Type Alias windows_sys::Win32::UI::Shell::LPFNDFMCALLBACK

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

Required features: "Win32_Foundation", "Win32_System_Com"

Aliased Type

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

Variants

None

No value.

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

Some value of type T.