| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a reduction in effort related to development of objects that depend on a device in a device control program. <P>SOLUTION: A host computer 10 in which objects operate under an operating system 12 includes: a printer CO21 that provides a POS application program 11 with an interface for each type of device; a printer SO22 that executes a process by a device unit while providing the printer CO21 with the interface for each type of device; and a wrapper SO30 that executes the process of at least a part of a method called by the printer CO21 instead of the printer SO22 and, when the printer CO21 calls other method, calls a method of the printer SO22 while calling the method of the printer SO22 on the basis of a result of the process having been executed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
