# -*- coding: utf-8 -*-
from PySide import QtGui

class Check(QtGui.QWidget):
    
    def __init__(self):
        super(Check, self).__init__()
        
        self.initUI()
        
    def initUI(self):      

        self.lbl = QtGui.QLabel("Ubuntu", self)
        combo = QtGui.QComboBox(self)
        combo.addItem("Ubuntu")
        combo.addItem("Mandriva")
        combo.addItem("Fedora")
        combo.addItem("Red Hat")
        combo.addItem("Gentoo")

        combo.move(50, 50)
        self.lbl.move(50, 150)

        combo.activated[str].connect(self.onActivated)        
         
        self.setGeometry(0, 0, 150, 180)
        self.show()
        
    def onActivated(self, text):
        if text == 'Gentoo':
            if hasattr (self, 'lbl'): #if 'lbl' in self:
                self.lbl.hide()
                del self.lbl
        else:
            if not hasattr (self, 'lbl'):
                self.lbl = QtGui.QLabel(text, self)
                self.lbl.move(50, 150)
                self.lbl.show()
            self.lbl.setText(text)
            self.lbl.adjustSize()

class MainFrame (QtGui.QScrollArea):
    def __init__(self, parent):
        QtGui.QScrollArea.__init__(self)
        # верхнее правое
        check2 = Check()
        self.setWidget(check2)
#        self.resize(700,900)