Function windows_sys::Win32::UI::WindowsAndMessaging::RealGetWindowClassW

pub unsafe extern "system" fn RealGetWindowClassW(
    hwnd: HWND, 
    ptszclassname: PWSTR, 
    cchclassnamemax: u32
) -> u32

Required features: "Win32_UI_WindowsAndMessaging", "Win32_Foundation"