I (as well as many others) code cross-platform GUIs in Tk - a rock solid C lib, available on Windows (down to CE), Linux, Mac, as well as many other Unix flavors. Source is wide open, and under the most free BSD-style license. Highly recommended.
If you can live with a non-giant executable too, maybe a Starpack could interest you: a complete Tcl/Tk runtime system, plus your own app, all in one executable file, starting from under 1 MB. Zero installation. See http://www.equi4.com/starkit/
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I (as well as many others) code cross-platform GUIs in Tk - a rock solid C lib, available on Windows (down to CE), Linux, Mac, as well as many other Unix flavors. Source is wide open, and under the most free BSD-style license. Highly recommended.
If you can live with a non-giant executable too, maybe a Starpack could interest you: a complete Tcl/Tk runtime system, plus your own app, all in one executable file, starting from under 1 MB. Zero installation.
See http://www.equi4.com/starkit/