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README.200
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1996-05-06
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TtaDBMRO v2.00
1. v2.00 Features
2. Demo Project MROPROJ1
3. Known Problems
4. Memory Leaks
5. Trial Run Users & TADBMRO.INC
1. v2.00 Features
---------------
For a complete list of changes in 2.00, please see Version History in
TADBMRO.WRI. Here are some highlights:
* Full support of Delphi 2.0
* TDBLookupComboBox support added
* TDBLookupListBox support added
* Compatible with Orpheus v2.0
* Compatible with InfoPower v1.2
2. Demo Project MROPROJ1
-------------------------
Try running the updated demo and see what 2.00 can do! Please note that any
visual inconsistancies within the selected record are not caused by TtaDBMRO.
Instead, this is simply how Borland programmed them. TtaDBMRO faithfully
duplicates them. These inconsistancies are most apparent on the tab labeled
'Lookups, CheckBoxes, ...' when Enabled is unchecked.
MROPROJ1 uses a lot of system resources, so don't try running it with many
other applications running. If you have trouble running it directly from
the Delphi IDE, try just compiling it, then close the project (but leave
Delphi running if you are using the Trial Run version), and then run MROPROJ1
from File Manager (or equivalent).
For registered users, if you try to compile MROPROJ1 and you have enabled
support for third party products, be sure you have the latest version of
the third party software.
The demo has one known problem: when toggling the Ctl3D property of
TDBLookupComboPlus the control frequently fails to display it's contents and
may generate an index exception (this is a problem with the component
itself, not taDBMRO). Toggling BorderStyle after toggling Ctl3D usually
fixes the problem. This problem can occur with TDBLookupCombo as well.
TDBLookupComboPlus also mis-positions it's drop down button under WinNT.
This, along with the aforementioned problem, are due to be fixed in its
next release.
3. Known Problems
------------------
There is one known cosmetic bugs regarding the cursor shape when over
nonselected records: The cursor does not assume the crIBeam shape over
TDBComboBox fields in Windows 3.1 (WinNT and Win95 work fine).
There is one functional bug: clicking on the scroll bar of a TDBMemo field in
a nonselected record will not scroll the contents of the field, it only gives
the field the focus. Subsequent clicks work normally.
TtaDBMRO also does not support any of the TDBLookupList.Options settings
(loColLines, loRowLines, loTitles) and it only supports a single LookupDisplay
field.
4. Memory Leaks
----------------
If TtaDBMRO descends from TDBGrid (which is the case most of time unless you
are using the InfoPower option), then there is a memory leak because
TDBGrid.Destroy does not call FTitleFont.Free. If you have the VCL source
code, you can apply this patch and resolve the problem.
5. Trial Run Users & TADBMRO.INC
---------------------------------
Trial run users should not make any changes to TADBMRO.INC.