Merge topic 'qt4-qvtkwidget2-test-missing-link'

fcec93c7 TestQVTKWidget2: link QtOpenGL in Qt4
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Dan Lipsa <dan.lipsa@kitware.com>
Merge-request: !648

GUISupport/QtOpenGL/Testing/Cxx/CMakeLists.txt

@@ -7,6 +7,7 @@ if(VTK_QT_VERSION VERSION_GREATER "4")
 else ()
   find_package(Qt4 REQUIRED)
   set(QT_USE_QTGUI 1)
+  set(QT_USE_QTOPENGL 1)
   include(${QT_USE_FILE})
   qt4_wrap_cpp(moc_srcs QTestMainWindow.h)
 endif ()
@@ -15,4 +16,5 @@ vtk_test_cxx_executable(${vtk-module}CxxTests tests
   ${moc_srcs})
 target_link_libraries(${vtk-module}CxxTests LINK_PRIVATE
   ${QT_QTGUI_LIBRARY}
+  ${QT_QTOPENGL_LIBRARY}
   ${QT_QTWIDGETS_LIBRARY})