c++ - How to implement Find-on-Page command in MFC web browser control with pre-filled search word? -


i'm using mfc web browser control in dialog-based mfc project display html content , trying make show "find on page" dialog window search word pre-selected in it. (what you'd if hit ctrl+f in ie web browser.)

if following find dialog shown ok, doesn't seem support way pre-fill search word:

iwebbrowser2* pwebbrowser = null; lpunknown unknown = m_browser.getcontrolunknown();  unknown->queryinterface(iid_iwebbrowser2,(void **)&pwebbrowser);  if(pwebbrowser) {     hresult hr;     ccomvariant varnull;     if(succeeded(hr = pwebbrowser->execwb(olecmdid_find, olecmdexecopt_promptuser, &varnull, &varnull)))     {         //success!     }      pwebbrowser->release(); }  if(unknown) {     unknown->release(); }

i found this msdn page, says:

olecmdid_showfind tells receiver show find dialog box. takes vt_dispatch input param.

so evidently there's find command olecmdid_showfind id, can't seem make work. don't understand vt_dispatch input param either? when try -- total shot in dark due lack of documentation:

ccomvariant var1 = l"pre-filled search word 1", var2 = l"pre-filled search word 2"; hr = pwebbrowser->execwb(olecmdid_showfind, olecmdexecopt_dodefault, &var1, &var2);

but hr=0x80040100 or "trying revoke drop target has not been registered"

any idea how make work?


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