c++ - .c_str() weirdness? Data changes without rhyme or reason? -

-

मेरे पास यह साधारण कार्य है: 

  const wchar_t * स्ट्रिंग मैनेजर :: GetWCharTStar (int stringId ) {Std :: wstring मूल स्ट्रिंग = स्ट्रिंग मैनेजर :: GetString (stringId); Const wchar_t * retStr = originalString.c_str (); वापसी retStr; }

उस फ़ंक्शन के दूसरी पंक्ति में, मेरे पास सही wchar_t * है हालांकि, जब मैं वापस जाना होता हूं, तो डेटा कूड़ा डेटा पर स्विच होता है। बीच में कोई फ़ंक्शन नहीं है क्या देता है?!

मूल स्ट्रिंग को स्टैक पर आवंटित किया गया है। .c_str () विधि सिर्फ wstring ऑब्जेक्ट के कुछ निकटतम आंतरिक मेमोरी में एक सूचक देता है। जब फ़ंक्शन देता है, मूल स्ट्रिंग गुंजाइश से बाहर निकल जाती है और नष्ट हो जाती है, इसलिए पॉइंटर वैल्यू आपको हटाई गई मेमोरी के लिए पॉइंट मूव देती है।

यदि आपको यह करने की आवश्यकता है, तो आपको डेटा की प्रतिलिपि मेमोरी में करना चाहिए नए या मॉलोक () के साथ आवंटित करें, और फिर कॉलर को उस मेमोरी को हटाना / मुक्त करना होगा।


Comments

Post a Comment

Popular posts from this blog

c# - How to capture HTTP packet with SharpPcap -

-
I would like to capture all incoming HTTP packets on my machine. To do this, I am using SharpPcap which is a WinPcap The cover is. SharpPcap works very well, but it captures TCP packets and what it wants to do for me is a very low level. Does anyone know how can I easily get full HTTP requests / reactions from all these TCP packets? Thanks SharpPcap is already able to capture the packet in the same way That's what the virus does (just in the code instead of the GUI). And you can either either parse them directly or you can put them in the drive in the common .pcap file format. The steps to parse the capture are: Open a connection at any time Loop a while Or start capturing using an event callback Parsing the raw packet for the type you want If you are reading .PPP dump files In addition to calling you an offline capture reader is almost the same, there is no need to select an interface, and you can set the majority There is no need to do the modes. All st...
Read more

php - Multiple Select with Explode: only returns the word "Array" -

-
By using Wordpress I have created a multiple selection box so that users can select categories to exclude. When the page is initially loaded, I see my predefined default option. However, when I select a new value and I save ... I only see the word "Array" and have not chosen anything else? & lt; Class = "amultiple" id = "& lt; php echo $ value ['id'] ;? gt;" name = "& gt; php echo $ value ['id'] ;; gt; []" Multiple = "multiple" size = "8" & gt; & Lt ;? Php global option; Foreign currency ($ value as value $) {if (get_settings ($ value ['id']) === FALSE {$$ value ['id'] = $ value ['std']; } And {$$ value ['id'] = get_settings ($ value ['id']); }} $ Ranges = & amp; Amp; Categories ('type = post & orderbiz = name & amp; hide_empty = 1'); If ($ ranges) {$ ex_cat = implode (',', $ tt_cat_exclude); Forex Currency ($ range a...
Read more

jquery - SimpleModal Confirm fails to submit form -

-
I am trying to confirm jQuery to show yes / no confirmation when I submit a form. I had modified (in the last list) to capture and block form submissions. However, it only works with jQuery 1.2.6, a recent upgrade stops 1.3.2, if yes is clicked, then by submitting the form. But I can not understand what is wrong / inconsistent in my code now. Demo (which works in both versions of a simple window.href implementation). $ (document) .ready (function () {$ ('input.delete'). Click (function (e) {e.preventDefault (); var target = $ (e .target); Confirm ("Really delete this event?", Function () {target.click ()});});}); How about something like this? The idea of ​​catching clicks (and fire!) On the submitted event is not click event. $ (document) .ready (function () {$ ('# myForm'). Submit (function () {var f = this; Confirm (" Remove? ", Function () {$ (f). Submit ();}) Return; Return the initial session;}}}}; Hope That this is som...
Read more