using cairo with gtkd

[llee]

A number of functions in Cairo return objects with the following naming conventions, according to the documention on: http://devel.akbkhome.com/gtkd_docs/src/cairoLib:

cairo_<object name>_t

When I try to create instances of these objects, I get an error. For example, when I try to instantiate the following:

cairo_text_extents_t* textExtents

The compiler says that cairo_text_extents_t is undefined. I tried importing the following modules:

cairoLib.Cairo, and cairoLib.Types.

Neither of these resolved the problem. If anyone can tell me how I can use the following functions I'd appreciate it. 

void textExtents (char[] utf8, cairo_text_extents_t * extents);
void selectFontFace (char[] family, cairo_font_slant_t slant, cairo_font_weight_t weight);

Thanks in advance.