Type Alias LPFNDFMCALLBACK 

pub type LPFNDFMCALLBACK = Option<unsafe extern "system" fn(psf: *mut c_void, hwnd: HWND, pdtobj: *mut c_void, umsg: u32, wparam: WPARAM, lparam: LPARAM) -> HRESULT>;

Aliased Type

pub enum LPFNDFMCALLBACK {
    None,
    Some(unsafe extern "system" fn(*mut c_void, *mut c_void, *mut c_void, u32, usize, isize) -> i32),
}

Variants

None

No value.

Some(unsafe extern "system" fn(*mut c_void, *mut c_void, *mut c_void, u32, usize, isize) -> i32)

Some value of type T.