Qt for Python

@eyllanesc Thank you for pointing me an example, I will be more patient in searching through the documentation of Qt although I must admit that it's not that easy to find what you need at a first glance. According to the community helpfulness, that is why I have raised my question here, expecting a help which I already got it thanks to you guys.

Thanks !

Another difference between the PyQt6 and Pyside6 is the way this libraries loads .ui files generated from Qt Designer and the scripts used to convert .ui files to Python code. You can find more detailed information on https://www.learnpyqt.com/blog/pyqt6-vs-pyside6/ page.

ok, at first glance i fixed the crash, now app destroys objects correctly class ListWidgetCompleter(QObject): def __init__(self, popup: QWidget, widget: QWidget): QObject.__init__(self, None) assert popup != None assert widget != None self.destroyed.connect(ListWidgetCompleterDestroed) # assert isinstance(parent, QLineEdit) self.__maxVisibaleItems = 0 self.__attachPoupToWidget(popup, widget) def __del__(self): print("<<>> ListWidgetCompleter py layer deleted") def __attachPoupToWidget(self, popup: QWidget, widget: QWidget): self.__popup = popup self.__widget = widget self.__popup.setParent(None) self.__popup.setWindowFlag(Qt.Popup) self.__popup.installEventFilter(self) self.__widget.installEventFilter(self) self.__popup.setFocusProxy(self.__widget) self.__popup.setFocusPolicy(self.__widget.focusPolicy()) def setMaxVisibleItems(self, maxItems: int): self.__maxVisibaleItems = maxItems def popup(self): return self.__popup def widget(self): return self.__widget def showPopup(self, rect): pos = self.__widget.mapToGlobal(QPoint(0, 0)) print("X " + str(pos.x()) + " Y " + str(pos.y()) + " le.w " + str(self.__widget.width())) self.__popup.setGeometry(pos.x(), pos.y() + self.__widget.height(), self.__widget.width(), 80) if not self.__popup.isVisible(): self.__popup.show() self.__popup.setFocus() def eventFilter(self, o: QObject, e: QEvent): if self.__widget == o: pass else: if e.type() == QEvent.KeyPress: print("keypress") self.__widget.setFocus() self.__widget.event(e) return False return QObject.eventFilter(self, o, e) <<>> DicView py layer deleted <<>> ListWidgetCompleter py layer deleted <<>> ListWidgetCompleter C++ obj removed<PyQt5.QtCore.QObject object at 0x000002345A1C88B0> <<>> SuggestionPopup py layer deleted <<>> SuggestionPopup C++ obj removed<PyQt5.QtWidgets.QWidget object at 0x000002345A1C88B0> <<>> DicView C++ obj removed<PyQt5.QtWidgets.QWidget object at 0x000002345A194EE0>

So my shape from the txt file (annotation file) is : shapes from the file: [('Object_A', [(14, 134), (816, 134), (816, 458), (14, 458)], None, None, False)] Then in the file canvas.py a function is written for moveMouseEvent() which includes the panning of the shape, moving of the shape and is as follows: if Qt.LeftButton & ev.buttons(): if self.selectedVertex(): self.boundedMoveVertex(pos) self.shapeMoved.emit() self.repaint() elif self.selectedShape and self.prevPoint: self.overrideCursor(CURSOR_MOVE) self.boundedMoveShape(self.selectedShape, pos) self.shapeMoved.emit() self.repaint() print(f'selected shape prev point: {self.selectedShape.points}') I added the print statement just to output the coordinates of the shape when moved and the output is as follows: selected shape prev point: [PyQt5.QtCore.QPointF(14.0, 133.0), PyQt5.QtCore.QPointF(816.0, 133.0), PyQt5.QtCore.QPointF(816.0, 457.0), PyQt5.QtCore.QPointF(14.0, 457.0)] selected shape prev point: [PyQt5.QtCore.QPointF(17.0, 131.0), PyQt5.QtCore.QPointF(819.0, 131.0), PyQt5.QtCore.QPointF(819.0, 455.0), PyQt5.QtCore.QPointF(17.0, 455.0)] selected shape prev point: [PyQt5.QtCore.QPointF(23.0, 131.0), PyQt5.QtCore.QPointF(825.0, 131.0), PyQt5.QtCore.QPointF(825.0, 455.0), PyQt5.QtCore.QPointF(23.0, 455.0)] selected shape prev point: [PyQt5.QtCore.QPointF(33.0, 131.0), PyQt5.QtCore.QPointF(835.0, 131.0), PyQt5.QtCore.QPointF(835.0, 455.0), PyQt5.QtCore.QPointF(33.0, 455.0)] I am trying to save all these points in a concatenated list and then just use the last list of QPointF to compare with the shapes from the file. To compare I want to convert QPointF points as shown above in a list like [[(1, 2), (3, 4), (5, 6), (7, 8)], [(9, 10), (11, 12), (13, 14), (15, 16)]] . I can do this part but how do I convert the QPointF to list of lists and where can I access these points in the file labelImg.py?

@eyllanesc png works in both versions. with svg, using set QT_DEBUG_PLUGINS=1 python3.9 my_file.py when checking the box it fails with "Cannot load library [...]\\Roaming\\Python\\Python39\\site-packages\\PySide6\\plugins\\imageformats\\qsvg.dll: Das angegebene Modul wurde nicht gefunden. [cannot find the module]" besides other similar errors (even though it exists). When I run it with Python3.8 it works. However, I noticed that PySide2/6 (and weirdly I think also the Python 3.9 installation) was located in Roaming for Python 3.9 and that it seems to look in various places for packages and the paths for site-packages in Roaming differ from the paths in AppData/Local/Programs. Therefore, although there was only one global (PATH) Python 3.9 installed, I tried by removing the Roaming stuff and reinstalled Python 3.9 and the packages, and now it seems to work...

Hi and welcome to devnet, Do you mean you want a button or a text like a hyperlink ?

Whats the content of form.ui ?

@iomh Please provide a minimum verifiable example

@midnightdim Yes, this is the correct way to compare sizes or dates. You may assume Qt infrastructure will only call lessThan() with source_left.column() == source_right.column(). You can put in an assert source_left.column() == source_right.column() to verify.

Hi and welcome to devnet, Are you looking for the currentChanged signal of your view's selection model ?

@philipsj33 You would not normally use any absolute positioning coordinates for widgets. It's not a good idea. Rather you would use Qt's QLayouts, as just about all widgets examples will do. have you started by reading https://doc.qt.io/qt-5/layout.html ?

Also I'm having trouble inserting the QTextFrame without it putting a newline in my QTextEdit. I don't know how to make it do that. The funny thing is it puts one before the QTextFrame but not one after it. Here's my code: def addmsg(textedit, nick, message): if config.show_timestamp: obj_now = datetime.now() textedit.insertPlainText(f"[{obj_now.hour: >2}:{obj_now.minute: >2}] ") textedit.cursor.insertText("<") nickframe = textedit.cursor.insertFrame(QTextFrameFormat()) nickframe.nick = nick framecursor = nickframe.firstCursorPosition() framecursor.insertText(nick) textedit.cursor.insertText("> ") colorify(textedit, message) textedit.cursor.insertHtml("<br>") Here's how it looks: < inhahe_> test

You have created the button variable without the "self." and you try to using it with the "self." you have to change this line: button = QPushButton('PyQt5 button', self) with this: self.button = QPushButton('PyQt5 button', self) and then you can access it with: self.button.move(400,250)

@DiGol have you started by reading https://doc.qt.io/qtforpython/tutorials/basictutorial/uifiles.html ?

yes , i've done all i can, and finally it's ok. and the problems seem to be in the widget where i put my buttons. all was create correctly but nothing was visible. i 've changed the kind of widget i use, and now it's ok. (i need to say that not is clear in my mind about how qt is working.) thanks for all @jsulm