macOS X Window Question

[dataset]

Hello!
I am currently learning C++ and I want to start working with a GUI.
I'm leaning towards using the X Window System and I was wondering where should i get started?

Should I even be using the X Window System?
I'm looking at making cross system programs that will work on Mac, Linux, and probably windows.

And does anyone know where the GTKmm package for mac is?

EDIT : Changed XWindows to X Window

 

[aristobrat]

 

[John Jacob]

If you want to program in C++, then you have two obvious options.
1. The QT toolkit (from Norwegian company Trolltech). The K Desktop Environment (KDE) uses this.
2. GTK++ (a C++ wrapper for GTK). Used by the GNU Object Model Environment (GNOME).

Both are available as open-source, so you should be able to build them for Mac OS X as well (if Mac OS X binaries are not already available).

 

[scoobe]

widgets

Take a look at wxWidgets for some cross platform libs: http://www.wxwidgets.org