[cairo] Cairo and FLTK?

[Bill Spitzak]

The correct xid is available in static variables, this should make it a 
lot easier. Inside a draw() method this should work in fltk1 for both 
single and double-buffered windows.

cairo_surface_t* surface =
   cairo_xlib_surface_create(fl_display, fl_window, fl_visual->visual,
	this->w(), this->h());

// you probably should destroy the surface when done drawing. If you
// keep it around you must track any resizes or any reason fltk decides
// to close the window. This is possible by overriding resize() and
// destroy().


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Bill Spitzak, Senior Software Engineer
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