pyqt | 易学教程

“Blinking” buttons in PyQT5

阅读更多关于 “Blinking” buttons in PyQT5

问题 Here's the deal: I'm trying to make button A "blink" when button B is pushed, and the blinking should then stop when the user pushes button A. Furthermore, button A should then go back to its former state. After long reading through the documentation and other questions at SO, I have now following piece of code: Python 2.7 class Widget(QWidget): def __init__(self): super(Widget, self).__init__() self.resize(300,200) layout = QVBoxLayout(self) self.button_stop = QPushButton("Stop") layout

Qmessagebox background and text color

阅读更多关于 Qmessagebox background and text color

问题 I have message response as you see on the above. I've managed to colour background to black: msg.setStyleSheet("background-color: rgb(0, 0, 0);") I've tried with same way for the text but it looks like this: msg.setStyleSheet("text-color: rgb(255, 255, 255);") My only purpose is texts are white and background is black... Here is my part of code: msg = QMessageBox() msg.setText("Message has been sended") msg.setWindowTitle("SENT") msg.setWindowIcon(QtGui.QIcon("black tic.png")) msg.setIcon

How to display a cv2 video inside a python GUI? [duplicate]

阅读更多关于 How to display a cv2 video inside a python GUI? [duplicate]

问题 This question already has answers here : PyQt showing video stream from opencv (3 answers) Closed last year . I'm creating a GUI using Python/PyQt5 which should display a video along with other widgets in the same window. I've tried different approaches to this problem but stil can't seem to get it to work. Approach 1: Adding the video in a pixmap using OpenCV/cv2 only shows the first frame of the video. Approach 2: I have managed to get the video to play using cv2 however, it opens up in a

Window Icon Not Displaying when Frozen with cx_Freeze

阅读更多关于 Window Icon Not Displaying when Frozen with cx_Freeze

问题 I’m using Python 3.6, PyQt5, and cx_Freeze in a Windows environment. The portion of code I use to display the icon on the main window and children windows is: if getattr(sys, 'frozen', False): # If frozen with cx_Freeze homePath = os.path.dirname(sys.executable) else: # Otherwise, if running unfrozen (e.g., within Spyder) homePath = os.path.dirname(__file__) iconFileName = os.path.join(homePath, 'iconLarge.ico') setWindowIcon(QIcon(iconFileName)) The frozen program defaults to a Windows

Fatal Python Error when running pytest with QT

阅读更多关于 Fatal Python Error when running pytest with QT

问题 I'm new to pytest and I'm having trouble trying to run one of my test files. I'm getting the following output: ================================================== test session starts ================================================== platform linux -- Python 3.7.6, pytest-5.3.5, py-1.8.1, pluggy-0.13.1 -- /home/jarel/anaconda3/bin/python cachedir: .pytest_cache hypothesis profile 'default' -> database=DirectoryBasedExampleDatabase('/home/jarel/workspace/spyder/rpgland/.hypothesis/examples')

PyQT5速成教程-4 Qt Designer实战[上]

阅读更多关于 PyQT5速成教程-4 Qt Designer实战[上]

前言在前面几节的学习中，我们对PyQt的基本使用、Qt Designer与Python编码的工作流程有了基本的学习。同时也掌握了Qt Designer中的布局方式和使用Python代码来实现布局。让我们在下面的时间里，通过Qt Designer来设计一个计算整数的计算器吧。使用网格布局（Grid Layout）首先分析我们的整数计算器需要的一些按钮：数字键：0-9共10个。操作符：+ - * / = CE共6个当我们在Qt Designer的主窗口中创建上述16个按钮之后，按照4行4列的顺序进行摆放。摆放按钮并且修改按钮的属性中的objectName为相对于的名称。如数字0的objectName设置为Num_0，操作符+的objectName设置为OP_plus。对于按钮的显示名称的修改，在主窗口中双击相应按钮则可以快速修改。由于计算器中的按钮是正方形的（我们通常会选择正方形），而且不想让这些按钮根据窗口的大小进行变化，通过全选16个按钮（在主窗口中使用鼠标左键拖出选择框，选中16个按钮）在右侧找到mininumSize和maximumSize属性。点击其左面的箭头符号展开选项，将其宽和高固定为60。这样就不会因为缩放窗口而造成按钮的大小变化了。属性在对所有按钮完成相应操作之后，我们选中16个按钮，点击右键，使用网格布局来实现布局。

QCheckbox to check all other QCheckBoxes

阅读更多关于 QCheckbox to check all other QCheckBoxes

问题 My question is very similar to this post, Python PyQt - Checkbox to uncheck all other checkboxes. However, I am trying to check all other boxes when main checkbox is selected and at the same time, if any of the other boxes are selected independently, then I would like to deselect the main checkbox. I tried modifying the answer provided, but not able to put my head around the 'self.sender' signal. I am not able to change the selection when I deselect a checkbox. Here is the code that I

QCheckbox to check all other QCheckBoxes

阅读更多关于 QCheckbox to check all other QCheckBoxes

QCheckbox to check all other QCheckBoxes

阅读更多关于 QCheckbox to check all other QCheckBoxes

Python/PySide: How can i destroy a terminated thread object?

阅读更多关于 Python/PySide: How can i destroy a terminated thread object?

问题 I would like to implement a button to stop a thread with a process, it works but not as expected: i can't delete the thread object. ( EDIT: The reference to the thread object seems to be deleted, but the signals are not disconnected automatically by deleting the thread object, i can access it anyway via the signal.) I have a modul with a class thread_worker and a function for complex processing which is running as process: from PySide.QtCore import * from PySide.QtGui import * import