Qt3.12 with MSVC2015

[Vipen]

Hi, I have quite old project build on Qt3.12 and compiled with vc++6 compiler.
Is there any challenge if, now i compile project source with MSVC 2015 compiler and keeping the Qt3.12. I am expecting the error due to the new c++ standards. But apart from that, any other compatibility issue. Does the QT3.12 is compatible with MSVC2015?

In short i need to port the whole project on QT5.x with MSCV2019. So i am planning it to doing in steps.

[jsulm]

@Vipen If you really used Qt3 then I suggest to port to Qt4 first.
Porting from Qt4 to Qt5 is not that hard then.