Qt for Python

@spinbean said in PyQt6 QCheckBox, different action when text/box is clicked.: I am trying to make a QCheckbox where I seperate between clicking on the checkbox "text" and the checkbox "box". I think you will find you should not do this. For consistent interface end users will expect clicking either will have same behaviour (checkbox state toggle), that is how 99% of applications work.

@SGaist Sure https://bugreports.qt.io/browse/QTBUG-118501

@JonB I found on StackOverflow someone bringing up the same issue. It was 8 years old so I needed to bring it up to PySide6. It does indeed show the same problem, one tab needing to be large forcing the smaller tab to grow, needlessly to the same size. There is an answer which looks like it might work but I could not see how to implement it. In the code I've commented out code corresponding to the answer. #!/bin/python import sys from PySide6 import QtGui, QtCore, QtWidgets from PySide6.QtWidgets import (QApplication, QMainWindow, QTableWidget, QTableWidgetItem, QVBoxLayout, QWidget, QTabWidget, QLayout, QSizePolicy) class TabExample(QtWidgets.QWidget): def __init__(self): super(TabExample, self).__init__() self.initUI() def initUI(self): self.vbox_main = QtWidgets.QVBoxLayout() self.table_blank = QtWidgets.QTableWidget(10, 4) self.tabw = QtWidgets.QTabWidget() self.tab_A = QtWidgets.QWidget() self.vbox_A = QtWidgets.QVBoxLayout(self.tab_A) for i in range(40): lab = QtWidgets.QLabel('label %d' %i) self.vbox_A.addWidget(lab) self.tab_B = QtWidgets.QWidget() self.vbox_B = QtWidgets.QVBoxLayout(self.tab_B) for i in range(5): lab = QtWidgets.QLabel('labelB %d'%i) self.vbox_B.addWidget(lab) #COMMENT OUT NEXT LINE TO SEE DESIRED SIZE OF TAB B self.tabw.addTab(self.tab_A, 'Tab A') self.tabw.addTab(self.tab_B, 'Tab B') self.vbox_main.addWidget(self.table_blank, 1) self.vbox_main.addWidget(self.tabw) self.setLayout(self.vbox_main) self.setGeometry(0,0, 400, 600) #self.move(QtGui.QDesktopWidget().availableGeometry().center() - self.frameGeometry().center()) self.show() # def __init__(self): # super(TabExample, self).__init__() # self.initUI() # #self.tabWidget_2.currentChanged.connect(self.updateSizes) # #self.tab_B.parentWidget().connect(lab,800,600) # # self.tab_B.currentChanged.connect(self.updateSizes) # def updateSizes(self): # for i in range(self.tabWidget_2.count()): # #self.tabWidget_2.widget(i).setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored) # self.tab_B.widget(i).setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored) # # #current = self.tabWidget_2.currentWidget() # current = self.tab_B.currentWidget() # current.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum) def main(): app = QtWidgets.QApplication(sys.argv) tabExample = TabExample() sys.exit(app.exec()) if __name__ == "__main__": main()

@Pipper you're welcome ! If that answers your question, please mark the thread as solved using the "Topic Tools" button or the three dotted menu beside the answer your deem correct so other forum users may know a solution has been found :-)

If this is 6.6; it might be a manifestation of https://bugreports.qt.io/browse/QTBUG-118317 .

@guillermollopis said in PyQT program crashes on Mac (not on Windows) when clicking on QComboBox: Also, I just get the error when using Mac, not Windows Well, it can work on one platform but fail on another. Can you provide a minimal reproducible example showing this behaviour? I could try on my Mac.

@jdev8000 You can move all this long lasting checks including the timer in a worker object which is running in another thread. Everytime there is something new in that thread the worker object emits a signal. This signal is connected to a slot in the UI thread. This slots updates the UI. Never touch UI in other threads, only in main/UI thread! See https://wiki.qt.io/QThreads_general_usage

The most simple would be to do that on your own machine using a virtual environment. You can use either conda or pip's virtualenv. You also might want to move to PySide6.

@Rivridis Anything "visual" like scroll position, size, cursor position, focus you need to leave it to draw itself once after e.g. setHtml(), because they get reset or need recalculating.

@sophia73583 said in Flags: object cannot be interpreted as an integer: Using and instead of & fixed my issue. Might have been issue with a later version of PySide. It might have fixed the error but I am surprised/you seem lucky it gives you the correct behaviour. In Python & is bit-wise AND, which ought be wanted here, while the and you are now using is logical True/False result.

Hello, At first I thought I had a problem with the menu. Now I've come to the conclusion that it's the CSS. There are no error messages at the moment, but here is debug information as requested: app_css = {str} 'QPushButton:focus { background-color: yellow } QTextEdit:focus { background-color: yellow } QComboBox:focus { background-color: yellow } QMainWindow {background-color: black; color: white;}' font_size = {str} '30' high_contrast = {bool} True self = {HTMLGeneratorApp} <main.HTMLGeneratorApp object at 0x0000026E98A09EA0> style = {str} 'font-size: 30px;'

@sophia73583 item.deleted.connect(self.removeItem(item)) This is not the right way to connect a slot to pass it a parameter, and does not do what you think. You need: item.deleted.connect(lambda: self.removeItem(item))

this code: if high_contrast: style += " QMainWindow {background-color: black; color: white;}" print(style) self.main_window.setStyleSheet(style) output print: font-size: 30px; QMainWindow {background-color: black; color: white;} but this works: if high_contrast: style = " QMainWindow {background-color: black; color: white;}" print(style) self.main_window.setStyleSheet(style) output print: QMainWindow {background-color: black; color: white;} the problem just appears with += . (style += )

@Shyamnath thanks once again for your answer. I confirm that you were right about the reason - everything went well when I moved venv into different location. (Unfortunately the whole thing became broken after recent updates. A binary file created by pure nuitka worked month ago. But today nothing happens if I run newly generated file - regardles who created it - nuitka or pyside6-deploy. It exits silently without any error message).

Have you had a look at the pyQode project? https://github.com/pyQode/pyqode.core I can't point you to the exact point now. But surely this is done with pyQode!

I figured it out: def change_font_size(self, new_font_size): """ Ändert die Schriftgröße im QMainWindow """ fontsize = new_font_size self.setStyleSheet('font-size: ' + fontsize+'px')

@Mattik if you have svg images, you use QGraphicsSvgItem because QGraphicsPixmapItem can not preserve the resolution of the images.

@Sachin-Bhatt said in Data Science Challenge: Analyzing Customer Purchase Patterns: Could you provide Python code examples and explanations for each of these analyses using the provided dataset? Since this is a Python question, nothing to do with Qt, I suggest you ask in a Python forum. Also, I hate to ask, but is the point of this "challenge" that you figure the stuff for yourself rather than asking others to give the answer?