pub unsafe extern "C" fn Fl_Value_Output_handle(
self_: *mut Fl_Value_Output,
cb: custom_handler_callback,
data: *mut c_void,
)
pub unsafe extern "C" fn Fl_Value_Output_handle(
self_: *mut Fl_Value_Output,
cb: custom_handler_callback,
data: *mut c_void,
)