C based GUI cross platform toolkits

[John]

Is Gtk the only C GUI toolkit that is cross platform? Both Qt and wxWigets seem to be C++ solutions.

The problem with Gtk is it's primarily a Linux solution with poor implementations on Windows and OS X.

I need a good cross platform GUI that plays well with ANSI/ISO C.
 

[John]

I'm wondering if I should use the native GUI API and wrap it with a common high level Basic function set.

win = Window("Ttile",400,225)

This would be the same syntax for all platforms.

This could be taken a step further and used within CGI scripts. (function creates a <DIV> and uses absolute positioning for control placement.)