Lazarus is crazy good, as is Delphi, if you can afford it. wxWidgets is also nice, without the licensing weirdness that is Qt.

Lazarus is probably the easiest way to make a lean and fast native Windows app without paying for tooling.

wxWidgets is just a wrapper around existing UI libraries; win32 on Windows, and Gtk/Qt on *nix.

	▲	lpcvoid 3 hours ago \| parent [-]
		Yes, as is the VCL that Delphi ships, along with the Lazarus component library which bases on Qt or GTK on Linux, and Win32 on Windows. It's the same sort of layer.