Hello,

I have a game which I originally wrote in DevCpp and Opengl2.0, but now I switched to Visual Studio (2010) and Opengl3.0, cause it allows a lot of things that are mandatory for making the game cool. I had to take VS cause there doesnt exist Devpack for anything else than OpenGl2. So I have run an OpenGl sample in VS2010, and everything is good. But when I loaded my game, it started to throw me a lot of errors, which DevCpp didnt throw, and instead it normally compiled. It is mainly error C2864: "only static const integral data members can be initialized within a class", but there are even some others. I know that I could fix it manually in program, but the rework would be brutal and time-consuming cause the project is BIG. I dont wanna do that. I just want the VS2010 compiler to behave like DevC++ one and normally do its job and compile it for me. I tried some additional command line options like /std=c++11 but it said it doesnt know them. I tried /O1 cause I read somewhere it helps (didnt). It would be really cool if there existed a solution cause I really dont want to manually recheck 70k+ lines (and make additional mistakes during it).

Please help

I concur; fixing the warnings is the only course of action.  And even more so, you are upgrading from OpenGL 2.0 to 3.0.

Because this is such a large undertaking, I recommend upgrading your project and continuing development in parallel branches.  Use Visual Studio to fix warnings on one branch, and use Dev-C++ on the other branch.  Upgrade and refactor in small sprints on the upgrade branch and continue developing your game on the other.

Once the project has been fully upgraded, you can take everything you’ve learned from upgrading and migrate your changes on the other branch into your upgraded branch.  (Hopefully you are using some form of version control with those 70k+ lines!)

Good luck!

Ideally you should use the most recent version of Visual Studio.  If for some reason you cannot, you should at least upgrade to a Visual Studio version that implements the C++ features you are using (see https://msdn.microsoft.com/en-us/library/hh567368.aspx).  If for some reason you are stuck with VS 2010, you have to change all your code so it only uses the C++ features it supports.