gtkmm win32 runtime error

[fbacque free fr]

I'm trying to port a linux soft to windows 98, it compiles fine, but when I
start it I get:
_get_global_font_dc: Parametre incorrect.
_win32_scaled_font_get_hfont: Cette fonction n'est valide qu'en mode Win32.

<Topfetch.exe:4294805611>: Pango-CRITICAL **: _pango_engine_shape_shape:
assertion `PANGO_IS_FONT (font)' failed

and a dialog with:
Pango-ERROR **: file ../../../pango/pango.shape.c: line 75 (pango_shape):
assertion failed: (glyphs->num_glyphs > 0)
aborting...

Any idea?

Thanks

Francis