Research on shape file automatically generating technology based on VBA;

The paper analyzes the construction of shape file(.

In order to simplify the work of building graphic library, this paper proposes a method based on shape file and AutoLISP language in AutoCAD, by classifying the normal parts graph.

Contraposing the shortage of general software,this paper studies the method of making shape files,special line type and parameter design through the AutoLISP language,which develops the AutoCAD application.

Through AUTOCAD software s eplot function,you can transform all of the CAD s graph files into electronic graph files-DWF formation,and release them to the internet,so that the power plant s staff can use the superiority of their computers and network or internet timely and conveniently and speedily look up them.

As a solution,self-pringting AutoCAD graph file is put forward,and an effective printing method is introduced to solve the printing problems,and that the applicability of computerizing dynamic management and cyberizing applications of substation diagrms are improved,with certain economic value.

The format and organization of AutoCAD graphics file (DWG file) are introduced.

The paper introduced the theory and characteristics of objectARX,the second developing tool of AutoCAD,and proposed an encrpytion algorithm for graphics file based on the ARX technology combining with the request of practical engineering.