• OpenCV version: 2.4 / 3
• Host OS: Windows 7/10

have opencv various versions with Qt 4.x or 5.x build with visual sutdio 2010
when i run my exe, with simple opencv loading an image , waitkey and release , Qt seems to keep open the cmd window if i close the opecv window. ( it only closes the cmd window if i press button to realease and destroy window from code). this cmd also has output ''init done''.

without QT build, the cmd closes automatically when i close the opencv window, as expected.
moreover the exe, when i have the QT builded opencv, seems to have a memory leak and doesnt let me delete it.