Type Alias PFN_DrvQuerySpoolType 

pub type PFN_DrvQuerySpoolType = Option<unsafe extern "system" fn(dhpdev: DHPDEV, pwchtype: PCWSTR) -> BOOL>;

Aliased Type

pub enum PFN_DrvQuerySpoolType {
    None,
    Some(unsafe extern "system" fn(DHPDEV, PCWSTR) -> BOOL),
}

Variants

None

No value.

Some(unsafe extern "system" fn(DHPDEV, PCWSTR) -> BOOL)

Some value of type T.