DBFilterCombo V1.1 for Borland Delphi.

For complete documentation and registration information, please read the
DBFLTCOM.WRI file contained in this archive.


History:

V1.1 November 7th 1995
	Fixed "Key Violation" Exception error message
	Improved Key handling for Drop Down List

V1.0 October 27th 1995
	First Release


Files contained in the archive:

COMPONEN.ZIP	The component files for DBFilterCombo.

SAMPLE.ZIP	The sample program based on the "FishFact" sample supplied
		with Delphi

DATABASE.ZIP	Sample Database files for use with the above samples. These
		have been adapted from the samples provided with Delphi.



Using the sample program:

The sample program assumes that you installed the Database sample programs
when Delphi was installed. If you have not done this then I recommend that
you re-install Delphi and the Borland Database Engine, or the sample will
not work (without great effort outside the scope of this document).


Installation of the sample:

Unzip the COMPONEN.ZIP file to a temporary directory. Then copy the files
DBFLTCOM.DCU and DBFLTCOM.DCR to your \DELPHI\LIB directory. You must then
install the component into the Delphi Component Library using the Options|
Install Components...|Add selection from the Delphi Menu. Add the component
\DELPHI\LIB\DBFLTCOM.DCU to the library.

Unzip the DATABASE.ZIP file and copy the contents to the \DELPHI\DEMOS\DATA
directory. If you have changed the path of the DBDEMOS alias using the Borland
Database configuration programs, then you will need to copy the files to the
new alias location. This would be the same place that the BIOFILE.DB files
are located.

Unzip the SAMPLE.ZIP file and copy the contents to the
\DELPHI\DEMOS\DB\FISHFACT directory.

Open delphi and load the FISHFACT project from the \DELPHI\DEMOS\DB\FISHFACT
directory.

The sample is essentially the same as the one supplied with delphi except that
it now includes three DBFilterCombo components. These components are linked to
fields added to the original database sample (hence the need for the
DATABASE.ZIP file) and a new database Table called HELPER. The HELPER database
contains all the Lookup information displayed in the components.

Feel free to change the database and the sample as you wish. Use the Borland
Database Desktop to see how the DBFilterCombo is used to store data in the
"Edible", "Temperature" and "Habits" fields of the BIOLIFE.DB table. Also
check on the construction of the HELPER.DB table, its pretty simple for
something so useful.


Notes:

1). The creation order of the HELPER table is important. It must be created
before the main table that uses it as a Lookup table. This is set from the
Delphi menu using the Edit|Creation Order... command. The sample project is
already setup this way.

2). The shareware version of DBFilterCombo is limited to 8 items in the Drop
Down List. If you enter an item into the edit field of a DBFilterCombo and this
item is added to the lookup table, then you may have trouble displaying that
lookup item description again. This is not so in the registered version of
the component.

3). Each of the DBFilterCombos in the sample is set up slightly different. They
all have a different DropDownCount and DropDownItemHeight, simply to draw
attention to the fact that this is possible.

4). The Multi-Line Hints were created using HintEdit. This is a FreeWare
program written by Richard Hansen (70242,3367) and "improved" by me. I have
uloaded the improved version to the Delphi Forum of Compuserve for all to use.
Its also included with the registered version of the component.

Regards, Steve Flynn