Qt: How to integrate / embed Qt application in other framework like OpenGL for example?

Hello all I开发者_高级运维'm using Qt for desktop application but never needed to take portion of Qt in my case QWebkit and some widgets and use Them from other application like opengl application . For example simple flow . A button in the OpenGL application opens Qt Widget ,then the user fill some details and return the focus back to the OpenGL application How can it be done ?