reading dxf

[RobinCris]

Hello.
I am building a small automation to read dxf files.
All the dxf files are made by me, so I decide their format.
I can choose to use blocks instead of polylines for example)
Every layer is a building floor.
In this example.
The hatch color is the area type.

1. Some of the lines in the area, need to be different (different materials). what can I do that I will be able to read it automatically (both different color or line type do not work with polyline).
2. I need to put something on the walls (lines) to represent windows. I need to connect it to a specific line with the height and width information. and read automaticly from the dxf file.
   This is a 2D drawing not 3D.

Any ideas
Please advice

[andrew]

@RobinCris

1. Some of the lines in the area, need to be different (different materials). what can I do that I will be able to read it automatically (both different color or line type do not work with polyline).

Both should work fine, also with polylines.

2. I need to put something on the walls (lines) to represent windows. I need to connect it to a specific line with the height and width information. and read automaticly from the dxf file.
   This is a 2D drawing not 3D.

You could use blocks for this. It’s also possible to attache additional information to entities (XData) which is then processed through addXData[String|Real|Int] in your DL_CreationInterface implementation.
Please elaborate if that’s not what you meant.