The render vfunc takes a GdkDrawable* instead of a GdkWindow*, because

The render vfunc takes a GdkDrawable* instead of a GdkWindow*, because

2003-09-30  Murray Cumming  <murrayc@usa.net>

        * gtk/gtkcellrenderer.h: The render vfunc takes a GdkDrawable*
        instead of a GdkWindow*, because that what it is given. The
        documentation was already correct. This should cause no API/ABI
        breakage with C compilers.
        * gtk/gtkcellrenderertext.c, gtkcellrendererpixbuf.c,
        gtkcellrenderertogger.c: Updated the declarations of the render vfunc
        implementation accordingly.