Billboard-Wall Structure CAD Design System

Nowadays Billboard develops rapidly, while Billboard designing is done irrationally by building departments in terms of experience or through universal structure device tools without professional software, the first ?the Technology regulations for Outdoor Billboard Steel Structure?in our country specialized billboard design in 2003. 7.1. according to this, Outdoor billboard structure CAD design system has been studied and a feasible and friendly structure design system should be developed to meet convenient efficient and safe requirement for deviser.The system uses Windows 2000 as the developing platform and VC++6.0 as the developing tool and AutoCAD as the graphics-supporting environment. The system also employs the C/C++ programming technique under the Windows operating system, the MFC foundation class library, AutoCAD developing tool-ObjectARX and other techniques. The system is established using the Object-oriented programming method, it has relatively high stability and efficiency.this CAD design system has three modules, pre-process, core-process and post-process, the pre-process module mainly collects data using Windows standard controls and checks the validity of the data . the core-process module performs comprehensive analysis and calculation with the "data The post-process plots the shop drawings in the AutoCAD environment based on the data exported from the core-process module.