FLTK is a C++ graphical user interface tookit for X(Unix), OpenGL and Microsoft
Windows(Nt 4.0, 95, 98).
We won't cover much about FLTK in here because code examples are included in
the skeleton code. But it is good to learn the basics of FLTK so that you can
improve your UI later on if you choose to do so. You can click
#include <FL/Fl.h>
#include <FL/Fl_Window.H>
#include <FL/Fl_Box.h>
int main(int argc, char *argv) {
FL_Window *window = new Fl_Window(300, 180);
FL_Box *box = new Fl_Box(20, 40, 260, 100, "Hello World!");
box->(FL_UP_BOX);
box->labelsize(36);
box->labelfont(FL_BOLD);
box->labeltype(FL_SHADOW_LABEL);
window->end();
window->show(argc, argv);
return Fl::run()
}
The statement "FL_Window *window = ..." will create a window with
the specified size(36). The next statement will create a box with the "Hello
World!" string in it. To format the box and string, we can use "labelfont",
"labeltype", etc.
