I was trying to get an example working with a QThread.
I wound up creating one but after running it for a while and pressing
buttons I got the error...
QPainter::end: Painter ended with 2 saved states
Am I doing something wrong?
I wanted an example where a worker thread would query a database or
some other long running operation and leave the GUI responsive
(although disabling certain elements like the button it was launched
from).
This is the code I was running....
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class Blah(QThread):
def __init__(self, parent=None):
super(Blah, self).__init__(parent)
print 'new thread created'
def run(self):
print 'running'
self.parent().setEnabled(False)
import time
for i in xrange(10):
self.parent().setText("%02d" % i)
time.sleep(.1)
self.parent().setText("Push Me")
self.parent().setEnabled(True)
def say_hi():
print 'HELLO'
class MyDialog(QDialog):
def __init__(self, *args, **kwargs):
super(MyDialog, self).__init__(*args, **kwargs)
self.setWindowTitle("Hey, hows it going?")
layout = QHBoxLayout()
self.buttons = []
for i in xrange(5):
button = QPushButton("Push Me")
self.buttons.append(button)
blah = Blah(button)
self.connect(button, SIGNAL("pressed()"), blah.start)
layout.addWidget(button)
self.setLayout(layout)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv[1:])
md = MyDialog()
md.show()
sys.exit(app.exec_())
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