TsgDXFExport

Unit: DXFExport

Description

The TsgDXFExport class provides API for export yours vector graphics files to DXF files.

Learn more about DXF

DXF is an acronym for Drawing eXchange Format. DXF is a widely used file format for exchanging 2D and 3D CAD data. It's not an open format but owned by AutoDesk Inc. who used it for their program AutoCAD. With every new version of AutoCAD the definition of DXF is changed but nevertheless there are many of programs which are capable of reading and writing some form of DXF. DXF is an ASCII replication of the contents of a drawing file enabling the interchange of files from one CAD system to another program. DXF import/export is supported by a wide variety of applications, ranging from CAD products to word processors, desktop publishing and illustration tools. The DXF CAD format has become the de facto standard in PC based CAD industry with many other CAD systems able to read and write this format too.

DXF Exporter allows programmers to create DXF files as easy as possible. All you need is to draw image using Windows GDI functions onto DXF Exporter’s DC or make a metafile and give it to the Exporter. DXF Exporter reads Windows Metafile structure and makes DXF file automatically.

For specifying of AutoCAD version use AutoCADVer property.

Properties

Properties	Descriptions
AutoCADVer	The property defines using DXF-file format.
Block	The property returns the name of the BLOCK that is currently being filled with entities.
Canvas	The property points to the TCanvas object which can be used for drawing with the standard TCanvas methods.
CurrentLayer	The property obtains current layer.
DefaultHatchPatternScale	The property sets and gets DefaultHatchPatternScale.
DefaultLTypeScale	The property sets and gets DefaultLTypeScale.
IsParseWhite	The property sets if white rectangles hide entities (parts of entities) lying under them.
Layers	The property sets and gets the list of layers.
Millimeters	The property sets and gets measurement system.
Offset	The property sets and gets the hatch pattern line offset.
PenWidthRatio	The property sets and gets pen’s width ratio.
UndefinedInserts	The property returns a list of undefined INSERT entities.
UnitSize	The property defines scale factor for unit size.
Use01MM	The property sets if loading coordinates are divided by 100.
UseMetafileRatio	The property defines whether the ratio between height and width of metafile should be used.
UseUnicode	The property can be used for correct displaying Unicode fonts.

Methods

Methods	Descriptions
AddArc	The method adds the arc.
AddCircle	The method adds the circle
AddDimension	The method adds the dimension.
AddEllipse	The method adds the ellipse.
AddHatch	The method adds the hatch.
AddLeader	The method adds the leader.
AddLine	The method adds the line.
AddLType	The method adds the linetype.
AddMText	The method adds the Mtext.
AddPixel	The method adds the pixel.
AddPolyBezier	The methods adds the polybezier.
AddPolyLine	The method adds the polyline.
AddRectangle	The method adds the rectangle.
AddSolid	The method adds the solid.
AddText	The method adds the text.
AddXref	The method adds the xref.
BeginBlock	The method creates the block.
Clear	The method destroys all entities in the instance.
Create	Creates an instance of the TsgDXFExport class.
Destroy	Destroys an instance of the TsgDXFExport class.
EndBlock	The method closes the block.
EndDraw	The method finished the drawing.
Insert	The method creates and adds the insert entity.
LoadFromFile	The method loads data from Windows metafile.
LoadFromMetafile	The method loads data from TMetafile type instance.
SaveToFile	The method saves the current data to DXF-file.
SaveToStream	The method saves the current data to specified stream in DXF text format.
SetLayerByString	The method sets current layer.