pyqt5

问题 I'm working on a plugin for QGIS and i'm using QtCreator. I wanted to implement a function that allows the user to drag the window to the edge of the screen to resize it (such as ordinary windows). My setup being a multiple screen desktop, I came up with this code: from PyQt5 import QtCore, QtGui tracking = False class Window(QtGui.QWidget): def __init__(self): super(Window, self).__init__() self.timer = QtCore.QTimer(self) self.timer.setInterval(50) self.timer.timeout.connect(self.Resize)

问题 I have a Qt 5.8 (via PyQt5) application whose many tests require a live QApplication instance in order to test gui widget interactions. However on my new Mac OS X (10.11.6) machine when running these tests windows are constantly being created and destroyed, causing the entire system's UI to become highly unstable (although the tests pass as expected). My tests do not even call QApplication.exec() - the QApplication() constructor is enough to cause this. On my linux machine this is no issue,

问题 I have a Qt 5.8 (via PyQt5) application whose many tests require a live QApplication instance in order to test gui widget interactions. However on my new Mac OS X (10.11.6) machine when running these tests windows are constantly being created and destroyed, causing the entire system's UI to become highly unstable (although the tests pass as expected). My tests do not even call QApplication.exec() - the QApplication() constructor is enough to cause this. On my linux machine this is no issue,

问题 In a Python3/QT5 application, I'm trying to show a SVG image built originally as a string. I need to manipulate this SVG image (e.g. change its color), so I have the string changing over time. Here is a minimal working example: import sys from PyQt5.QtWidgets import QApplication from PyQt5.QtSvg import QSvgWidget svg_str = """<?xml version="1.0" encoding="UTF-8" standalone="no"?> <svg width="300" height="300" viewBox="0 0 300 300" id="smile" version="1.1"> <path style="fill:#ffaaaa" d="M 150

问题 In PyQt5 I'm getting some unexpected behavior from QTabWidget, the background seems to be white instead of the default form color (roughly light gray). Here is an example: # QTabWidget2.py from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QLabel, QHBoxLayout, QVBoxLayout, QTabWidget, \ QGraphicsView, QFrame, QGridLayout from PyQt5.QtGui import QPalette from PyQt5.Qt import Qt def main(): app = QApplication([]) mainForm = MainForm() mainForm.show() app.exec() # end main class

问题 In PyQt5 I'm getting some unexpected behavior from QTabWidget, the background seems to be white instead of the default form color (roughly light gray). Here is an example: # QTabWidget2.py from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QLabel, QHBoxLayout, QVBoxLayout, QTabWidget, \ QGraphicsView, QFrame, QGridLayout from PyQt5.QtGui import QPalette from PyQt5.Qt import Qt def main(): app = QApplication([]) mainForm = MainForm() mainForm.show() app.exec() # end main class

问题 I am displaying webcam image from cv2 on QPixmap. I have PyQt5 and Python2.7. Now the issue is the display size doesn't change with Window size. I like to change image size together with display window size. Now is always 640x480. Attached images show image size is fixed. I like to have just slightly smaller than window size and change together with window size. My code is as follow. from PyQt5 import QtCore, QtGui, QtWidgets import cv2 class Thread(QtCore.QThread): changePixmap = QtCore

问题 I am displaying webcam image from cv2 on QPixmap. I have PyQt5 and Python2.7. Now the issue is the display size doesn't change with Window size. I like to change image size together with display window size. Now is always 640x480. Attached images show image size is fixed. I like to have just slightly smaller than window size and change together with window size. My code is as follow. from PyQt5 import QtCore, QtGui, QtWidgets import cv2 class Thread(QtCore.QThread): changePixmap = QtCore

问题 The widgetAt function gives me the widget directly under the cursor, at the highest z-order. pos = QtGui.QCursor.pos() widget = QtGui.qApp.widgetAt(pos) But how can I get all widgets under the cursor? Including those behind the top-most one? Something like: pos = QtGui.QCursor.pos() widgets = QtGui.qApp.widgetsAt(pos) Example As an example of use, picture an overlay which adds animated graphics, like ripples on the surface of water, wherever the user clicked. Naturally, the overlay would need

问题 The widgetAt function gives me the widget directly under the cursor, at the highest z-order. pos = QtGui.QCursor.pos() widget = QtGui.qApp.widgetAt(pos) But how can I get all widgets under the cursor? Including those behind the top-most one? Something like: pos = QtGui.QCursor.pos() widgets = QtGui.qApp.widgetsAt(pos) Example As an example of use, picture an overlay which adds animated graphics, like ripples on the surface of water, wherever the user clicked. Naturally, the overlay would need