Function windows_sys::Win32::UI::Controls::GetThemeFilename

pub unsafe extern "system" fn GetThemeFilename(
    htheme: HTHEME,
    ipartid: i32,
    istateid: i32,
    ipropid: i32,
    pszthemefilename: PWSTR,
    cchmaxbuffchars: i32,
) -> HRESULT