Type Definition windows_sys::Win32::UI::Shell::LPFNVIEWCALLBACK

pub type LPFNVIEWCALLBACK = Option<unsafe extern "system" fn(psvouter: IShellView, psf: IShellFolder, hwndmain: HWND, umsg: u32, wparam: WPARAM, lparam: LPARAM) -> HRESULT>;

Required features: "Win32_UI_Shell", "Win32_Foundation", "Win32_System_Ole"