How to assign values ​​to block tags in DWG files

[fly-sure]

The picture shows the blocks created in the dwg file. I want to assign values ​​to the tags in the blocks. How can I do this?

[rurban]

Similar to TEXT, but these are ATTRIB's next to the INSERT

[fly-sure]

I have found these contents in the text_value of the Dwg_Entity_ATTRIB structure. Your suggestions are very useful to me. Thank you very much

[fly-sure]

I want to get the complete information, but I only get the first character, and Chinese cannot be output correctly. Is there any solution?

[fly-sure]

I found that the dwg_write_file function in the example is used to write a new dwg file. If I want to write the value of text_value in the original file, what function should I call?