PAINTSTRUCT ps;
BeginPaint((HWND)org::xwt::plat::Win32$Win32Surface::hwnd, &ps);
Dirty(ps.rcPaint.left, ps.rcPaint.top, ps.rcPaint.right - ps.rcPaint.left, ps.rcPaint.bottom - ps.rcPaint.top);
PAINTSTRUCT ps;
BeginPaint((HWND)org::xwt::plat::Win32$Win32Surface::hwnd, &ps);
Dirty(ps.rcPaint.left, ps.rcPaint.top, ps.rcPaint.right - ps.rcPaint.left, ps.rcPaint.bottom - ps.rcPaint.top);