Function winapi::um::fileapi::GetDiskFreeSpaceW

pub unsafe extern "system" fn GetDiskFreeSpaceW(
    lpRootPathName: LPCWSTR, 
    lpSectorsPerCluster: LPDWORD, 
    lpBytesPerSector: LPDWORD, 
    lpNumberOfFreeClusters: LPDWORD, 
    lpTotalNumberOfClusters: LPDWORD
) -> BOOL