Qt for Python

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  SOLVED Selection change on key press in QTreeView
  • midnightdim  

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  @JonB said in Selection change on key press in QTreeView: Separate question from why you need even filter at all, not just handle currentChanged/selectionChanged? I didn't know how to do that :-) But now I figured it out, thanks! P.S. Changing the order of key press handling in eventFilter doesn't seem to have the effect.
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  UNSOLVED Display custom list of files in QTreeView using QFileSystemModel or QAbstractItemModel
  • midnightdim  

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  @jazzycamel Thank you so much! This works for me and looks very close to what I need. Quick question: I'll probably need to add sorting to this view/model, would you recommend using QSortFilterProxyModel for that?
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  SOLVED QtMultimedia and QtMultimediaWidgets missing in PySide6 on Windows
  • midnightdim  

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  @SGaist Thanks, it seems to work just fine with PySide2 and some little adjustments. I wonder why in PySide6 repository that I found (git://code.qt.io/pyside/pyside-setup.git) the examples depend on these modules (and don't work).
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  UNSOLVED Issues with subclassing a QSqlTableModel
  • cibas  

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  @JonB Thank You!!! I will listen you advices
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  SOLVED PySite Version 2 or 6
  • Andy314  

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  @Andy314 The name is PySide. PySide 2 works with/uses Qt 5.x, PySide 6 works with/uses the new Qt 6. You may use either in your environment. If it were me I would use PySide 2/Qt 5.x at present. There are issues with Qt 6, and it does not yet cover all of the Qt modules (i.e. quite a few are not yet implemented and hence unavailable). This is only my opinion, others may differ. It is not a huge jump to move ion from Qt 5 to 6 at a later date.
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  SOLVED How to create an ImageProvider with PySide6?
  pyside • • xtofl  

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  @SGaist said in How to create an ImageProvider with PySide6?: QQmlImageProviderBase That was it, thanks! I'm still curious about what the error message meant, though. Lots to learn!
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  UNSOLVED Simplest way for two-way binding a text field
  pyside • • xtofl  

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  @xtofl In QML the binding is unidirectional: from right to left: Foo { id: foo a: bar.b } This binding indicates that every time the property "b" (which must be a signal) of the object "bar" then the property "a" of the object "foo" will be updated with that value. In python it would be something like: bar.b_Signal.connect(lambda: setattr(foo, "a", foo.b)) If you want to implement a 2-way binding then create a class that listens when one of those properties change ("a" or "b") and then updates the other.
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  UNSOLVED Mac M1 & PySide 2/6 can't Install lib
  • Dariusz  

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  Qt for Python is not yet supported. You can still develop in C++ or try to build PySide2/6 yourself.
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  UNSOLVED Fontsize on 'some' windows machines too big
  • Bouke  

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  Yeah, that seemed to be the case. I've added: os.environ["QT_AUTO_SCREEN_SCALE_FACTOR"] = "1" qapp = QApplication(sys.argv) qapp.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling) and now it looks normal at the clients side. (I don't have a similar system, so I can't really test.) Next step is to make QT aware of the Zoom factor as set in Windows. Any hints on that? Bouke
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  UNSOLVED Switching PySide2 to PyQt5 in Qt Creator
  python qt for python pyside2 • • hendry33  

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  It depends on how you create your project/file. If you create a project of the type Application "Qt for Python", you will end up with a main.py where PySide2 is imported and I could not find the template file in the Qt installation files. If you simply create a new file of the type Python | Python Class you will be offered to choose between PyQt5 and Pyside2. The template file is in your Qt installation folder: Qt\Tools\QtCreator\share\qtcreator\templates\wizards\classes\python. Sorry, QtCreator is great but not perfect for Python yet from what I can tell :-/
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  UNSOLVED How to create custom widget plugin for Qt Designer with Qt for Python?
  qt for python pyside2 • • StarterKit  

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  @JonB said in How to create custom widget plugin for Qt Designer with Qt for Python?: You may have your own good reasons for wanting to use Python, but I don't know what you are implying here. A C++ solution would indeed work, and allow custom widget design for use in Designer, across all these platforms. Ok, I see that I put it in unclear way. I meant to say I already have several different widgets created with python and don't wish to re-write them in C++. I agree with you that I may re-create it with C++ and it will work but I really don't wish to do it. Thanks for the link to stackoverflow, I'll take a look there. Promotion works good but it's not so comfortable to fine-tune placement of different parts in UI - this is why I'm looking for other possible options.
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  UNSOLVED setStyleSheet doesn't change font on QListWidget, but changes background color
  • midnightdim  

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  Can you provide a minimal runnable script so we can reproduce this locally ?
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  UNSOLVED QStateMachine is missed on pyside6 Linux version
  • Roger Huang  

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  @Roger-Huang As I see in the comments of https://www.qt.io/blog/add-on-support-in-qt-6.0-and-beyond: Maurice Kalinowski[moderator] The state machine framework has been moved to Qt ScXML, which again will be renamed to Qt State machine, as it incorporates both engines. From above list, it will be part of 6.1. So probably when Qt ScXML is implemented in Qt 6.1 then it will be available in PySide6 6.1.0
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  UNSOLVED 3D in PySide questions
  python pyside • • DoubleFelix  

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  Hi, You have both Qt's OpenGL module and Qt3D at your disposal for that.
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  UNSOLVED PySide6: Why QSpacerItem uses kwargs [hv]Data instead of [hv]Policy?
  • anonyumu  

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  @anonyumu It seems that it is a PySide6 bug that has changed the name of the kwargs, for example using help you get the names of the kwargs: dir(QSpacerItem) output Help on class QSpacerItem in module PySide6.QtWidgets: class QSpacerItem(QLayoutItem) | QSpacerItem(self, w: int, h: int, hData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum, vData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum) -> None | | QSpacerItem(self, w: int, h: int, hData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum, vData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum) -> None | | Method resolution order: | QSpacerItem | QLayoutItem | Shiboken.Object | builtins.object | | Methods defined here: | | __delattr__(self, name, /) | Implement delattr(self, name). | | __init__(self, w: int, h: int, hData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum, vData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum) -> None | __init__(self, w: int, h: int, hData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum, vData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum) -> None | | Initialize self. See help(type(self)) for accurate signature. | | __setattr__(self, name, value, /) | Implement setattr(self, name, value). | | changeSize(self, w: int, h: int, hData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum, vData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum) -> None | changeSize(self, w: int, h: int, hData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum, vData: PySide6.QtWidgets.QSizePolicy.Policy = PySide6.QtWidgets.QSizePolicy.Policy.Minimum) -> None | | expandingDirections(self) -> PySide6.QtCore.Qt.Orientations | expandingDirections(self) -> PySide6.QtCore.Qt.Orientations | | geometry(self) -> PySide6.QtCore.QRect | geometry(self) -> PySide6.QtCore.QRect | | isEmpty(self) -> bool | isEmpty(self) -> bool | | maximumSize(self) -> PySide6.QtCore.QSize | maximumSize(self) -> PySide6.QtCore.QSize | | minimumSize(self) -> PySide6.QtCore.QSize | minimumSize(self) -> PySide6.QtCore.QSize | | setGeometry(self, arg__1: PySide6.QtCore.QRect) -> None | setGeometry(self, arg__1: PySide6.QtCore.QRect) -> None | | sizeHint(self) -> PySide6.QtCore.QSize | sizeHint(self) -> PySide6.QtCore.QSize | | sizePolicy(self) -> PySide6.QtWidgets.QSizePolicy | sizePolicy(self) -> PySide6.QtWidgets.QSizePolicy | | spacerItem(self) -> PySide6.QtWidgets.QSpacerItem | spacerItem(self) -> PySide6.QtWidgets.QSpacerItem | | ---------------------------------------------------------------------- | Static methods defined here: | | __new__(*args, **kwargs) from Shiboken.ObjectType | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Methods inherited from QLayoutItem: | | alignment(self) -> PySide6.QtCore.Qt.Alignment | alignment(self) -> PySide6.QtCore.Qt.Alignment | | controlTypes(self) -> PySide6.QtWidgets.QSizePolicy.ControlTypes | controlTypes(self) -> PySide6.QtWidgets.QSizePolicy.ControlTypes | | hasHeightForWidth(self) -> bool | hasHeightForWidth(self) -> bool | | heightForWidth(self, arg__1: int) -> int | heightForWidth(self, arg__1: int) -> int | | invalidate(self) -> None | invalidate(self) -> None | | layout(self) -> PySide6.QtWidgets.QLayout | layout(self) -> PySide6.QtWidgets.QLayout | | minimumHeightForWidth(self, arg__1: int) -> int | minimumHeightForWidth(self, arg__1: int) -> int | | setAlignment(self, a: PySide6.QtCore.Qt.Alignment) -> None | setAlignment(self, a: PySide6.QtCore.Qt.Alignment) -> None | | widget(self) -> PySide6.QtWidgets.QWidget | widget(self) -> PySide6.QtWidgets.QWidget | | ---------------------------------------------------------------------- | Data descriptors inherited from QLayoutItem: | | align | | ---------------------------------------------------------------------- | Methods inherited from Shiboken.Object: | | __getattribute__(self, name, /) | Return getattr(self, name). | | ---------------------------------------------------------------------- | Data descriptors inherited from Shiboken.Object: | | __dict__ Considering the above then the solution is: QSpacerItem(0, 0, hData = QSizePolicy.Expanding) QSpacerItem(0, 0, vData = QSizePolicy.Fixed) Same for scaled: help(QPixmap.scaled) Help on method_descriptor: scaled(...) scaled(self, s: PySide6.QtCore.QSize, aspectMode: PySide6.QtCore.Qt.AspectRatioMode = PySide6.QtCore.Qt.AspectRatioMode.IgnoreAspectRatio, mode: PySide6.QtCore.Qt.TransformationMode = PySide6.QtCore.Qt.TransformationMode.FastTransformation) -> PySide6.QtGui.QPixmap scaled(self, w: int, h: int, aspectMode: PySide6.QtCore.Qt.AspectRatioMode = PySide6.QtCore.Qt.AspectRatioMode.IgnoreAspectRatio, mode: PySide6.QtCore.Qt.TransformationMode = PySide6.QtCore.Qt.TransformationMode.FastTransformation) -> PySide6.QtGui.QPixmap then QPixmap().scaled(QSize(640, 480), aspectMode=Qt.AspectRatioMode.IgnoreAspectRatio) QPixmap().scaled(QSize(640, 480), mode=Qt.TransformationMode.FastTransformation)
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  UNSOLVED open new window in pyqt5
  • Samuel Bachorik  

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  Hello guys. I have another but so close question. The main problem is all this tactics is not working on qtdesigner based .py files. For examples: As you see there is just one buton. There is nothing more. Just i wanted, when i push the button launch the same things. This the first untouched code: -- coding: utf-8 -- Form implementation generated from reading ui file 'x.ui' Created by: PyQt5 UI code generator 5.15.2 WARNING: Any manual changes made to this file will be lost when pyuic5 is run again. Do not edit this file unless you know what you are doing. from PyQt5 import QtCore, QtGui, QtWidgets class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(260, 226) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.pushButton = QtWidgets.QPushButton(self.centralwidget) self.pushButton.setGeometry(QtCore.QRect(90, 120, 75, 23)) self.pushButton.setObjectName("pushButton") MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 260, 21)) self.menubar.setObjectName("menubar") MainWindow.setMenuBar(self.menubar) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") MainWindow.setStatusBar(self.statusbar) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) self.pushButton.setText(_translate("MainWindow", "PushButton")) if name == "main": import sys app = QtWidgets.QApplication(sys.argv) MainWindow = QtWidgets.QMainWindow() ui = Ui_MainWindow() ui.setupUi(MainWindow) MainWindow.show() sys.exit(app.exec_()) I just copied the class It's offer me build init I aceepted Finally any solution didn't help me. Especially designer based codes hasn't solution. from PyQt5 import QtCore, QtGui, QtWidgets class Ui_MainWindow2(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(260, 226) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.pushButton = QtWidgets.QPushButton(self.centralwidget) self.pushButton.setGeometry(QtCore.QRect(90, 120, 75, 23)) self.pushButton.setObjectName("pushButton") MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 260, 21)) self.menubar.setObjectName("menubar") MainWindow.setMenuBar(self.menubar) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") MainWindow.setStatusBar(self.statusbar) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) self.pushButton.setText(_translate("MainWindow", "PushButton")) class Ui_MainWindow(object): def init(self): self.nextWindow = Ui_MainWindow2() def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(260, 226) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.pushButton = QtWidgets.QPushButton(self.centralwidget) self.pushButton.setGeometry(QtCore.QRect(90, 120, 75, 23)) self.pushButton.setObjectName("pushButton") MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 260, 21)) self.menubar.setObjectName("menubar") MainWindow.setMenuBar(self.menubar) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") MainWindow.setStatusBar(self.statusbar) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) self.pushButton.setText(_translate("MainWindow", "PushButton")) self.pushButton.clicked.connect(self.launcher) def launcher(self): self.nextWindow.show() if name == "main": import sys app = QtWidgets.QApplication(sys.argv) MainWindow = QtWidgets.QMainWindow() ui = Ui_MainWindow() ui.setupUi(MainWindow) MainWindow.show() sys.exit(app.exec_())
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  UNSOLVED Saving an image after painting on it
  • benyeyeye  

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  For the copy, please read the class documentation. It's QImage::copy. For painting on the QImage: painter = QPainter(image) # paint what you want painter.end()
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  UNSOLVED Explicitly running a procedure in a different QThread
  • nutrx  

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  Oh I see, I did not get the while part. Just to sum up a bit so we are on the same line: you have API calls that are done while also building your GUI the result of that call shall trigger further widget creation these widget creation cannot happen before your main widget is fully initialized Is that all correct ? Will you have other widgets created after that ?
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  UNSOLVED Qt -platform webgl support in pyqt
  qt for python • • McTob  

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  Looks like this problem goes deeper than a simple pyqt issue. I have posted my issue on SO: https://stackoverflow.com/questions/66222702/how-to-get-webgl-support-in-pyqt5 And reported as a bug on qt jira: https://bugreports.qt.io/browse/QTBUG-91162 With additional informations related to javascript logs.
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  Make only some part of text in QtextEdit Uneditable
  • saeid0034  

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  @JonB after some search I think its a good way to use it but sadly i cant find any good example of it in python (I can prove a set of line edits for every line, because some lines are so big and its make the program hard to work with)
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  SOLVED simplest way to highlight some part of text in QTextEdit
  • saeid0034  

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  I haven't found it already translated but it's not the most complicated C++ code. The translation to Python is pretty straightforward.
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  UNSOLVED make user able to edit qtreewidget
  • iwrwrc  

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  @iwrwrc So --- as far as I know there is nothing supplied for this --- you have to do the code yourself. You could, for example, have an Add button, or as @SGaist wrote probably best if you do it via right-click context menus on nodes/leaves to insert/edit/delete.
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  SOLVED App crashes on QCheckBox.setChecked()
  • midnightdim  

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  @jsulm Yes, I did debug it and there was no stack trace, the app just crashed silently. But your reply gave me a good hint. I checked the connected slot and found that it uses the index of the old model while it should have been switched to a new proxy model. This solved the issue. Thanks a lot for the tip!
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  UNSOLVED Keep track of number of rectangles drawn over an image using Mouse Events
  • duddal_  

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  @duddal_ Hi If you keep your own list, i guess nothing bad will happen :) But if the goal is only to keep track of rectangles (shapes) im not sure i understand why you want to keep a list to track it. Say we have a new variable. ShapeCountBefore=0; Then when your SaveButton is pressed we compare ShapeCountBefore and Shapes.Size() if they are the same, no new rect was added. if ( ShapeCountBefore LESS than Shapes.Size() ) then a new rect was added. and then we update ShapeCountBefore=Shapes.Size() if ( ShapeCountBefore BIGGER than Shapes.Size() ) it means rect was removed Maybe i dont 100% understand what you want as you say drawn for the rect and not added.
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  UNSOLVED Keep Focus of textbrowser on top?
  • levoxtrip  

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  SOLVED QTreeView doesn't expand
  • midnightdim  

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  @mrjj Thanks a lot! This seems to work.
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  SOLVED QTreeView sorting questions
  • midnightdim  

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  Found the solution and posted it to StackOverflow. Pasting it here as well. class SortingModel(QSortFilterProxyModel): def lessThan(self, source_left: QModelIndex, source_right: QModelIndex): file_info1 = self.sourceModel().fileInfo(source_left) file_info2 = self.sourceModel().fileInfo(source_right) if file_info1.fileName() == "..": return self.sortOrder() == Qt.SortOrder.AscendingOrder if file_info2.fileName() == "..": return self.sortOrder() == Qt.SortOrder.DescendingOrder if (file_info1.isDir() and file_info2.isDir()) or (file_info1.isFile() and file_info2.isFile()): return super().lessThan(source_left, source_right) return file_info1.isDir() and self.sortOrder() == Qt.SortOrder.AscendingOrder The code for initializing view and model: model = QFileSystemModel() model.setRootPath('.') model.setFilter(QDir.NoDot | QDir.AllEntries) model.sort(0, Qt.SortOrder.AscendingOrder) sorting_model = SortingModel() sorting_model.setSourceModel(model) view.tree_view.setModel(sorting_model) view.tree_view.setRootIndex(sorting_model.mapFromSource(model.index('.'))) view.tree_view.header().setSortIndicator(0, Qt.AscendingOrder) view.tree_view.setSortingEnabled(True)
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  SOLVED Use uic.loadUi and get mouseMoveEvent
  • Mikeeeeee  

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  @Mikeeeeee said in Use uic.loadUi and get mouseMoveEvent: Please give a full-fledged example. I will not. class MyEventFilter(QObject): def eventFilter(QObject obj, QEvent event): print("HERE") return QObject::eventFilter(obj, event) ... myEventFilter = MyEventFilter() self.ui.installEventFilter(myEventFilter)
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  UNSOLVED How to track user inactivity
  • Mikeeeeee  

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  @Mikeeeeee So you will have to write code to detect exactly those things you want to monitor. Probably through an event filter. And if none arrive the user is inactive, in those terms. I don't know what else to say.
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  UNSOLVED save changes done to items in a treewidget
  • iwrwrc  

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  @iwrwrc Changes made from a QTreeWidget should go through to the underlying model and be saved there. They will persist across tab changes, unless you have something wrong in your code.
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  UNSOLVED Display images(or image streams) in QML from Python
  • SpencerD  

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  Can you pass a singleton into a QML register Type? or rather import a singleton so that this python file can access the continuously changing data from another python file or class instance. For example "from main import myTestClasse" so far the data is not updating to match the singleton myTestClasse and was wondering if there is an extra step that needs to be taken? From the example listed above with modifications :... """ import numpy as np import threading #from PySide6 import Qt import cv2 """ from PySide6 import QtCore, QtGui, QtQml from PySide6.QtCore import QObject, Signal, Slot, Property from main import myTestClasse def max_rgb_filter(image): # split the image into its BGR components (B, G, R) = cv2.split(image) # find the maximum pixel intensity values for each # (x, y)-coordinate,, then set all pixel values less # than M to zero M = np.maximum(np.maximum(R, G), B) R[R < M] = 0 G[G < M] = 0 B[B < M] = 0 # merge the channels back together and return the image return cv2.merge([B, G, R]) gray_color_table = [QtGui.qRgb(i, i, i) for i in range(256)] class CVCapture(QtCore.QObject): #once the camera caputre is started from completion of the QML , send signal that the image capture has started started = Signal() imageReady = Signal() indexChanged = Signal() def __init__(self,parent=None): super(CVCapture, self).__init__(parent) self._image = QtGui.QImage() self._index = 0 #self.image_handler = image_handler #self.m_videoCapture = cv2.VideoCapture() self.m_timer = QtCore.QBasicTimer() #self.m_filters = [] self.m_busy = False #self.testImage = None #self.frame = None @Slot() @Slot(int) def start(self, *args): print('start the image display') if args: self.setIndex(args[0]) self.m_timer.start(50, self) self.started.emit() @Slot() def stop(self): self.m_timer.stop() def timerEvent(self, e): #print(f'image handler data is {image_handler.oneSecondCounter}') if e.timerId() != self.m_timer.timerId(): return #print('timerEvent Happening') #grabbedImage = image_handler.thumbnailImage.copy() #ret, frame = self.m_videoCapture.read() #ret = False #print(f'testimage size{testImage.shape}') if myTestClasse.image is not None: self.testImage = myTestClasse.image.copy() #print(f'thumbnail image :{self.testImage}') #self.frame = self.testImage.copy() #ret = True #cv2.imwrite('test3.png',self.testImage) else: return #if not ret: #print('timerEvent Stopping') #self.m_timer.stop() #return if self.m_busy == False: #print('start thread show image') #cv2.imwrite('test4.png',self.testImage) if self.testImage is not None: #localTest = self.testImage.copy() #print('start thread show image2') #cv2.imwrite('test4to5.png',self.testImage) #threading.Thread(target=self.process_image, args=(np.copy(self.testImage),)).start() self.process_image(self.testImage.copy()) @Slot(np.ndarray) def process_image(self, frame): #print('process image') cv2.imwrite('test5.png',frame) self.m_busy = True #print(f'flag is{self.m_busy}') #for f in self.m_filters: # frame = f.process_image(frame) image = CVCapture.ToQImage(frame) #if self._image == image: # self.m_busy = False # return self._image = image self.m_busy = False self.setImage() #QtCore.QMetaObject.invokeMethod(self,"setImage",QtCore.Qt.QueuedConnection) @staticmethod def ToQImage(im): if im is None: return QtGui.QImage() if im.dtype == np.uint8: if len(im.shape) == 2: qim = QtGui.QImage(im.data, im.shape[1], im.shape[0], im.strides[0], QtGui.QImage.Format_Indexed8) qim.setColorTable(gray_color_table) return qim.copy() elif len(im.shape) == 3: if im.shape[2] == 3: w, h, _ = im.shape rgb_image = cv2.cvtColor(im, cv2.COLOR_BGR2RGB) flip_image = cv2.flip(rgb_image, 1) qim = QtGui.QImage(flip_image.data, h, w, QtGui.QImage.Format_RGB888) return qim.copy() return QtGui.QImage() def getImage(self): return self._image @Slot() def setImage(self): self.imageReady.emit() def index(self): return self._index def setIndex(self, index): if self._index == index: return self._index = index self.indexChanged.emit() image = Property(QtGui.QImage, fget=getImage, notify=imageReady) index = Property(int, fget=index, fset=setIndex, notify=indexChanged) """
• 

  UNSOLVED QStandardItem QtCore.Qt.ForegroundRole issue when out of focus
  • alom  

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  No one has replied

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  UNSOLVED PyQt5 - QPushButton to add row to a QTableView
  • PiroDev  

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  You can implement 'add row to QTableView' action for button in that way: from PyQt5.QtGui import QStandardItemModel, QStandardItem ... table = QTableView(...) table.setModel(QStandardtemModel()) addRowButton = QPushButton('Add row', ...) addRowButton.clicked.connect(lambda: table.model().insertRow(0, [QStandardItem('1'), QStandardItem('example'), ...])
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  SOLVED Problem with custom ListView model and a custom item
  pyside • • Tauri  

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  @Tauri Read https://doc.qt.io/qt-5/qtquick-modelviewsdata-cppmodels.html#qvariantlist-based-model
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  SOLVED qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in the virtualenv
  • Black Cat  

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  @Black-Cat execute sudo apt-get install '^libxcb.*-dev'
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  This topic is deleted!
  • coutKateM  

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  UNSOLVED How can i set baseUrl only once?
  • benyeyeye  

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  You always have to set the baseUrl if you want to use setHtml, but if you want to repeat the code then create a method that does it: class Foo(Bar): def __init__(self, ...): super().__init(...) self._base_url = QUrl() self.base_url = QUrl.fromLocalFile(os.getcwd()+os.path.sep) self.webPage = ... @property def base_url(self): return self._base_url @base_url.setter def base_url(self, url): self._base_url = url def update_html(self, html): self.webPage.setHtml(html, self.base_url) then: self.update_html('<img src="image.png"/>');
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  UNSOLVED How to change styleCheet on Event?
  • levoxtrip  

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  @levoxtrip I don't know anything about your "fading", but QTextEdit::append() always appends the text at the end. To insert somewhere else it looks like you must use QTextEdit::insertHtml/insertPlainText(), and those insert at the current cursor position, so you may need to move it with QTextEdit::moveCursor/setPosition() or similar.
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  SOLVED How to add checkbox to context menu?
  • midnightdim  

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  @danielcharles Why do you post a link to a video handling C#? This is Qt forum...
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  UNSOLVED How to know the version of Qt Designer?
  • _jao_victor_  

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  Hi, IIRC, the about dialog that you can trigger from the help menu should give you this answer.