def paintEvent(self, paintEvent):
painter = QPainter(self)
painter.translate(self.width()/2, self.height()/2)
painter.rotate(45)
painter.translate(-self.width()/2, -self.height()/2) -sharp as shown in the figure and code, according to my understanding,
the result should be green, but it is actually red
how should I explain it?
No pyqt, seems to be a problem with the center of rotation.
Press upper left corner to rotate to get green .
Press the midpoint of the rectangle to rotate to get red .
Previous: Indentation of vs code formatted vue code
Next: React Router v4 reported an error on the basis of writing.
I use pyinstaller to package the environment is python2.7.11,pyinstaller 3.3.1. there are only these two py files manage_utils.py mainform.py.,pyinstaller -F mainform.py, , how did this happen? And the path of program execution seems to have chang...
Qtdesigner designs the interface, saves it as a UI file, converts it into a Python file through PyUIC, and imports the classes of this file into another python file, main.py. (in order to separate the UI, it is convenient to edit UI), . from mainUI impo...
class Ux(QMainWindow, window.Ui_MainWindow): @pyqtSlot() def do_stop_search(self): pass @pyqtSlot(dict) def do_append_result(self, item): pass def on_btn_search_clicked(self): self.search = SearchThread(s...
want to use python to open a web page, log in to the system, extract cookie and other operations, because that system is very painful, so the implementation of bag-grabbing simulation has been given up. now we have realized the function of extracting ...
look up some methods about the use of QMessageBox.information on the Internet, but basically all of them are about C CPP, there is little information about PyQt5, and format and tr (). Arg () are not easy to use. how to output variables through QMessag...
questions are as follows: how to enforce the use of H5 player? what if the full screen button is invalid? Test Code: import sys from PyQt5 import QtWidgets, QtGui, QtCore from PyQt5.QtWebEngineWidgets import * def _fullScreenRequested( request...
read serial port data and display it to textbrower in real time, but thread will block. Ask for advice -sharp -*- coding: utf-8 -*- -sharp Form implementation generated from reading ui file 22.ui -sharp -sharp Created by: PyQt5 UI code generator...
which of the following two lines of commands are installed? Do you need to install both of these in the Qt environment, or just one of them? Qt novice, recently watching the installation of the Qt environment, a little confused: pip3 install PyQt5 ...
after I install PyQt5, I can directly call Qt s control to write GUI. I just want to make sure. ...
my environment is windows. With py2.7, installed, I installed the virtual environment of py3.6 with virtualenv. The installation of PyQt5, in this virtual environment was successful, but many of the related modules could not be found. Run the code (or i...
stackoverflow found the processing of logging but copying the original code will prompt QObject::connect: Cannot queue arguments of type QTextBlock (Make sure QTextBlock is registered using qRegisterMetaType().) QObject::connect: Cannot que...
I wrote a crawler when I was learning python. That is, to capture the title, introduction, price, and buyer s comments of some goods. Today, I want to learn from pyqt5, so I want to add a gui to the reptile directly. after running, the main form is ...
such as QPixmap( . res shadow left_top.png ) is used to make the upper left corner of the window shadow, but this requires 8 pictures, can you use different parts of a picture? Similar to the nine palace grid cut chart Thank you ...
A simple program does not copy on the Internet, but it always crashes, and Sogou Input also miraculously crashes import sys from PyQt.QtWidgets import QApplication, QWidget if name = _ _ main__ : app = QApplication(sys.argv) w=QWidget() w.show...
[problem description] to develop a graphical interface using pyqt5, you need to display videos and pictures in the same place in the window, that is, to display a picture after the video is played. My idea is to build a widget, the widgt as the VedioOu...
new QWebChannel(qt.webChannelTransport, function(channel) { { window.my_object = channel.objects.my_object; alert(my_object.test.myHello()); 1 } }); after the above code uses python to insert into the page (html introduces ...