PyQt and maya 2010. Viewport refuses to update

Coding
1

Hi! I try to write something on QT and here is the trouble.
My window is appear, work correctly, but viewport refuses to update by itself while the window is exists. When I select some mesh or something else it is not shown up highlighted until I tumble or zoom with my viewport camera. And the same happens if I try to change active tool by pressing Q,W,E or R-key.
Here is the code:

import sys
import PyQt4.Qt as qt
import maya.cmds as cmds
from hairSetup import *
import maya.mel as mel
from test4 import Ui_dialog
import pumpThread as pt

class MainForm(qt.QDialog, Ui_dialog):
 

	def __init__(self):
		super(MainForm, self).__init__()
		self.setupUi( self )
 
		self.connect(self.addHairButton, qt.SIGNAL("clicked()"), self.addHair)
		self.connect(self.transferHairButton, qt.SIGNAL("clicked()"),self.transferHair)
		self.connect(self.addGuideButton, qt.SIGNAL("clicked()"),self.addGuide)
		self.connect(self.duplicateGuideButton, qt.SIGNAL("clicked()"),self.duplicateGuide)
		self.connect(self.mirrorGuidesButton, qt.SIGNAL("clicked()"),self.mirrorGuides)
		self.connect(self.addPartingButton, qt.SIGNAL("clicked()"),self.addPartingToMesh)
		self.connect(self.removeGuidesButton, qt.SIGNAL("clicked()"),self.removeGuidesFromMesh)
		self.connect(self.removeHairButton, qt.SIGNAL("clicked()"),self.removeHair)
		self.connect(self.refreshButton, qt.SIGNAL("clicked()"),self.addGeotoList)
		self.connect(self.clearButton, qt.SIGNAL("clicked()"),self.clear)
		self.connect(self.listWidget, qt.SIGNAL("itemDoubleClicked(QListWidgetItem *)"), self.selectGeoItems)
		self.addGeotoList()

	def addHair(self):
		addHairSystemToSeleced(0)
	
	def transferHair(self):
		copyHairSystemFromSelected(0)
	
	def addGuide(self):
		addGuideToSelected(0)
	
	def duplicateGuide(self):
		copySelectedGuide(0)
	
	def mirrorGuides(self):
		copyMirrorSelectedGuides(0)
	
	def addPartingToMesh(self):
		addParting(0)
	
	def removeGuidesFromMesh(self):
		removeGuides(0)
	
	def removeHair(self):
		deleteHairSystem(0)
	
	def addGeotoList(self):
		self.clear()
		hairGeoList = cmds.ls(type='hairGeoShader')
		for i in hairGeoList:
			self.listWidget.addItem(i)
	
	def clear(self):
		self.listWidget.clear()
	
	def selectGeoItems(self):
		items = self.listWidget.selectedItems()
		geoList = []
		for i in items:
			geoList.append(i.text())
		cmds.select(geoList)
		mel.eval('ShowAttributeEditorOrChannelBox;')

pt.initializePumpThread()
form = MainForm()
form.show()
app.exec_()

Could someone help me?

2

the app.exec_ line does not need to be in there if you’re within Maya

the fact that there’s no update means there’s a problem with your PyQt window instantiation and whether its modal or not, google examples on ways to instantiate a PyQt class inside Maya, it will be different than outside Maya