Cell phone jammer equips with LED to indicate the status

All programming on the first step in this, the classic among the classics, we have just started to unlock the computer language mostly from Hello world. Also supports the development of the Symbian OS, char * type system, but more to promote the use of the descriptor system, Symbian OS, the string is known as "descriptors", because they are self-descriptive. It represents the length of the string and the underlying memory layout information is saved in the descriptor. Descriptor array of characters and character pointers in the standard C language to be complex, but its unique design makes it very efficient in a small amount of memory on the device, only a very small memory length and memory layout information can be saved. The painting canvas size of     cell phone jammer can be specifically made to meet the customer’s requirement.
Symbian OS descriptor is quite confusing because of his wide range of Different types of descriptors have different characteristics and usage, but can often interchangeable. They have a mechanism to prevent memory overflow, and does not depend on the end of the symbol \ 0 to determine the length of the string. Can be divided into the following categories: Abstract: (a TDes, TDesC are), and other descriptor base class can not be instantiated, and is generally used as the parameter of the function. Literal: (TLitC, _LIT ()), used to store the literal string, the general use of the latter. Buffer: (TBuf, TBufC), the data stored in the stack, the size determined at compile time. It is   cell phone jammer     in the form of globe.
Therefore, it is commonly used the Visual Studio.NET2003 and Carbide.vs as the integrated development environment. Symbian S60 framework and MFC is somewhat similar, they have the same application, document, view and control. S60 is also the message passing mechanism, but also the Callback. Symbian the biggest feature is the clear stack and active objects, the importance of the two can not be replaced, but also unique to this operating system. Hello world as the initial stage of all programming languages, occupies a position can not be changed, all in Britain, Germany, the U.S. version of the programming material, Hello world always as the first record of a TEST into books.    cell phone jammer equips with LED to indicate the status.