pyqt

问题 I am trying to make a simple communication between a worker thread, in this case it is called WorkToDo via the PyQt5 Signals and Slots mechanism. I can reliably send data from the Worker to the Gui thread via this mechanism, but I cannot do the same to the gui thread. From my research I have found that this is due to the fact that I have overridden the run function with my own logic. My question, is there any way to manually handle the execution of signals in the worker thread? Is there a

问题 I want to highlight every day in a CalendarWidget that is between a selected start and end date. My problem is that a CalendarWidget only allows SingleSelection in QTCreator but says that other things can be changed programmatically though. I found some hints to use a QPainter and the paintCell() Method but i till dont know where to begin. The Internet wasn't helpful in my case. I tried to change a single date first on buttonClick but even this didnt work, can you give me an advice how to use

问题 I would like to add a spacer line between two layouts: Separador = QFrame() Separador.Shape(QFrame.HLine) Separador.setSizePolicy(QSizePolicy.Minimum,QSizePolicy.Expanding) Separador.setLineWidth(3) HPOUT1_layout = QVBoxLayout() HPOUT1_layout.addLayout(HPOUT1L_layout) HPOUT1_layout.addWidget(Separador) HPOUT1_layout.addLayout(HPOUT1R_layout) However, this code only separate the layouts a little, but there is no line visible between them. Is there another way, What I'm doing wrong? 回答1: You

问题 I would like to add a spacer line between two layouts: Separador = QFrame() Separador.Shape(QFrame.HLine) Separador.setSizePolicy(QSizePolicy.Minimum,QSizePolicy.Expanding) Separador.setLineWidth(3) HPOUT1_layout = QVBoxLayout() HPOUT1_layout.addLayout(HPOUT1L_layout) HPOUT1_layout.addWidget(Separador) HPOUT1_layout.addLayout(HPOUT1R_layout) However, this code only separate the layouts a little, but there is no line visible between them. Is there another way, What I'm doing wrong? 回答1: You

问题 I would like to add a spacer line between two layouts: Separador = QFrame() Separador.Shape(QFrame.HLine) Separador.setSizePolicy(QSizePolicy.Minimum,QSizePolicy.Expanding) Separador.setLineWidth(3) HPOUT1_layout = QVBoxLayout() HPOUT1_layout.addLayout(HPOUT1L_layout) HPOUT1_layout.addWidget(Separador) HPOUT1_layout.addLayout(HPOUT1R_layout) However, this code only separate the layouts a little, but there is no line visible between them. Is there another way, What I'm doing wrong? 回答1: You

问题 I'm learning PyQt5 to develop a small academy project. I need to set a background for the QGraphicScene, but I'm not able to make the image fit well into the scene. It is sometimes repeaded or too large depending on the scale I apply. Here is my code: class MainWindow(QWidget): def __init__(self): super().__init__() self.title = "title"; self.top = 100 self.left = 100 self.width = 1500 self.height = 900 self.initUI() def initUI(self): scene = QGraphicsScene(0, 0, width, heigth) view =

问题 I have a subclass of QGraphicsItem and I want to add instances of it to the scene on 'Control+LMB click'. The trouble is that the item is added at the position with coordinates that are two times larger than they should be. At the same time adding ellipses with scene.addEllipse(...) works fine. #!/usr/bin/env python import sys from PyQt4.QtCore import (QPointF, QRectF, Qt, ) from PyQt4.QtGui import (QApplication, QMainWindow, QGraphicsItem, QGraphicsScene, QGraphicsView, QPen, QStyle) MapSize

问题 I got the following code, which I slightly modified, as an answer on how to use HTML formatted text in a QListWidget. main.ui <?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>Dialog</class> <widget class="QDialog" name="Dialog"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>341</width> <height>161</height> </rect> </property> <property name="windowTitle"> <string>Dialog</string> </property> <widget class="QWidget" name="verticalLayoutWidget"> <property name=

问题 I'm trying to pop up a context menu when a user right-clicks on an item in a QListView and a different context menu if the user right-clicks outside of any of the items (any of the whitespace). What I'm finding is that the index I'm receiving when performing the indexAt command is not accurate, and I can't figure out why. I initialize the QListView as its own class: class RBKDataTypesTab(QWidget): def __init__(self): super().__init__() self.models = [] grid = QGridLayout() self.list =

问题 I'm trying to pop up a context menu when a user right-clicks on an item in a QListView and a different context menu if the user right-clicks outside of any of the items (any of the whitespace). What I'm finding is that the index I'm receiving when performing the indexAt command is not accurate, and I can't figure out why. I initialize the QListView as its own class: class RBKDataTypesTab(QWidget): def __init__(self): super().__init__() self.models = [] grid = QGridLayout() self.list =