c_gtk_style_apply_default_background

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(GtkStyle* style, cairo_t* cr, GdkWindow* window, GtkStateType stateType, gint x, gint y, gint width, gint height) c_gtk_style_apply_default_background;

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