;; Create child window (for D2D content)

        ;;register window class

       .new wc:WNDCLASSEX

        mov wc.cbSize,        WNDCLASSEX
        mov wc.style,         CS_HREDRAW or CS_VREDRAW
        mov wc.lpfnWndProc,   &ChildWndProc
        mov wc.cbClsExtra,    0
        mov wc.cbWndExtra,    sizeof(LONG_PTR)
        mov wc.hInstance,     HINST_THISCOMPONENT
        mov wc.hIcon,         NULL
        mov wc.hIconSm,       NULL
        mov wc.hbrBackground, NULL
        mov wc.lpszMenuName,  NULL
        mov wc.hCursor,       LoadCursor(NULL, IDC_ARROW)
        mov wc.lpszClassName, &@CStr(L"D2DListViewApp")

        RegisterClassEx(&wc)

       .new d2dWindowSize:D2D1_SIZE_U

        this.CalculateD2DWindowSize(&d2dWindowSize)

        ;;create window

        .if CreateWindowEx(
                0,
                L"D2DListViewApp",
                L"",
                WS_CHILDWINDOW or WS_VISIBLE,
                0,
                0,
                d2dWindowSize.width,
                d2dWindowSize.height,
                [rsi].m_parentHwnd,
                NULL,
                HINST_THISCOMPONENT,
                this
                )

            mov [rsi].m_d2dHwnd,rax
            mov eax,S_OK
        .else
            mov eax,E_FAIL
        .endif
    .endif
    ret