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- Newsgroups: vmsnet.tpu
- Subject: Rectangular Highlighting
- Message-ID: <01GSLXWWXODE96VN0W@WVNVMS.WVNET.EDU>
- From: williams@ab.wvnet.edu
- Date: Tue, 22 Dec 1992 08:13:42 -0500 (EST)
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- > From: "kacovert@miavx1.acs.muohio.edu" 22-DEC-1992 01:19:04.64
- >
- > The selection should be in bold rather than inverse video. The
- > selection also looks like it's selecting lines, but trust me, it'll
- > work (BTW, why doesn't box selects highlight boxes rather than lines -
- > this doesn't make sense to me.) Then issue the cut command.
- >
- > Kent Covert, Software Coordinator
- > Miami Computing and Information Services
-
-
- EVE's highlighting in character mode rather than block mode
- is probably due to a couple of things:
-
- 1. The TPU engine underneath EVE does not currently
- support blocks. The block mode work is done pretty
- much by EVE, which does not have any display control.
-
- 2. The difficulty of highlighting a block is pretty
- significant, especially if you do it in EVE.
-
- Imagine a block selection that's 100 lines high and 10
- characters wide. Your cursor is in the lower righ-hand
- corner. Now, move the cursor one character to the right.
- The EVE code would have to update all the ranges in a 100
- range array. Now, imagine you've decided to hold the
- cursor down for 3 seconds, engaging auto-repeat for 2.5 of
- them....
-
- There's also the problem of what to do (in the display) if
- some lines are not as wide as the selected range.
-
- Freely hypothesizing,
-
- -Tom Williams
- Computer Center Manager
- Alderson-Broaddus College
- WILLIAMS@AB.WVNET.EDU
-