
                    JonB
                    wrote on last edited by
                    #19

                    @Daniel26
                    The I don't understand why you say

                    A simple "if self.addip_tw.item(x,y)" won't work :)

                    since https://doc.qt.io/qt-5/qtablewidget.html#item does return nullptr for no item.

                    D 1 Reply Last reply
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                    • JonBJ JonB

                      @Daniel26
                      The I don't understand why you say

                      A simple "if self.addip_tw.item(x,y)" won't work :)

                      since https://doc.qt.io/qt-5/qtablewidget.html#item does return nullptr for no item.

                      D Offline
                      D Offline
                      Daniel26
                      wrote on last edited by
                      #20

                      @JonB
                      if self.addip_tw.item[row,0]:
                      TypeError: 'builtin_function_or_method' object has no attribute 'getitem'

                      JonBJ 1 Reply Last reply
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                      • D Daniel26

                        @JonB
                        if self.addip_tw.item[row,0]:
                        TypeError: 'builtin_function_or_method' object has no attribute 'getitem'

                        JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by
                        #21

                        @Daniel26
                        Please look at your code before saying things "don't work". Could this be because item() is a function and not an array?

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                        • D Offline
                          D Offline
                          Daniel26
                          wrote on last edited by
                          #22

                          Maybe.....fu....I'm blind, sorry.

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