cairo:scaled-font-ctm (font ctm)

font -- a cairo:scaled-font-t instance
ctm -- a cairo:matrix-t instance for the return value for the CTM

The cairo:matrix-t instance for the CTM.

Stores the CTM with which font was created into ctm. Note that the translation offsets (x0,y0) of the CTM are ignored by the cairo:scaled-font-create function. So, the matrix this function returns always has (0,0) as (x0,y0).