深入浅出HOOKS（之陆）[19]

    hdc = getdc(hwndmain);

    cch = wsprintf(szbuf,

        "msgfilter  ncode: %s, msg: %s, %d times    ",

        szcode, szmsg, c++);

    textout(hdc, 2, 135, szbuf, cch);

    releasedc(hwndmain, hdc);

    return callnexthookex(myhookdata[msgfilter].hhook, ncode,

        wparam, lparam);

}