There is a way to get mouse support for yarn immediately, without writing
any code. Pick up a program called xpcmouse (I think the actual file is
called xpcmou13.zip) at the Simtel archive. It is a tsr that takes up
a modest 3K or so of memory, and provides the major mouse functions for
programs that dont have it. Specifically it provides these features:
1) Mouse moves the cursor or highlight bar
2) cut and paste to a memory buffer
3) append highlighted text to a file of your choice
4) highlight a single ``word'' by double clicking,
where you get to define the characters that make up
a ``word''.
5) Highlight, and thus cut and paste columns, but highlighting
an arbitarary rectangle of text. It also highlights in the ordinary
line by line way
I tried the program with yarn and it works with both yarn 16 and yarn 32.
With the latter, you need to reinitialize the TSR by pressing some hot
keys, after you start yarn.
Xpcmouse provides the above mouse support in dos, in general, except for
those programs that have their own mouse support.