c_gtk_cell_area_get_cell_allocation

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, GtkCellRenderer* renderer, GdkRectangle* cellArea, GdkRectangle* allocation) c_gtk_cell_area_get_cell_allocation;

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