title: OpenCV Error: Unspecified Error(The Function is not implemented)
body: <p>OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script) in cvShowImage, file /io/opencv/modules/highgui/src/window.cpp, line 545
  Traceback (most recent call last):
    File "", line 1, in 
  cv2.error: /io/opencv/modules/highgui/src/window.cpp:545: error: (-2) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function cvShowImage</p>
  
  <p><strong>How to solve this? It seems error in openCV 3.2.0 .</strong> Now even in 3.1.0 is showing same error. Anyone please help.</p>