[vtkusers] Unable to see canvas of VTKRender window on a GUI designed using PyQt4

[Manjunath K E]

Hi

I have installed vtk, at, pyqt, python vtk using below commands.

sudo apt-get install libvtk5.8-qt4 libvtk5-qt4-dev libvtk5-dev
libvtk5.8 python-qt4 python-vtk qt4-designer pyqt4-dev-tools
 python-qt4-gl libqt4-opengl libqt4-assistant


I have a following program. The sample.py is generated from sample.ui
(which is desinged using qt4designer) using pyuic4 command.

=================sample.py===============

from PyQt4 import QtCore, QtGui
from vtk.qt4 import *
from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
from vtk import *

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    _fromUtf8 = lambda s: s

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(626, 320)
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.toolButton = QtGui.QToolButton(self.centralwidget)
        self.toolButton.setGeometry(QtCore.QRect(30, 10, 51, 25))
        self.toolButton.setObjectName(_fromUtf8("toolButton"))
        self.qvtkWidget = QVTKRenderWindowInteractor(self.centralwidget)
        self.qvtkWidget.setGeometry(QtCore.QRect(9, 60, 161, 181))
        self.qvtkWidget.setObjectName(_fromUtf8("qvtkWidget"))

        self.radioButton = QtGui.QRadioButton(self.centralwidget)
        self.radioButton.setGeometry(QtCore.QRect(280, 20, 116, 22))
        self.radioButton.setObjectName(_fromUtf8("radioButton"))
        self.toolButton_2 = QtGui.QToolButton(self.centralwidget)
        self.toolButton_2.setGeometry(QtCore.QRect(290, 80, 23, 25))
        self.toolButton_2.setObjectName(_fromUtf8("toolButton_2"))
        self.pushButton = QtGui.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(290, 150, 98, 27))
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.line = QtGui.QFrame(self.centralwidget)
        self.line.setGeometry(QtCore.QRect(300, 210, 281, 16))
        self.line.setFrameShape(QtGui.QFrame.HLine)
        self.line.setFrameShadow(QtGui.QFrame.Sunken)
        self.line.setObjectName(_fromUtf8("line"))
        self.line_2 = QtGui.QFrame(self.centralwidget)
        self.line_2.setGeometry(QtCore.QRect(393, 80, 20, 121))
        self.line_2.setFrameShape(QtGui.QFrame.VLine)
        self.line_2.setFrameShadow(QtGui.QFrame.Sunken)
        self.line_2.setObjectName(_fromUtf8("line_2"))
        self.horizontalLayoutWidget = QtGui.QWidget(self.centralwidget)
        self.horizontalLayoutWidget.setGeometry(QtCore.QRect(430, 50, 160,
80))

self.horizontalLayoutWidget.setObjectName(_fromUtf8("horizontalLayoutWidget"))
        self.horizontalLayout =
QtGui.QHBoxLayout(self.horizontalLayoutWidget)
        self.horizontalLayout.setMargin(0)
        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 626, 25))
        self.menubar.setObjectName(_fromUtf8("menubar"))
        self.menuFile = QtGui.QMenu(self.menubar)
        self.menuFile.setObjectName(_fromUtf8("menuFile"))
        self.menuEdit = QtGui.QMenu(self.menubar)
        self.menuHelp.setObjectName(_fromUtf8("menuHelp"))
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        MainWindow.setStatusBar(self.statusbar)
        self.actionOpen = QtGui.QAction(MainWindow)
        self.actionOpen.setObjectName(_fromUtf8("actionOpen"))
        self.actionAbout_IncoisVis = QtGui.QAction(MainWindow)

self.actionAbout_IncoisVis.setObjectName(_fromUtf8("actionAbout_IncoisVis"))
        self.actionSave = QtGui.QAction(MainWindow)
        self.actionSave.setObjectName(_fromUtf8("actionSave"))
        self.actionSave_As = QtGui.QAction(MainWindow)
        self.actionSave_As.setObjectName(_fromUtf8("actionSave_As"))
        self.actionAnimate = QtGui.QAction(MainWindow)
        self.actionAnimate.setObjectName(_fromUtf8("actionAnimate"))
        self.menuFile.addAction(self.actionOpen)
        self.menuFile.addAction(self.actionSave)
        self.menuFile.addAction(self.actionSave_As)
        self.menuFile.addAction(self.actionAnimate)
        self.menuHelp.addAction(self.actionAbout_IncoisVis)
        self.menubar.addAction(self.menuFile.menuAction())
        self.menubar.addAction(self.menuEdit.menuAction())
        self.menubar.addAction(self.menuHelp.menuAction())

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)


    def retranslateUi(self, MainWindow):

MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow",
"MainWindow", None, QtGui.QApplication.UnicodeUTF8))
        self.toolButton.setText(QtGui.QApplication.translate("MainWindow",
"...", None, QtGui.QApplication.UnicodeUTF8))
        self.radioButton.setText(QtGui.QApplication.translate("MainWindow",
"RadioButton", None, QtGui.QApplication.UnicodeUTF8))

self.toolButton_2.setText(QtGui.QApplication.translate("MainWindow", "...",
None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton.setText(QtGui.QApplication.translate("MainWindow",
"PushButton", None, QtGui.QApplication.UnicodeUTF8))
        self.menuFile.setTitle(QtGui.QApplication.translate("MainWindow",
"File", None, QtGui.QApplication.UnicodeUTF8))
        self.menuEdit.setTitle(QtGui.QApplication.translate("MainWindow",
"Edit", None, QtGui.QApplication.UnicodeUTF8))
        self.menuHelp.setTitle(QtGui.QApplication.translate("MainWindow",
"Help", None, QtGui.QApplication.UnicodeUTF8))
        self.actionOpen.setText(QtGui.QApplication.translate("MainWindow",
"Open", None, QtGui.QApplication.UnicodeUTF8))

self.actionAbout_IncoisVis.setText(QtGui.QApplication.translate("MainWindow",
"About IncoisVis", None, QtGui.QApplication.UnicodeUTF8))
        self.actionSave.setText(QtGui.QApplication.translate("MainWindow",
"Save", None, QtGui.QApplication.UnicodeUTF8))

self.actionSave_As.setText(QtGui.QApplication.translate("MainWindow", "Save
As", None, QtGui.QApplication.UnicodeUTF8))

self.actionAnimate.setText(QtGui.QApplication.translate("MainWindow",
"Animate", None, QtGui.QApplication.UnicodeUTF8))
==================================================

================prog.py======================

import sys
from PyQt4 import *
import os
import platform
import stat
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *


import sample

class MainWindow(QMainWindow, sample.Ui_MainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.setupUi(self)

if __name__ == '__main__':

    app = QApplication(sys.argv)

    form = MainWindow()
    form.show()

    sys.exit(app.exec_())
==============================================

To Run :

*python ./prog.py *

I get the output gui, but in that GUI the canvas related to VTK render
Window is not appearing. Could you please any1 help me.


 Thanks and Regards,

 Manjunath K E
 Help Ever Hurt Never
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