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详细说明： VC++读写DXF源代码 The main reference for DXF file structure that is used for CadLib is the AutoCad's DXF reference. You can find more information about DXF file structure here. Classes The classes are interfaces between CadIO.dll and the main program. "Test" has come with CadLib to demonstrate how to generate a DXF file with CDxfFileWrite and CDrawing classes. CDxfFileWrite class CDxfFileWrite gathers all the commands needed to directly create a DXF file. Usage of CDxfFileWrite is as follows: Create the DXF file CDxfFi leWrite dxffile; dxffile.Create( "d:\\test.dxf" ); Begin and end the HEADER section. It's here for compatibility with some CAD programs. Others work without having HEADER section. // Header Section ------------------------------------------ dxffile.BeginSection(SEC_HEADER); dxffile.EndSection(); // close HEADER section ------------------------------------ Begin the TABLES section and put the LAYER, LTYPE, STYLE, DIMSTYLE table-types as many as you want and then close the section Collapse // Tables Section ------------------------------------------ dxffile.BeginSection(SEC_TABLES); // LTYPE table type ------------------------- dxffile.BeginTableType(TAB_LTYPE); DXFLTYPE ltype; double elem[4]; // Continuous ZeroMemory(
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