Hi Julierme,
I think Your problem is, that You try to create a new application with
"app = QApplication(sys.argv)" inside a running QGis, which already is a
running Qt-application.
Simplified code should perform without crash:
import sys
from PyQt5.QtCore import (QSize,Qt)
from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton,
QMainWindow)
class MainWindow(QMainWindow):
def _init_(self):
super()._init_()
self.setWindowTitle("My App")
button = QPushButton("Press Me!")
self.setCentralWidget(button)
self.setFixedSize(QSize(400,300))
window = MainWindow()
window.show()
hth
Ludwig
Am 16.08.23 um 19:15 schrieb 1520 gis via QGIS-User:
Hi all,
I wrote the PyQt script below and I am running it through QGIS3. When
I run it for the first time after opening it in QGIS3, the
application's window pops up smoothly. However, when I close the
window and run the script, QGIS3 readily quits. That may be something
related to the event loop, but I'm unsure and don't know how to stop
the QGIS3 shutdown for the subsequent runs. Any hint on how to fix
this issue will be very appreciated.
import sys
from PyQt5.QtCore import (QSize,
Qt)
from PyQt5.QtWidgets import (QApplication,
QWidget,
QPushButton,
QMainWindow)
class MainWindow(QMainWindow):
def _init_(self):
super()._init_()
self.setWindowTitle("My App")
button = QPushButton("Press Me!")
self.setCentralWidget(button)
self.setFixedSize(QSize(400,300))
app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec()
--
##########################################
*Julierme G Pinheiro*
*SDI Expert & Geoprocessing Specialist*
Phone: +55 61 99994-3569
Website: GIS
<https://www.udemy.com/course/qgis-server-para-iniciantes-instalacao-e-configuracao/>
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