c_gtk_cell_area_get_preferred_width_for_height

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(GtkCellArea* area, GtkCellAreaContext* context, GtkWidget* widget, gint height, gint* minimumWidth, gint* naturalWidth) c_gtk_cell_area_get_preferred_width_for_height;

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