Issue
So I just started working with PyQt5. Right now I only programmed 1 button that's supposed to take text from a line edit, store it in a global variable and put it in a text browser. Now it does this... but with issues. The text browser does NOT update until I click another program/window and then click my app again When the line edit is cleared there is a bug which is basically text not being cleared properly but only it's top half. This goes away when I type again.
I tried calling the .update() methods for the widgets and QApplication.process_events()
Here's the code
from PyQt5 import QtCore, QtGui, QtWidgets
lyrics = ''
adlib = ' (Placeholder adlib)'
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(742, 680)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.addLineBtn = QtWidgets.QPushButton(self.centralwidget)
self.addLineBtn.setGeometry(QtCore.QRect(530, 0, 91, 51))
font = QtGui.QFont()
font.setFamily("Arial")
font.setItalic(True)
self.addLineBtn.setFont(font)
self.addLineBtn.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.addLineBtn.setObjectName("addLineBtn")
self.deleteBtn = QtWidgets.QPushButton(self.centralwidget)
self.deleteBtn.setGeometry(QtCore.QRect(120, 80, 91, 32))
self.deleteBtn.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.deleteBtn.setObjectName("deleteBtn")
self.saveBtn = QtWidgets.QPushButton(self.centralwidget)
self.saveBtn.setGeometry(QtCore.QRect(30, 80, 91, 32))
self.saveBtn.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.saveBtn.setObjectName("saveBtn")
self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit.setGeometry(QtCore.QRect(30, 20, 501, 51))
self.lineEdit.setObjectName("lineEdit")
self.dialLabel = QtWidgets.QLabel(self.centralwidget)
self.dialLabel.setGeometry(QtCore.QRect(640, 20, 71, 16))
self.dialLabel.setObjectName("dialLabel")
self.rtdSlider = QtWidgets.QSlider(self.centralwidget)
self.rtdSlider.setGeometry(QtCore.QRect(620, 40, 101, 22))
self.rtdSlider.setOrientation(QtCore.Qt.Horizontal)
self.rtdSlider.setObjectName("rtdSlider")
self.textBrowser = QtWidgets.QTextBrowser(self.centralwidget)
self.textBrowser.setGeometry(QtCore.QRect(20, 120, 701, 501))
self.textBrowser.setObjectName("textBrowser")
self.noadlibBtn = QtWidgets.QPushButton(self.centralwidget)
self.noadlibBtn.setGeometry(QtCore.QRect(530, 50, 91, 51))
font = QtGui.QFont()
font.setFamily("Arial")
font.setItalic(True)
self.noadlibBtn.setFont(font)
self.noadlibBtn.setCursor(QtGui.QCursor(QtCore.Qt.PointingHandCursor))
self.noadlibBtn.setObjectName("noadlibBtn")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 742, 22))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
self.addLineBtn.clicked.connect(self.addLineAdlib)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.addLineBtn.setText(_translate("MainWindow", "Adlib"))
self.deleteBtn.setText(_translate("MainWindow", "Delete"))
self.saveBtn.setText(_translate("MainWindow", "Save"))
self.dialLabel.setText(_translate("MainWindow", "RTD Level"))
self.noadlibBtn.setText(_translate("MainWindow", "No Adlib"))
def addLineAdlib(self):
global lyrics
lyrics += self.lineEdit.text() + adlib + '\n'
self.lineEdit.clear()
self.textBrowser.setText(lyrics)
def addLineNoAdlib(self):
pass
def save(self):
pass
def deleteLine(self):
pass
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
Solution
I found the same problem as yours and I use MacOS Mojave 10.14.6. This problem maybe due to OS, but I downgraded pyqt5 from the latest 5.14.1 to a stable version 5.9.2, the problem was solved.
Answered By - Coneain
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