Question

I get my mouse coordinates like this:

 winX = QCursor::pos().x();

These are coordinates for the whole screen. I need to get coordinates that are relative to my OpenGL widget window’s viewport, so I can use the gluUnProject function.

How can I do that?

Answer 1

You might want to have a look at QWidget’s mapFromGlobal(const QPoint & pos) method.

As per the documentation this:

translates the global screen coordinate pos to widget coordinates.