Iterate
Description​
This method calls the Proc procedure for each existing entity, including block references (INSERTs) of any nesting level. In other words, this procedure converts DXF/DWG tree structure to a linear sequence of entities, similar to Windows metafile. It is a basis for different operations such as drawing or import of CAD files.
FinishProc has to be called after the Proc function if it is not nil. By default FinishProc is nil. It serves for auxiliary needs.
Before calling Iterate necessary to set the Params.Matrix field; it is initial value of coordinate transformation matrix. This matrix is automatically changed on enter to block reference and restored on exit from it. Params.Additional is user-defined; all other fields of Params are initialized by Iterate.
As rule, the Params records are the part of object wich has Proc as its own method.
This property has been left for compatibility with previous versions of the library. We recommend using the following way instead of it:
Converter.Layouts[I].Iterate (I=0..Converter.LayoutsCount-1)