Type Alias PFN_PRINTING_XCVOPENPORT2 

pub type PFN_PRINTING_XCVOPENPORT2 = Option<unsafe extern "system" fn(param0: HANDLE, param1: PCWSTR, param2: u32, param3: *mut HANDLE) -> BOOL>;

Aliased Type

pub enum PFN_PRINTING_XCVOPENPORT2 {
    None,
    Some(unsafe extern "system" fn(HANDLE, PCWSTR, u32, *mut HANDLE) -> BOOL),
}

Variants

None

No value.

Some(unsafe extern "system" fn(HANDLE, PCWSTR, u32, *mut HANDLE) -> BOOL)

Some value of type T.