深入浅出HOOKS（之陆）[2]

    int index;

    static hmenu hmenu;

    switch (umsg)

    {

        case wm_create:

            // save the menu handle.

            hmenu = getmenu(hwndmain);

            // initialize structures with hook data. the menu-item

            // identifiers are defined as 0 through 6 in the

            // header file. they can be used to identify array

            // elements both here and during the wm_command

            // message.

            myhookdata[idm_callwndproc].ntype = wh_callwndproc;

            myhookdata[idm_callwndproc].hkprc = callwndproc;

            myhookdata[idm_cbt].ntype = wh_cbt;

            myhookdata[idm_cbt].hkprc = cbtproc;

            myhookdata[idm_debug].ntype = wh_debug;