Im trying to embed a display from an alien application (python OCC) into (Py)Qt using the winId of the widget. But when i pass it to  OCC i get an overflow error.
Inspecting the winId qt returns its 4318283408 which is more than a 32bit number. Im running 64bits (osx) and both libraries are compiled for 64bit, but i have a hunch that OCC only likes 32bit numbers still. So my question is, is there any way to control the range of the winId that Qt return?
Thanks
Henrik
Looking in Qt's source code, in the file src/gui/kernel/qwindowdefs.h, you'll find that WId is typedef'd to long for 64-bits OSX (it's int for 32-bits OSX). A long on 64-bits OSX is 8 bytes long (or 64 bits), and therefore 4318283408 is a valid value.
If you want to force winId() to return a 32 bits value, you will need to link to a 32-bits version of the Qt's library.
Qt winId() forcing 32bit values