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HISTORY.DOC
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1989-03-27
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------------------------
CXL Revision History
------------------------
Version 5.0 - March 27, 1989
o New! CXL Support BBS: (512) 590-0460 1200/2400. You need not be a
registered CXL user to call. This BBS will always have the latest
version of CXL.
o Complete context-sensitive help system. Help information can
contain multiple pages of help text per category and can be
cross-referenced for flexibility and indexed for speed.
o Shadowed windows. Windows can now have shadows. These shadows can
be translucent so that they show the characters underneath.
o The menuing functions have been significantly enhanced. Individual
menu items can have sub-menus and/or functions tied into them.
Pull-down and other multi-level menus are much easier to create.
Individual menu selections can also be defined as non-selectable.
Menu items can also have global hot keys. Menu items can have
"before" and "after" functions. Mouse support in menus has been
expanded.
o The multi-field input functions have been significantly enhanced.
They now properly support numeric data entry. Also, the behavior of
several of the editing keys has been enhanced. A conditional update
mode has been added. Input fields can have "before" and "after"
functions. True Insert mode has been added.
o Scrolling bar string picker allows you to create variable-sized
"menus" of strings to pick from. Features mouse support including
scroll bars.
o File picker with same features as string picker. Allows movement
between directories. Similar to the file pickers included in the
Turbo C and QuickC environments.
o The window TTY output string functions, such as wputs() and
wprintf(), are now able to change colors, set cursor coordinates,
and erase part or all of the window, using CXL's new window Escape
sequences. These are similar to ANSI Escape sequences, but are much
faster.
o You are now able to write to blocked and hidden windows.
o Automatic monochrome attribute translation. By default, if a
monochrome adapter is detected by videoinit(), all color attributes
will be mapped to their monochrome equivalents. This can be
overridden via a switch.
o CGA snow reduction has been put back into CXL. This is selectable
via a global variable. Thanks to Patrick Bennett and Larry Kruse.
o All video functions now work properly in non-standard text modes,
such as 132x80 and 120x43.
o The video adapter identifiers (CGA, EGA, etc.) are now prefixed with
a "V_" to avoid conflicts with Borland's BGI definitions. Also, a
few new video adapter identifiers were added.
o There are now 4 different types of mouse support provided including
a point-and-shoot mouse cursor as well as arrow-key emulation.
o Mouse functions have been modified to use actual row and column
cursor coordinates rather than X and Y pixel coordinates. This
makes working with the mouse cursor much easier.
o Internal keyboard buffer and support functions. This allows you to
create keyboard scripts, force user input, etc., by "stuffing"
keystrokes into CXL's internal keyboard buffer.
o File encryption and decryption. Allows fast encryption and
decryption of text and binary files. Thanks to Bob Stout.
o Problems fixed.
- The video functions were working under DESQview on some
machines, but not others. Thanks to Jim Nutt.
- The setlines() function was not returning to 25-line mode from
VGA 50-line mode properly. Thanks to Larry Kruse.
- The wunhide() function was unhiding the most recently hidden
window, regardless of the given window handle. Thanks to Joshua
Stern.
- The strtrim() function could trim past the start of the string
if the string was all spaces. Thanks to Curt Grimley.
- The whline() function would not function properly when drawing
on window row 0 of a borderless window starting on screen row 0.
Thanks to Ted Roberts.
- A certain error condition in wopen() could cause it to return
without restoring memory it allocated. Thanks to Nelson
Chenkin.
- The tab character, when used in window TTY output functions, was
advancing the cursor to the next tab column offset from the
screen, not from window column 0.
- In the systime() function, time codes 2 thru 4 would cause a
return of "00" for hour during the midnight hour. Now they
return "12".
o New functions. See CXL.DOC for descriptions.
cclrscrn() cvtcf() cvtci() cvtfc()
cvtic() cxlver() fcrypt() getcursz()
hidecur() kbclear() kbmhit() kbput()
kbputs() lgcursor() mapattr() msbclear()
mscondoff() mssupport() randfile() revsattr()
scancode() showcur() smcursor() strchksum()
strichksum() strisocc() strisrep() strljust()
strrjust() strsocc() strsrep() wchkbox()
wchkcol() wchkcoord() wchkrow() wdump()
wdups() wfillch() whelpcat() whelpclr()
whelpdef() whelpop() whelpopc() whelpush()
whelpushc() windowat() windump() winpbeg()
winpfba() winpfcurr() winpffind() wmenubeg()
wmenubegc() wmenuend() wmenuiba() wmenuicurr()
wmenuifind() wmenuitem() wmenuitxt() wmenumcurr()
wpickfile() wpickstr() wprintsf() wputsw()
wscrollbox() wselstr() wshadoff() wshadow()
wtabwidth() wwprints()
o Modified functions. See CXL.DOC for descriptions.
msbpress() msbreles() msgotoxy() mshbounds()
msmotion() msstatus() msvbounds() setonkey()
strins() strsetsz() videoinit() whline()
winpdef() wmenuget() wtitle() wunhide()
wvline()
o Deleted functions. The string selection functions, wsseldef() and
wsselget(), were deleted because their operation can now be emulated
using the new wselstr() function. The wsbounds() function was
deleted because the new wscrollbox() function allows you to scroll
specific regions of the window.
o There are several new global variables, so to avoid possible name
conflicts, and to organize them better, I grouped the old and new
globals under new structure-type global variables. See CXL.DOC for
descriptions of these new structure-type global variables.
struct _kbinfo contains _kbloop, _kbuf, and _onkey.
struct _vinfo contains _dvcheck, _vbios, and _videoseg.
struct _winfo contains _werrno, _wesc, _whandle, _whrec,
_wrec, and _wtotal.
Version 4.1 - September 4, 1988
o Support for Mix Power C has been added.
o Complete BIOS video support has been added. This will also serve
as a temporary solution to the problem with the CGA snow reduction
found in CXL 4.0.
o The window hiding/unhiding functions are now high level (use
handles, not pointers). This makes the hiding and unhiding of
windows much easier.
o The internal mouse support has been enhanced. Mouse movement is
smoother and there are no longer mouse "boundaries". Mouse button
presses can no longer be queued.
o Problems fixed.
- Menuing and data entry functions weren't being properly
supported on single line borderless windows. Thanks to Mark
Hall.
- The setkbloop() function was not working properly on systems
without a mouse because of a bug in getxch().
- In sysdate(), date codes 3 & 4 were returning the same result.
Thanks to Michael Hackman.
- In systime(), time codes 2 & 3, the AM/PM indicator was not
being changed from AM to PM until 1:00 PM. Thanks to John
Metzker.
o Modified functions. See CXL.DOC for descriptions.
cvaltype() whide() wunhide()
o Deleted functions. These functions were deleted because their roles
have been assumed by other functions.
boxd() filld() printcd() printsd()
Version 4.0 - July 27, 1988
Initial release of CXL.