pub unsafe extern "C" fn gtk_color_dialog_choose_rgba(
self_: *mut GtkColorDialog,
parent: *mut GtkWindow,
initial_color: *const GdkRGBA,
cancellable: *mut GCancellable,
callback: GAsyncReadyCallback,
user_data: gpointer,
)
Available on crate feature
v4_10
only.