visual c++ - how to create tooltips with arabic text in mfc application -

i want create simple mfc application uses rtl property display tooltip given arabic text content edit box in application dialog. code looks this:

hwnd cmfcapplicationdlg::createtooltip(hwnd hwnd, lpctstr sztext){      hwndtt = createwindowex(null, tooltips_class, null,              ws_popup | tts_alwaystip | tts_balloon,              cw_usedefault, cw_usedefault, cw_usedefault, cw_usedefault,              m_hwnd,              null,              getmodulehandle(null),              null);      if(!hwndtt)     {         return null;     }      if (sztext == null)     {         ::destroywindow(hwndtt);         hwndtt = null;         return null;     }  // set tool information. in case, "tool" entire parent window      toolitem.cbsize = sizeof(toolitem);     toolitem.uflags = ttf_idishwnd | ttf_subclass | ttf_rtlreading;//setting rtl flag here     toolitem.hwnd = m_hwnd;     toolitem.hinst = getmodulehandle(null);     toolitem.lpsztext = (wchar_t *)sztext;     toolitem.uid = (uint_ptr)hwnd;      ::getclientrect(hwnd, &toolitem.rect);      // associate tooltip tool window         lresult result = ::sendmessage(hwndtt, ttm_addtool, 0, (lparam)&toolitem);     return hwndtt; } 

i'm calling function oninitdialog() method way:

createtooltip((hwnd)getdlgitem(idc_edit_dummy), l".استخدم 2 من المرات في اليوم"); 

here idc_edit_dummy id edit box trying attach tooltip with. reason, application doesn't display tooltip @ all. going wrong?

the mfc has it's own tooltip implementation. may easier use instead of using plain win32 tooltips.

you can use cwnd::eanabletooltips activate it. msdn doku (see link contains full sample)

also code project has sample it.