I have

class View(QtWidgets.QLabel):def __init__(self):super(View,self).__init__()self.cropLabel = QtWidgets.QLabel(self)self.label = QtWidgets.QLabel(self)self.ogpixmap = QtGui.QPixmap()fileName = r'C:/Users/user11.HPO-SAMAT/Pictures/Lake.jpg'image = QtGui.QImage(fileName)self.pixmap = QtGui.QPixmap.fromImage(image)self.label.setPixmap(self.pixmap)self.label.adjustSize()

and then I call this class:

class Viewer(QtWidgets.QMainWindow):def __init__(self):super().__init__()self.view = View()self.scroller = QtWidgets.QScrollArea()self.scroller.setWidget(self.view)self.scroller.setWidgetResizable(True)self.scroller.adjustSize()

But QScrollArea does not seem to work (noscrollbar though the image is visible and I can expand QMainWindows to see it entirely) What am I doing wrong ?

I do not understand so they put several labels inside View, if we remove the labels that are other we get what you want.

class View(QtWidgets.QLabel):def __init__(self, parent=None):super(View,self).__init__(parent)fileName = "/home/qhipa/Pictures/1475777628875.jpg"self.pixmap = QtGui.QPixmap(fileName)self.setPixmap(self.pixmap)class Viewer(QtWidgets.QMainWindow):def __init__(self):super().__init__()self.view = View(self)self.scroller = QtWidgets.QScrollArea(self)self.setCentralWidget(self.scroller)self.scroller.setWidget(self.view)self.scroller.setWidgetResizable(True)self.scroller.adjustSize()

Instead if you want to get several labels, it is better that the View class inherits from QWidget.

class View(QtWidgets.QWidget):def __init__(self, parent=None):super(View,self).__init__(parent)self.setLayout(QtWidgets.QVBoxLayout())self.cropLabel = QtWidgets.QLabel(self)self.label = QtWidgets.QLabel(self)self.layout().addWidget(self.cropLabel)self.layout().addWidget(self.label)self.pixmap = QtGui.QPixmap("/home/qhipa/Pictures/1475777628875.jpg")self.label.setPixmap(self.pixmap)self.label.adjustSize()