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

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  • M mrjj
    18 Aug 2019, 08:33

    @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 18 Aug 2019, 10:06 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
    • M Offline
      M Offline
      mrjj
      Lifetime Qt Champion
      wrote on 18 Aug 2019, 10:23 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 18 Aug 2019, 12:17
      0
      • M mrjj
        18 Aug 2019, 10:23

        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 18 Aug 2019, 12:17 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
        • S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote on 18 Aug 2019, 19:03 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 19 Aug 2019, 08:24
          1
          • S SGaist
            18 Aug 2019, 19:03

            @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 19 Aug 2019, 08:24 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
            • M mrjj
              18 Aug 2019, 10:23

              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 19 Aug 2019, 08:34 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
              • M Offline
                M Offline
                mrjj
                Lifetime Qt Champion
                wrote on 19 Aug 2019, 08:38 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 19 Aug 2019, 08:46
                0
                • M mrjj
                  19 Aug 2019, 08:38

                  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 19 Aug 2019, 08:46 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.

                  M 1 Reply Last reply 19 Aug 2019, 08:51
                  0
                  • S sdf1444
                    19 Aug 2019, 08:46

                    @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.

                    M Offline
                    M Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on 19 Aug 2019, 08:51 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 19 Aug 2019, 09:02
                    0
                    • M mrjj
                      19 Aug 2019, 08:51

                      @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 19 Aug 2019, 09:02 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
                      • M mrjj
                        19 Aug 2019, 08:51

                        @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 19 Aug 2019, 09:17 last edited by
                        #28

                        @mrjj

                        And how would this work for code I already have?

                        1 Reply Last reply
                        0
                        • M Offline
                          M Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on 19 Aug 2019, 09:20 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 19 Aug 2019, 09:32
                          0
                          • M mrjj
                            19 Aug 2019, 09:20

                            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 19 Aug 2019, 09:32 last edited by
                            #30

                            @mrjj

                            Can I have an example please?

                            1 Reply Last reply
                            0
                            • M mrjj
                              19 Aug 2019, 09:20

                              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 19 Aug 2019, 10:03 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

                              M 1 Reply Last reply 19 Aug 2019, 10:12
                              0
                              • S sdf1444
                                19 Aug 2019, 10:03

                                @mrjj

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

                                Thanks

                                M Offline
                                M Offline
                                mrjj
                                Lifetime Qt Champion
                                wrote on 19 Aug 2019, 10:12 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 19 Aug 2019, 10:19
                                0
                                • M mrjj
                                  19 Aug 2019, 10:12

                                  @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 19 Aug 2019, 10:19 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
                                  • M Offline
                                    M Offline
                                    mrjj
                                    Lifetime Qt Champion
                                    wrote on 19 Aug 2019, 10:27 last edited by mrjj
                                    #34

                                    Well normally one would use App2 as that is the
                                    composite widget.
                                    So often that makes the most sense to use as it will then init the
                                    widget it uses in a proper way.

                                    S 1 Reply Last reply 19 Aug 2019, 10:29
                                    0
                                    • M mrjj
                                      19 Aug 2019, 10:27

                                      Well normally one would use App2 as that is the
                                      composite widget.
                                      So often that makes the most sense to use as it will then init the
                                      widget it uses in a proper way.

                                      S Offline
                                      S Offline
                                      sdf1444
                                      wrote on 19 Aug 2019, 10:29 last edited by
                                      #35

                                      @mrjj

                                      So I how do I show this in the main window. What is the overall code?

                                      M 1 Reply Last reply 19 Aug 2019, 10:47
                                      0
                                      • S sdf1444
                                        19 Aug 2019, 10:29

                                        @mrjj

                                        So I how do I show this in the main window. What is the overall code?

                                        M Offline
                                        M Offline
                                        mrjj
                                        Lifetime Qt Champion
                                        wrote on 19 Aug 2019, 10:47 last edited by
                                        #36

                                        @sdf1444
                                        something like
                                        (import it )

                                        layout = QHBoxLayout()
                                        layout.addWidget(App2)
                                        yourwindow.setLayout(layout)
                                        yourwindow.show()

                                        S 1 Reply Last reply 19 Aug 2019, 11:25
                                        0
                                        • M mrjj
                                          19 Aug 2019, 10:47

                                          @sdf1444
                                          something like
                                          (import it )

                                          layout = QHBoxLayout()
                                          layout.addWidget(App2)
                                          yourwindow.setLayout(layout)
                                          yourwindow.show()

                                          S Offline
                                          S Offline
                                          sdf1444
                                          wrote on 19 Aug 2019, 11:25 last edited by
                                          #37

                                          @mrjj

                                          Hi

                                          I am getting this error when I add the layout code into pyqt.py: TypeError: addWidget(self, QWidget, stretch: int = 0, alignment: Union[Qt.Alignment, Qt.AlignmentFlag] = Qt.Alignment()): argument 1 has unexpected type 'sip.wrappertype'

                                          import sys
                                          from PyQt5.QtWidgets import *
                                          from PyQt5.QtCore import *
                                          from pyqt2 import *

                                          class App(QWidget):
                                          def init(self):
                                          QMainWindow.init(self)

                                              layout = QHBoxLayout()
                                              layout.addWidget(App2)
                                              yourwindow.setLayout(layout)
                                              yourwindow.show()
                                          
                                              pybutton = QPushButton('Click me', self)
                                              pybutton.resize(200,70)
                                              pybutton.move(400, 50)
                                              self.show()
                                          

                                          if name == "main":
                                          app = QApplication(sys.argv)
                                          mainWin = App()
                                          sys.exit(app.exec_())

                                          1 Reply Last reply
                                          0

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