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import sys
try:
import vtk
except:
print "Cannot import vtk"
sys.exit(1)
try:
print dir(vtk)
except:
print "Cannot print dir(vtk)"
sys.exit(1)
try:
try:
try:
o = vtk.vtkLineWidget()
print "Using Hybrid"
except:
o = vtk.vtkActor()
print "Using Rendering"
except:
o = vtk.vtkObject()
print "Using Common"
except:
print "Cannot create vtkObject"
sys.exit(1)
try:
print o
print "Reference count: %d" % o.GetReferenceCount()
print "Class name: %s" % o.GetClassName()
except:
print "Cannot print object"
sys.exit(1)
try:
b = vtk.vtkObject()
d = b.SafeDownCast(o)
print b, d
except:
print "Cannot downcast"
sys.exit(1)
sys.exit(0)
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