[−][src]Function fltk::app::set_raw_callback
pub unsafe fn set_raw_callback<W>(
widget: &mut W,
data: *mut c_void,
cb: Option<fn(_: WidgetPtr, _: *mut c_void)>
) where
W: WidgetExt,
Set a widget callback using a C style API, when boxing is not desired
Safety
The function involves dereferencing externally provided raw pointers