Function windows_sys::Win32::UI::Controls::GetThemeBackgroundRegion

pub unsafe extern "system" fn GetThemeBackgroundRegion(
    htheme: HTHEME,
    hdc: HDC,
    ipartid: i32,
    istateid: i32,
    prect: *const RECT,
    pregion: *mut HRGN,
) -> HRESULT