title: Combining Qt 5.4.1 with vtk 6.2.0 (using CMake GUI 3.2.1) on Windows
body: <p>I know almost nothing about CMake. What I'm trying to do is to use VTK with Qt. Unfortunately, I'm stuck at the CMake part. For some reason, when I press "configure", I get the following error:</p>
  
  <pre><code>CMake Error at GUISupport/Qt/CMakeLists.txt:58 (find_package):
    By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project
    has asked CMake to find a package configuration file provided by
    "Qt5Widgets", but CMake did not find one.
  
    Could not find a package configuration file provided by "Qt5Widgets" with
    any of the following names:
  
      Qt5WidgetsConfig.cmake
      qt5widgets-config.cmake
  
    Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set
    "Qt5Widgets_DIR" to a directory containing one of the above files.  If
    "Qt5Widgets" provides a separate development package or SDK, be sure it has
    been installed.
  </code></pre>
  
  <hr>
  
  <p>What I've done :</p>
  
  <ol>
  <li><p>Install Qt 5.4.1 for Windows 64-bit (VS 2013, 722 MB)</p>
  
  <p>Install vtk 6.2.0</p>
  
  <p>Install CMake 3.2.1</p></li>
  <li><p>Extract vtk, and using the CMake GUI, set up the source code path and binary build.</p></li>
  <li><p>Set up several environment variables:</p>
  
  <pre><code>CMAKE_PREFIX_PATH = E:\Qt\Qt5.4.1\5.4\msvc2013_64
  QTDIR = E:\Qt\Qt5.4.1
  Path = E:\Program Files (x86)\CMake\bin;E:\vtk\bin\bin\Debug;E:\Qt\Qt5.4.1\5.4\msvc2013_64\bin
  </code></pre></li>
  <li><p>In CMake GUI, check the following options : </p>
  
  <p><code>VTK_Group_Qt</code> = true</p>
  
  <p><code>BUILD_SHARED_LIBS</code> = true</p>
  
  <p><code>VTK_QT_VERSION</code> = 5</p>
  
  <p><code>QT_QMAKE_EXECUTABLE</code> = E:/Qt/Qt5.4.1/5.4/msvc2013_64/bin/qmake.exe</p></li>
  <li><p>Press configure.</p></li>
  <li><p>Get the above error.</p></li>
  </ol>
  
  <p>What should I do to not get any error?</p>
  
  <p>Thank you!</p>