It is possible, but it is not portable. The QBackingStore is just a wrapper class around a QImage buffer on most platforms, but I suppose this is not guaranteed. I’ve researched this issue when writing the QuickWidget. A cast is needed: QImage * image = dynamic_cast<QImage*>(backingStore()->paintDevice()); if (image != 0) // it’s an image, do … Read more
You have to use a QStackedWidget import os import sys from PyQt5 import QtCore, QtGui, QtWidgets, uic ui_folder = os.path.join(“frontend”, “ui”) about_company_ui, _ = uic.loadUiType(os.path.join(ui_folder, “about_company.ui”)) intern_placement_ui, _ = uic.loadUiType(os.path.join(ui_folder, “intern_placement.ui”)) class InternPlacement(QtWidgets.QMainWindow, intern_placement_ui): def __init__(self, parent=None): super(InternPlacement, self).__init__(parent) self.setupUi(self) class AboutCompany(QtWidgets.QMainWindow, about_company_ui): def __init__(self, parent=None): super(AboutCompany, self).__init__(parent) self.setupUi(self) if __name__ == “__main__”: app = … Read more
I stumbled upon the same problem and solved it by implementing the collapsible widget as a QScrollArea whose maximum height is animated by a QPropertyAnimation. But since I don’t use QDesigner, I can’t tell you if it works there. I still have one problem: Instead of only expanding towards the bottom direction, the collapsible widget … Read more
Set the WA_StyledBackground attribute on the container widget: ui = MainWindow() ui.setupUi(mainwindow) ui.widget.setAttribute(QtCore.Qt.WA_StyledBackground, True) (PS: for performance reasons, this attribute isn’t set by default for some widget classes – but the documentation doesn’t seem to specifiy which ones).
Qt Quick 2 uses a scene graph for efficient rendering on the GPU. Unfortunately this makes it impossible to embed classic widgets into the scene. The old approach to embed such widgets with the help of QGraphicsProxyWidget works only with Qt Quick 1, because internally it uses a QGraphicsView for all the heavy lifting and … Read more
This answer is in a series of my overlay-related answers: first, second, third. One way of doing it is: Have a semi-transparent overlay widget that is also transparent to mouse events. In the event filter, track the clicks and the resizing of the objects by adjusting the overlay’s geometry to match that of the target … Read more
Widgets when they are visible for the first time call to be visible to their children, but since you are creating it afterwards they probably are not calling that method, a possible solution is to call the show method. void ChatWidget::displayChatAfterButtonPressed() { QLabel *lbl; lbl=new QLabel(this); lbl->setText(“Hello World 2”); lbl->show(); } comment: it seems strange … Read more