pub unsafe extern "C" fn gtk_widget_class_install_style_property_parser(
klass: *mut GtkWidgetClass,
pspec: *mut GParamSpec,
parser: GtkRcPropertyParser
)pub unsafe extern "C" fn gtk_widget_class_install_style_property_parser(
klass: *mut GtkWidgetClass,
pspec: *mut GParamSpec,
parser: GtkRcPropertyParser
)