c++ - How to modify context menu of internet explorer using IDocHostUIHandler::ShowContextMenu? -

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i trying implement custom menu internet explorer 7.0. have use idochostuihandler::showcontextmenu only. till able implement basic context menu 2 options. problem disabled default. sample code same is:

hresult cwebeventhandler::showcontextmenu(dword dwid,point *ppt, iunknown *pcmdtarget, idispatch *pdispobject)  {     if (false) // put guard code here. of not consider         return s_false;      // show standard context menus.     else     {         iolewindow* pwnd = null;         hresult hr = pcmdtarget->queryinterface(iid_iolewindow,             (void**) &pwnd);          if (succeeded(hr))         {             hwnd hwnd;              if (succeeded(pwnd->getwindow(&hwnd)))             {                 hmenu menu = ::createpopupmenu();                 ::appendmenu(menu, mf_string, id_hello, l"&hello" ); // id_hello & id_world 2 menu resource items                 ::appendmenu(menu, mf_string, id_world, l"&world" );                  long myretval = ::trackpopupmenu(menu,                      tpm_rightbutton | tpm_leftalign | tpm_returncmd,                      ppt->x, ppt->y, null, hwnd, null);                  // send command browser.                 //                 lresult myresult = ::sendmessage(hwnd, wm_command,                     myretval, null);             }              pwnd->release();         }     }     return s_ok;  }

kindly suggest wrong code & why menu entries disabled??

thanks

edit

the same post available on link ( http://social.msdn.microsoft.com/forums/en/ieextensiondevelopment/thread/13584f76-21bd-4764-b5b7-e81932561574 )

i think have solved problem. after getting hwnd object in if (succeeded(pwnd->getwindow(&hwnd))) install own callback context menu. in callback 

if ((umsg == wm_initmenupopup) && (wparam == (wparam) menu)) {         return 0;            }

otherwise let original handler process it.

once done 

long myretval = ::trackpopupmenu(g_hpubmenu,tpm_rightbutton | tpm_leftalign | tpm_returncmd,                      ppt->x, ppt->y, null, hwnd, null);

revert original proc handler....

sample

wndproc g_lpprevwndproc = null;  hresult cwebeventhandler::showcontextmenu(dword dwid, point *ppt, iunknown *pcmdtarget, idispatch *pdispobject)      {   if (false)         return s_false;      // show standard context menus.     else     {         iolewindow* pwnd = null;         hresult hr = pcmdtarget->queryinterface(iid_iolewindow,             (void**) &pwnd);          if (succeeded(hr))         {             hwnd hwnd;              if (succeeded(pwnd->getwindow(&hwnd)))             {                 g_lpprevwndproc = (wndproc)setwindowlong(hwnd, gwl_wndproc, (long)ctxmenuwndproc);                  if (g_hpubmenu)                 {                     destroymenu(g_hpubmenu);                     g_hpubmenu = null;                 }                 g_hpubmenu = ::createpopupmenu();                  ::appendmenu(g_hpubmenu, mf_string|mf_enabled   , id_hello, l"&hello" );                 ::appendmenu(g_hpubmenu, mf_string|mf_enabled   , id_world, l"&world" );                  long myretval = ::trackpopupmenu(g_hpubmenu,                      tpm_rightbutton | tpm_leftalign | tpm_returncmd,                      ppt->x, ppt->y, null, hwnd, null);                  setwindowlong(hwnd, gwl_wndproc, (long)g_lpprevwndproc);                  // send command browser.                 //                  if (myretval == id_hello)                 {                     box(_t("hello"));                 }else if(myretval == id_world)                 {                     box(_t("world"));                 }else{                         lresult myresult = ::sendmessage(hwnd, wm_command,myretval, null);                 }              }              pwnd->release();         }     }     return s_ok;  }   lresult callback ctxmenuwndproc(hwnd hwnd, uint umsg, wparam wparam, lparam lparam) {     if ((umsg == wm_initmenupopup) && (wparam == (wparam) g_hpubmenu)) {         return 0;            }     return callwindowproc(g_lpprevwndproc, hwnd, umsg, wparam, lparam); }

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