Type Alias ButtonCallback 

pub type ButtonCallback = Option<unsafe extern "C" fn(result: GuiButtonType, type_: InputType, context: *mut c_void)>;

Aliased Type

pub enum ButtonCallback {
    None,
    Some(unsafe extern "C" fn(GuiButtonType, InputType, *mut c_void)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(GuiButtonType, InputType, *mut c_void))

Some value of type T.