Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. Displaying real-time data on a 2nd window
Forum Updated to NodeBB v4.3 + New Features

Displaying real-time data on a 2nd window

Scheduled Pinned Locked Moved Unsolved General and Desktop
51 Posts 4 Posters 8.0k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • J john_hobbyist

    This post is deleted!

    JonBJ Offline
    JonBJ Offline
    JonB
    wrote on last edited by JonB
    #41

    @john_hobbyist said in Displaying real-time data on a 2nd window:

    mylayout.addWidget(self.imageviewer, 1, 1)

    You're not reading @SGaist's replies and understanding/acting on them. Anyway, what do you intend this line to do?

    1 Reply Last reply
    1
    • J Offline
      J Offline
      john_hobbyist
      wrote on last edited by
      #42

      @SGaist @JonB: You are right!!!! Thanks!

      1 Reply Last reply
      0
      • J Offline
        J Offline
        john_hobbyist
        wrote on last edited by john_hobbyist
        #43

        I call the above class each time the mouse pointer changes position. The problem is that nothing is shown..but the print commands that I have embed between the below commands work!
        Why?
        I call it like this:

        w = Town()
        w.show()
        

        This is the class that I call

        class Town(QWidget):
            def __init__(self):
                super().__init__()
                import sys
                from PyQt5.QtWidgets import QWidget,QPushButton,QApplication,QListWidget,QGridLayout,QLabel
                from PyQt5.QtCore import QTimer,QDateTime
                from PyQt5 import QtWidgets
                from PyQt5.QtWidgets import QApplication, QMainWindow
                from PyQt5 import QtCore
                
                win = QWidget()
                grid=QGridLayout()
               
                import pandas
                ct = pandas.read_csv('CurrentTown.csv')
                town = QLabel("town:")
                town.setStyleSheet("border: 1px solid black; background-color: yellow")  
                grid.addWidget(town, 1,1)
                textEdit_1 = QLineEdit(ct)
                textEdit_1.setReadOnly(True)
                grid.addWidget(textEdit_1,1,2)
        
                
                import os
                os.remove('CurrentTown.csv')
            
                self.setLayout(grid)
                win.setGeometry(100,100,200,100)
                win.setWindowTitle("Test")
                win.show()
                win.update()
        jsulmJ 1 Reply Last reply
        0
        • J john_hobbyist

          I call the above class each time the mouse pointer changes position. The problem is that nothing is shown..but the print commands that I have embed between the below commands work!
          Why?
          I call it like this:

          w = Town()
          w.show()
          

          This is the class that I call

          class Town(QWidget):
              def __init__(self):
                  super().__init__()
                  import sys
                  from PyQt5.QtWidgets import QWidget,QPushButton,QApplication,QListWidget,QGridLayout,QLabel
                  from PyQt5.QtCore import QTimer,QDateTime
                  from PyQt5 import QtWidgets
                  from PyQt5.QtWidgets import QApplication, QMainWindow
                  from PyQt5 import QtCore
                  
                  win = QWidget()
                  grid=QGridLayout()
                 
                  import pandas
                  ct = pandas.read_csv('CurrentTown.csv')
                  town = QLabel("town:")
                  town.setStyleSheet("border: 1px solid black; background-color: yellow")  
                  grid.addWidget(town, 1,1)
                  textEdit_1 = QLineEdit(ct)
                  textEdit_1.setReadOnly(True)
                  grid.addWidget(textEdit_1,1,2)
          
                  
                  import os
                  os.remove('CurrentTown.csv')
              
                  self.setLayout(grid)
                  win.setGeometry(100,100,200,100)
                  win.setWindowTitle("Test")
                  win.show()
                  win.update()
          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #44

          @john_hobbyist said in Displaying real-time data on a 2nd window:

          I call it like this:

          Where?
          Please show that part of your code.
          Also, why do you create a new QWidget in Town which does not contain anything? Town is already a QWidget.

          https://forum.qt.io/topic/113070/qt-code-of-conduct

          J 1 Reply Last reply
          1
          • jsulmJ jsulm

            @john_hobbyist said in Displaying real-time data on a 2nd window:

            I call it like this:

            Where?
            Please show that part of your code.
            Also, why do you create a new QWidget in Town which does not contain anything? Town is already a QWidget.

            J Offline
            J Offline
            john_hobbyist
            wrote on last edited by john_hobbyist
            #45

            @jsulm said in Displaying real-time data on a 2nd window:

            @john_hobbyist said in Displaying real-time data on a 2nd window:

            I call it like this:

            Where?
            Please show that part of your code.
            Also, why do you create a new QWidget in Town which does not contain anything? Town is already a QWidget.

            You mean this (?) :

            win = QWidget()
            . . . 
            win.setGeometry(100,100,200,100)
            win.setWindowTitle("Test")
            win.show()
            win.update()
            

            So, class Town(QWidget): makes a widget before the previous code...(?)

            jsulmJ 1 Reply Last reply
            0
            • J john_hobbyist

              @jsulm said in Displaying real-time data on a 2nd window:

              @john_hobbyist said in Displaying real-time data on a 2nd window:

              I call it like this:

              Where?
              Please show that part of your code.
              Also, why do you create a new QWidget in Town which does not contain anything? Town is already a QWidget.

              You mean this (?) :

              win = QWidget()
              . . . 
              win.setGeometry(100,100,200,100)
              win.setWindowTitle("Test")
              win.show()
              win.update()
              

              So, class Town(QWidget): makes a widget before the previous code...(?)

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #46

              @john_hobbyist said in Displaying real-time data on a 2nd window:

              You mean this

              Yes. Why do you need win?
              All other widgets you create in Town are added to Town.

              https://forum.qt.io/topic/113070/qt-code-of-conduct

              J 1 Reply Last reply
              1
              • jsulmJ jsulm

                @john_hobbyist said in Displaying real-time data on a 2nd window:

                You mean this

                Yes. Why do you need win?
                All other widgets you create in Town are added to Town.

                J Offline
                J Offline
                john_hobbyist
                wrote on last edited by
                #47

                @jsulm said in Displaying real-time data on a 2nd window:

                @john_hobbyist said in Displaying real-time data on a 2nd window:

                You mean this

                Yes. Why do you need win?
                All other widgets you create in Town are added to Town.

                And what I do with these?

                win.setGeometry(100,100,200,100)
                win.setWindowTitle("Test")
                win.show()
                win.update()
                

                I call them with self???

                jsulmJ 1 Reply Last reply
                0
                • J john_hobbyist

                  @jsulm said in Displaying real-time data on a 2nd window:

                  @john_hobbyist said in Displaying real-time data on a 2nd window:

                  You mean this

                  Yes. Why do you need win?
                  All other widgets you create in Town are added to Town.

                  And what I do with these?

                  win.setGeometry(100,100,200,100)
                  win.setWindowTitle("Test")
                  win.show()
                  win.update()
                  

                  I call them with self???

                  jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on last edited by
                  #48

                  @john_hobbyist said in Displaying real-time data on a 2nd window:

                  And what I do with these?

                  I don't know what you want to do with this.
                  You simply create a widget without parent and show it - it will be a stand-alone WINDOW.

                  "I call them with self???" - what does this mean? If you're asking me how you should change it: then I repeat my question "Why do you need it at all"?! Can you first answer this question?

                  https://forum.qt.io/topic/113070/qt-code-of-conduct

                  1 Reply Last reply
                  1
                  • J Offline
                    J Offline
                    john_hobbyist
                    wrote on last edited by john_hobbyist
                    #49

                    I call the class (from another class) like this:

                    w = Town()
                    w.show()
                    

                    how could the Qwidget be displayed if I do not include these (?) :

                    win.setGeometry(100,100,200,100)
                    win.setWindowTitle("Test")
                    win.show()
                    win.update()
                    

                    Especially win.show

                    Update: I removed the above mentioned lines. I put a sleep method for 10 sec. The code opens a window but it does not have something inside...and looks like it "stucks".

                    jsulmJ 1 Reply Last reply
                    0
                    • J john_hobbyist

                      I call the class (from another class) like this:

                      w = Town()
                      w.show()
                      

                      how could the Qwidget be displayed if I do not include these (?) :

                      win.setGeometry(100,100,200,100)
                      win.setWindowTitle("Test")
                      win.show()
                      win.update()
                      

                      Especially win.show

                      Update: I removed the above mentioned lines. I put a sleep method for 10 sec. The code opens a window but it does not have something inside...and looks like it "stucks".

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #50

                      @john_hobbyist I really have no idea what you want to do!
                      If you want to show Town all you need is

                      w = Town()
                      w.show()
                      

                      So, once more: why do you need win? win is ANOTHER widget, it is not Town! If you refuse to answer this simple question I'm out of this thread.
                      "but it does not have something inside...and looks like it "stucks"." - this is also something I already told you: you are showing a widget (win) which has no parent, so it is shown as a window. And since win does not contain any other widgets it is an empty window.

                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                      J 1 Reply Last reply
                      1
                      • jsulmJ jsulm

                        @john_hobbyist I really have no idea what you want to do!
                        If you want to show Town all you need is

                        w = Town()
                        w.show()
                        

                        So, once more: why do you need win? win is ANOTHER widget, it is not Town! If you refuse to answer this simple question I'm out of this thread.
                        "but it does not have something inside...and looks like it "stucks"." - this is also something I already told you: you are showing a widget (win) which has no parent, so it is shown as a window. And since win does not contain any other widgets it is an empty window.

                        J Offline
                        J Offline
                        john_hobbyist
                        wrote on last edited by john_hobbyist
                        #51

                        @jsulm said in Displaying real-time data on a 2nd window:

                        @john_hobbyist I really have no idea what you want to do!
                        If you want to show Town all you need is

                        w = Town()
                        w.show()
                        

                        So, once more: why do you need win? win is ANOTHER widget, it is not Town! If you refuse to answer this simple question I'm out of this thread.
                        "but it does not have something inside...and looks like it "stucks"." - this is also something I already told you: you are showing a widget (win) which has no parent, so it is shown as a window. And since win does not contain any other widgets it is an empty window.

                        Ok, so I do not need it...! As I understand now this is wrong there! (You know how things are for new programmers, using code from websites and trying to learn/experiment and build something...)

                        1 Reply Last reply
                        0

                        • Login

                        • Login or register to search.
                        • First post
                          Last post
                        0
                        • Categories
                        • Recent
                        • Tags
                        • Popular
                        • Users
                        • Groups
                        • Search
                        • Get Qt Extensions
                        • Unsolved