Returns current font picker button mode (or what to show). Possible
values include GNOME_FONT_PICKER_MODE_PIXMAP,
GNOME_FONT_PICKER_MODE_FONT_INFO, and
GNOME_FONT_PICKER_MODE_USER_WIDGET.
gfp :
Pointer to GNOME font picker widget.
Returns :
Button mode currently set in font picker widget, or
GNOME_FONT_PICKER_MODE_UNKNOWN on error.
If use_font_in_label is TRUE, font name will be written using font chosen
by user and using size passed to this function. This only applies if
current button mode is GNOME_FONT_PICKER_MODE_FONT_INFO.
gfp :
Pointer to GNOME font picker widget.
use_font_in_label :
If TRUE, font name will be written using font chosen.
If show_size is TRUE, font size will be displayed along with font chosen
by user. This only applies if current button mode is
GNOME_FONT_PICKER_MODE_FONT_INFO.