这是一个从区位码到Unicode码的变换模块，在汉字处理时经常会用到这种程序，它通过读取一个转换文件，构建一个散列查找表，用于完成从区位码到Unicode码的变换。通过反转码表或者更改码表，该模块还可用于反向变换，或者用于其它需要快速变换的地方。

　　该模块中包含了足够的源文件，都是以标准C编制的，可以在任何编译环境下进行编译，并提供了调用例子及测试文件。接口定义见cmap.cpp文件。-This is an area code from Unicode code to transform module, in the handling of Chinese characters often used in such procedures, it adopted a change to read documents, the building of a hashing table. for the completion of area codes from Unicode code to transform. Through reverse stopwatch or changes stopwatch, the module can be used to reverse transformation, or for other needs of the rapid transformation. The module contains a sufficient source documents are prepared by the C standard, in any environment compiler for compiling, and provides examples and test called document. See cmap.cpp interface definition document.