symbian

问题 Let’s share on a common place ideas about the NFC development, technology… I warmly welcome any comments you might have – either about the Android or Symbian SDK or about the NFC in general. From my point of view the general question is what we can develop, i.e. what kinds of applications can we bring to the market with the NFC technology? And how can we, developers, earn money and benefit from the NFC? I think there is an expectation the NFC will open the door for numerous services and

问题 I have very little idea about mobile platforms, though I am interested to program for them. Would you please compare J2ME VS Android VS iPhone VS Symbian VS Windows CE . I would like to know: which one is better which one should I choose and why if there is any VM technology to test the programs is there any IDE, debugging facilities? Personally, I would like to code for open source, but any suggestions are welcome. I have preliminary knowledge on Java. I would also like to know, if there is

问题 I have a webservice that I need to POST some data to using Qt. I figured that I can use a QByteArray when POSTing to the web service. My question is, how can I format this array in order to be parsed correctly at the other end? This is the code I have so far: // Setup the webservice url QUrl serviceUrl = QUrl(\"http://myserver/myservice.asmx\"); QByteArray postData; /* Setup the post data somehow I want to transmit: param1=string, param2=string */ // Call the webservice QNetworkAccessManager

问题 What mobile platform should I start learning? What matters is: ease popularity of the platform low cost of the SDK and actual handheld 回答1: I think 3-4 platforms have a future. But it depends on what platform do you like and how you like freedom in distributing your applications :) Windows Phone 7 .NET and Silverlight through Windows Phone Marketplace Android Java through Android Market (fees) or like normal applications iPhone Objective-C or Java (Developing iPhone Applications using Java)

问题 What is the purpose of the __builtin_offsetof operator (or _FOFF operator in Symbian) in C++? In addition what does it return? Pointer? Number of bytes? 回答1: It's a builtin provided by the GCC compiler to implement the offsetof macro that is specified by the C and C++ Standard: GCC - offsetof It returns the offset in bytes that a member of a POD struct/union is at. Sample: struct abc1 { int a, b, c; }; union abc2 { int a, b, c; }; struct abc3 { abc3() { } int a, b, c; }; // non-POD union abc4