[PyQt] mouse pressed event with qt 4.5

[Thomas Espenhain]

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Hi Andreas,
thanks for your answer and sorry for the missing example .. here it  
comes:

import sys
from PyQt4 import QtCore, QtGui
app = QtGui.QApplication(sys.argv)

class Example(QtGui.QWidget):

     def __init__(self, parent=None):
	QtGui.QMainWindow.__init__(self, parent)

	self.firstPage = QtGui.QWidget()
	self.firstPage.setLayout(QtGui.QHBoxLayout())
	self.secondPage = QtGui.QWidget()
	self.secondPage.setLayout(QtGui.QHBoxLayout())

	btn1 = QtGui.QPushButton('btn1')
	self.connect(btn1, QtCore.SIGNAL('pressed()'), self.on_btn1_pressed)
	self.firstPage.layout().addWidget(btn1)

	btn2 = QtGui.QPushButton('btn2')
	self.connect(btn2, QtCore.SIGNAL('pressed()'), self.on_btn2_pressed)
	self.secondPage.layout().addWidget(btn2)

	self.stw = QtGui.QStackedWidget()
	self.stw.addWidget(self.firstPage)
	self.stw.addWidget(self.secondPage)

	self.setLayout(QtGui.QHBoxLayout())
	self.layout().addWidget(self.stw)

     def on_btn1_pressed(self):
	print 'btn1 pressed'
	self.stw.setCurrentWidget(self.secondPage)

     def on_btn2_pressed(self):
	print 'btn2 pressed'

if __name__ == '__main__':

     main = Example()
     main.show()

     sys.exit(app.exec_())

works with qt-4.4.3 and pyqt-4.4.4
with qt-4.5.0 and pyqt-4.4.4 the on_btn2_pressed method is called  
directly after btn1 pressed

Thomas

Am 17.03.2009 um 20:28 schrieb Andreas Pakulat:

> On 17.03.09 12:43:28, Thomas Espenhain wrote:
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>>
>> Hi,
>> I have a strange behavior with the mouse pressed event with pyqt4  
>> with
>> qt-4.5
>> Following situation:
>> - - a stacked widget with 2 pages
>> - - every page has a button placed at same position
>> - - button1 on page 1 makes page 2 active
>> - - button2 on page 2 makes something else
>> And here is the problem:
>> If I press button1, the second page gets active but also the button2
>> pressed-method is executing right now!
>> The buttons are inherited from qpushbutton. I overwrote the
>> mousePressedEvent to find out whether the method is also called on
>> button2 or not. In my suprise the methode is called one time only -  
>> from
>> button1!
>>
>> The same behavior if pressed-method of button A deletes itself and  
>> makes
>> another button visible at position of button A.
>>
>> With qt4.4 it works correct.
>> Pyqt is version 4.4.4 in both cases
>>
>> Can someone confirm the behavior?
>
> Where's the minimal executable example that reproduces this? A wild  
> guess I
> could make: The buttons are both childs of the stackwidget itself  
> and not
> the pages and are simply put at the right position via move() or  
> some such
> - instead of a layout. But of course thats just a guess without  
> seeing the
> actual code.
>
> Andreas
>
> -- 
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