Function winapi::um::uxtheme::GetThemeMetric

pub unsafe extern "system" fn GetThemeMetric(
    hTheme: HTHEME, 
    hdc: HDC, 
    iPartId: c_int, 
    iStateId: c_int, 
    iPropId: c_int, 
    piVal: *mut c_int
) -> HRESULT