GUI for C++

Qt. Yes it's compatible with Visual Studio, presuming you get the version that's compiled for it. (MSVC++ and MinGW use different name mangling schemes for C++, so C++ libraries have to be compiled for both).

>>58838323
Qt and wxWidgets are pretty common and will have plenty of docs and guides out there

Only reason you'd ever touch GTK on windows is because you're making a windows build of something you already have working with it on linux

standard winapi if you want something that doesn't look like a kindergartner finger paint project

>>58838323
Try FLTK also.

>>58838480
>standard winapi
yeah and calculate like 3 months in for learning the winapi

>>58838323
Qt duh.
Better tools.

Qt. Its the definitive qui toolkit on any desktop.

>>58838637
>qui
triggered

>>58838323

The GUI capabilities of ROOT are exquisitely well documented and easy to implement. This is in no way or form a sarcastic post to vent repressed anger and frustration with said software.