Type Alias PFTASKDIALOGCALLBACK 

pub type PFTASKDIALOGCALLBACK = Option<unsafe extern "system" fn(hwnd: HWND, msg: u32, wparam: WPARAM, lparam: LPARAM, lprefdata: isize) -> HRESULT>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.