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Adding bar codes to web pages using the TALtech Bar Code
ActiveX control is extremely easy when all web clients
are running Windows and Internet Explorer 4.0 or above.
Internet Explorer under Windows fully supports ActiveX
controls and will even automatically download and install
the ActiveX control from your web server the first time
a client visits a page containing a reference to the ActiveX
control. Once the control has been installed on the clients
PC, it does not need to be downloaded or installed again
if the user visits other web pages that contain references
to the control. The steps for adding client side ActiveX
bar codes are as follows:
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Copy the Internet CAB file containing the redistributable
version of the TALtech Bar Code ActiveX control to
a folder on your web server. The server can be any
type of system including UNIX, Linux, Windows, etc.
The TALtech Bar Code ActiveX Control is provided with
the necessary CAB file (approximately 500Kb) so that
all you need to do is copy the supplied CAB file your
server.
- Add Object tags to your HTML documents that reference
the control.
The following sample object tags show how to insert a TALtech Bar Code Object
into an HTML document. The first object points to a LPK (license) file that
must be installed on the users system in their Windows folder. The TALtech
Bar Code ActiveX Control will not be scriptable in Internet Explorer without
this file installed. The LPK file is installed automatically from the Internet
CAB file and the Setup program that comes with the TALtech Bar Code ActiveX
Control. The second object tag below is for the actual control. The name
of the control is set using the ID="controlname" setting and the
CODEBASE tag points to a web URL or a file path where the setup program for
the control can be found if the control is not currently installed on the
user's system. If the control is not installed then the client's browser
will automatically download the control from the specified URL and install
it. The TALtech Bar Code ActiveX Control comes complete with a fully code
signed CAB file (signed with Verisign's Authenticode technology) so that
all you need to do is copy the supplied CAB file to a folder on your web
server.
Note: The URL in the CODEBASE tag should reference the CAB file on your web
server.
To place a TALtech Bar Code ActiveX Control in a HTML document you simply
add the following object tags to your document where you want a bar code
to appear.
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<object CLASSID="CLSID:5220cb21-c88d-11cf-b347-00aa00a28331">
<param name="LPKPath" value="Talbc.lpk"></object>
<object ID="TALBarCd1" CLASSID="CLSID:C917E12F-9757-11D2-85DB-F01851C10000"
CODEBASE="http://www.YourWebServer.com/talbcocx.cab"></object>
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- Add VBScript or JavaScript code to your HTML document
to set the properties of the control so that it generates
the type of bar code that you want as well as the message
that you want to encode in the bar code.
To set properties of the TALtech Bar Code ActiveX
Control after it has been placed in an HTML document,
you would use JavaScript or VBScript code similar to
the following line:
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TALBarCd1.message="1234567890" |
Refer to the documentation that comes with the TALtech
Bar Code ActiveX Control for a complete reference to
all of the properties and methods that are available
in the control.
To see an example of a web page that demonstrates generating
bar codes with the TALtech Bar Code ActiveX control using
the client side technique, download
the ActiveX demo.
Note: You must be running a 32 bit version of Windows, have the TALtech Bar
Code ActiveX control (or the demo version) installed and your browser must
be Internet Explorer version 4.0 or above.
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