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How to show all UI from another python file in current file when button is clicked.

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  • mrjjM mrjj

    @sdf1444
    Hi
    There is no magic to it.
    The import merely makes the types (classes) known.
    You must create instances of the classes you wish to use

    widget = MyWidget()

    MyWidget will of cause be another name, depending on what you import.

    S Offline
    S Offline
    sdf1444
    wrote on last edited by
    #14

    @mrjj

    What happens if I want to import the classes and functions but I don't know what the classes and functions are called.

    Thanks

    mrjjM 1 Reply Last reply
    0
    • S sdf1444

      @mrjj

      What happens if I want to import the classes and functions but I don't know what the classes and functions are called.

      Thanks

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by mrjj
      #15

      @sdf1444
      Then you open the py file and look what they are called ?
      In any case, you need to know the classnames or function names to use them.
      However, i think you can enumerate them as to list their names or similar in a list
      https://stackoverflow.com/questions/1796180/how-can-i-get-a-list-of-all-classes-within-current-module-in-python
      However, concrete names must be used to actually use them.

      S 1 Reply Last reply
      0
      • mrjjM mrjj

        @sdf1444
        Then you open the py file and look what they are called ?
        In any case, you need to know the classnames or function names to use them.
        However, i think you can enumerate them as to list their names or similar in a list
        https://stackoverflow.com/questions/1796180/how-can-i-get-a-list-of-all-classes-within-current-module-in-python
        However, concrete names must be used to actually use them.

        S Offline
        S Offline
        sdf1444
        wrote on last edited by
        #16

        @mrjj

        So I must no the class names if I want to import them? There is no way to import and show all the classes without having to know what they are called?

        Thanks

        mrjjM 1 Reply Last reply
        0
        • S sdf1444

          @mrjj

          So I must no the class names if I want to import them? There is no way to import and show all the classes without having to know what they are called?

          Thanks

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #17

          @sdf1444
          well you can use the * syntax to import all, but
          you must create instances to show them so you cant say
          "Import all and show them " as that is not how it works.
          Also if the module contains multiple widgets. Then the only option it would
          have was to show all widgets as separate windows as there would be no
          way to know in what way to combine them into a single window.
          However, the module could internally have multiple widgets defined and
          and have one widget that uses the tother so you would only need to create
          an instance of that one.

          Can you explain why you seem to hook on not using the class names?

          S 1 Reply Last reply
          0
          • mrjjM mrjj

            @sdf1444
            well you can use the * syntax to import all, but
            you must create instances to show them so you cant say
            "Import all and show them " as that is not how it works.
            Also if the module contains multiple widgets. Then the only option it would
            have was to show all widgets as separate windows as there would be no
            way to know in what way to combine them into a single window.
            However, the module could internally have multiple widgets defined and
            and have one widget that uses the tother so you would only need to create
            an instance of that one.

            Can you explain why you seem to hook on not using the class names?

            S Offline
            S Offline
            sdf1444
            wrote on last edited by
            #18

            @mrjj

            Hi

            I want to be able to import and show widgets from any other file in current python file but the condition is I have no idea what that file contains but I should be able to still show the widgets from that file. Please show me how to do this. As simple as possible would be great.

            Thanks

            1 Reply Last reply
            0
            • mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by mrjj
              #19

              Hi
              It seems you can use a string as class name and in that way maybe do it
              with
              https://stackoverflow.com/questions/553784/can-you-use-a-string-to-instantiate-a-class
              combined with
              https://stackoverflow.com/questions/1796180/how-can-i-get-a-list-of-all-classes-within-current-module-in-python
              so you import module , build stringlist and
              then use the

               def construct(self, builderName):
                      targetClass = getattr(idClasses, builderName)
                      instance = targetClass()
                      self.allClasses.append(instance)
              

              to actually construct a list of instances.

              Then you can insert into your main window to show.

              S 2 Replies Last reply
              0
              • mrjjM mrjj

                Hi
                It seems you can use a string as class name and in that way maybe do it
                with
                https://stackoverflow.com/questions/553784/can-you-use-a-string-to-instantiate-a-class
                combined with
                https://stackoverflow.com/questions/1796180/how-can-i-get-a-list-of-all-classes-within-current-module-in-python
                so you import module , build stringlist and
                then use the

                 def construct(self, builderName):
                        targetClass = getattr(idClasses, builderName)
                        instance = targetClass()
                        self.allClasses.append(instance)
                

                to actually construct a list of instances.

                Then you can insert into your main window to show.

                S Offline
                S Offline
                sdf1444
                wrote on last edited by
                #20

                @mrjj

                Hi could you give me a full working code because I still dont know how to do it based on your suggestions. Also I really appreciate all your suggestions.

                Thanks

                1 Reply Last reply
                0
                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #21

                  @sdf1444 you do realise that you are basically asking us to do your work for you ? You were already given several good starting points but you didn't even show anything you tried to get things working.

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

                  S 1 Reply Last reply
                  1
                  • SGaistS SGaist

                    @sdf1444 you do realise that you are basically asking us to do your work for you ? You were already given several good starting points but you didn't even show anything you tried to get things working.

                    S Offline
                    S Offline
                    sdf1444
                    wrote on last edited by sdf1444
                    #22

                    @sgaist

                    Hi

                    Here is some code to display widgets in pyqt5. But how do I allow the code so that it displays the imported widget from another file in the same python file/window without creating a new window for the new widget.

                    pyqt.py

                    import sys
                    from PyQt5.QtWidgets import *
                    from PyQt5.QtCore import *
                    from pyqt2 import *    
                    
                    class App(QWidget):
                        def __init__(self):
                            QMainWindow.__init__(self)
                    
                            pybutton = QPushButton('Click me', self)
                            pybutton.resize(200,70)
                            pybutton.move(400, 50)
                            self.show()
                    
                    if __name__ == "__main__":
                        app = QApplication(sys.argv)
                        mainWin = App()
                        mainWin2 = App2() 
                        sys.exit(app.exec_())
                    

                    Here is also the code for the imported python file:

                    pyqt2.py

                    import sys
                    from PyQt5.QtWidgets import *
                    from PyQt5.QtCore import *    
                    
                    class App2(QWidget):
                        def __init__(self):
                            QMainWindow.__init__(self)
                    
                            pybutton = QPushButton('hi', self)
                            pybutton.resize(200,70)
                            pybutton.move(900, 50)
                            self.show()
                    
                    1 Reply Last reply
                    0
                    • mrjjM mrjj

                      Hi
                      It seems you can use a string as class name and in that way maybe do it
                      with
                      https://stackoverflow.com/questions/553784/can-you-use-a-string-to-instantiate-a-class
                      combined with
                      https://stackoverflow.com/questions/1796180/how-can-i-get-a-list-of-all-classes-within-current-module-in-python
                      so you import module , build stringlist and
                      then use the

                       def construct(self, builderName):
                              targetClass = getattr(idClasses, builderName)
                              instance = targetClass()
                              self.allClasses.append(instance)
                      

                      to actually construct a list of instances.

                      Then you can insert into your main window to show.

                      S Offline
                      S Offline
                      sdf1444
                      wrote on last edited by sdf1444
                      #23

                      @mrjj

                      Hi

                      Here is some code to display widgets in pyqt5. But how do I allow the code so that it displays the imported widget from another file in the same python file/window without creating a new window for the new widget.

                      pyqt.py

                      import sys
                      from PyQt5.QtWidgets import *
                      from PyQt5.QtCore import *
                      from pyqt2 import *
                      class App(QWidget):
                      def init(self):
                      QMainWindow.init(self)
                          pybutton = QPushButton('Click me', self)
                          pybutton.resize(200,70)
                          pybutton.move(400, 50)
                          self.show()
                      if name == "main":
                      app = QApplication(sys.argv)
                      mainWin = App()
                      mainWin2 = App2()
                      sys.exit(app.exec_())
                      

                      Here is also the code for the imported python file:

                      pyqt2.py

                      import sys
                      from PyQt5.QtWidgets import *
                      from PyQt5.QtCore import *
                      
                      class App2(QWidget):
                      def init(self):
                      QMainWindow.init(self)
                          pybutton = QPushButton('hi', self)
                          pybutton.resize(200,70)
                          pybutton.move(900, 50)
                          self.show()
                      
                      1 Reply Last reply
                      0
                      • mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by
                        #24

                        Hi
                        Widgets that do not get a parent assigned, will become windows.
                        So normally you would insert the imported widgets into a
                        layout on the mainwindow.

                        S 1 Reply Last reply
                        0
                        • mrjjM mrjj

                          Hi
                          Widgets that do not get a parent assigned, will become windows.
                          So normally you would insert the imported widgets into a
                          layout on the mainwindow.

                          S Offline
                          S Offline
                          sdf1444
                          wrote on last edited by
                          #25

                          @mrjj

                          Hi

                          How do I do this? What is the code for this because I really don't understand how to do it.

                          Thanks very much much appreciated with also your help.

                          mrjjM 1 Reply Last reply
                          0
                          • S sdf1444

                            @mrjj

                            Hi

                            How do I do this? What is the code for this because I really don't understand how to do it.

                            Thanks very much much appreciated with also your help.

                            mrjjM Offline
                            mrjjM Offline
                            mrjj
                            Lifetime Qt Champion
                            wrote on last edited by
                            #26

                            @sdf1444
                            well something like
                            layout = QHBoxLayout()
                            layout.addWidget(button1) // button1 would be your imported widget instance

                            window.setLayout(layout)
                            window.show()

                            window most like being mainwindow

                            its a good idea to read about layouts
                            https://doc.qt.io/qtforpython/overviews/layout.html
                            so you know what you are using :)

                            S 2 Replies Last reply
                            0
                            • mrjjM mrjj

                              @sdf1444
                              well something like
                              layout = QHBoxLayout()
                              layout.addWidget(button1) // button1 would be your imported widget instance

                              window.setLayout(layout)
                              window.show()

                              window most like being mainwindow

                              its a good idea to read about layouts
                              https://doc.qt.io/qtforpython/overviews/layout.html
                              so you know what you are using :)

                              S Offline
                              S Offline
                              sdf1444
                              wrote on last edited by
                              #27

                              @mrjj

                              But the imported widget is defined in a class so how do I use the class in the layout of the main window?

                              1 Reply Last reply
                              0
                              • mrjjM mrjj

                                @sdf1444
                                well something like
                                layout = QHBoxLayout()
                                layout.addWidget(button1) // button1 would be your imported widget instance

                                window.setLayout(layout)
                                window.show()

                                window most like being mainwindow

                                its a good idea to read about layouts
                                https://doc.qt.io/qtforpython/overviews/layout.html
                                so you know what you are using :)

                                S Offline
                                S Offline
                                sdf1444
                                wrote on last edited by
                                #28

                                @mrjj

                                And how would this work for code I already have?

                                1 Reply Last reply
                                0
                                • mrjjM Offline
                                  mrjjM Offline
                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #29

                                  Hi
                                  but a widget is a class. ?
                                  so you import, you create an instance and insert into layout.

                                  It should not be an issue to integrate it with the code you have.
                                  Maybe you already have a layout. else now would be a good time to use one :)

                                  S 2 Replies Last reply
                                  0
                                  • mrjjM mrjj

                                    Hi
                                    but a widget is a class. ?
                                    so you import, you create an instance and insert into layout.

                                    It should not be an issue to integrate it with the code you have.
                                    Maybe you already have a layout. else now would be a good time to use one :)

                                    S Offline
                                    S Offline
                                    sdf1444
                                    wrote on last edited by
                                    #30

                                    @mrjj

                                    Can I have an example please?

                                    1 Reply Last reply
                                    0
                                    • mrjjM mrjj

                                      Hi
                                      but a widget is a class. ?
                                      so you import, you create an instance and insert into layout.

                                      It should not be an issue to integrate it with the code you have.
                                      Maybe you already have a layout. else now would be a good time to use one :)

                                      S Offline
                                      S Offline
                                      sdf1444
                                      wrote on last edited by
                                      #31

                                      @mrjj

                                      So how would I create instances of the classes which have multiple widgets and then insert into the layout?

                                      Thanks

                                      mrjjM 1 Reply Last reply
                                      0
                                      • S sdf1444

                                        @mrjj

                                        So how would I create instances of the classes which have multiple widgets and then insert into the layout?

                                        Thanks

                                        mrjjM Offline
                                        mrjjM Offline
                                        mrjj
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #32

                                        @sdf1444
                                        Hi
                                        what you say, classes, you mean normal python classes that use widgets or what do you mean?
                                        I can't answer that as it would be either you create the master class (composite) then (if its a widget) or
                                        you would create each widget by itself if the "class" if not a widget and you don't want to show it.
                                        However, it really depends on what you import.

                                        S 1 Reply Last reply
                                        0
                                        • mrjjM mrjj

                                          @sdf1444
                                          Hi
                                          what you say, classes, you mean normal python classes that use widgets or what do you mean?
                                          I can't answer that as it would be either you create the master class (composite) then (if its a widget) or
                                          you would create each widget by itself if the "class" if not a widget and you don't want to show it.
                                          However, it really depends on what you import.

                                          S Offline
                                          S Offline
                                          sdf1444
                                          wrote on last edited by
                                          #33

                                          @mrjj

                                          Basically this is an widget created inside a class. So I am importing widgets which are inside a master class. How do I instantiate this, and then insert into a layout?

                                          class App2(QWidget):
                                          def init(self):
                                          QMainWindow.init(self)
                                              pybutton = QPushButton('hi', self)
                                              pybutton.resize(200,70)
                                              pybutton.move(900, 50)
                                              self.show()
                                          
                                          1 Reply Last reply
                                          0

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