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<title>Code-128 C</title>
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<h1>Code-128 C</h1>
<img src="sample_images/code128c.gif" align="center"> (GIF)
<BR>
<img src="sample_images/code128c.jpg" align="center"> (JPEG)
<BR>
<img src="sample_images/code128c.png" align="center"> (PNG)
<P>
Code-128 C is a continuous barcode. Its character set is '0' to '9' (plus special 
characters CODE_B and CODE_A) internally coded every two characters (digits). 
It has one check character (not shown as part of the display text in Barcode 
Control). The number of single digit characters (excluding the check character) 
must be even.
<P>
The special characters have the following barcode-defined native values:
<PRE>
	CODE_B = 100
	CODE_A = 101
</PRE>
When using these characters in the Data property, you must add 128 to the 
above native values in order to distinguish them from normal ASCII characters, 
i.e., use
<PRE>
	100 + 128 = 228 for CODE_B (or 0xE4 in hex)
	101 + 128 = 229 for CODE_A (or 0xE5 in hex)
</PRE>

These characters make it possible to mix Code-128 A, Code-128 B and Code-128 
C characters in one barcode:
<BLOCKQUOTE>
CODE_B indicates starting with the next character, Code-128 B set will 
be used.
<P>
CODE_A indicates starting with the next character, Code-128 A set will 
be used.
</BLOCKQUOTE>
In the barcode figure above, there's a CODE_B between 02 and X, i.e., the 8th 
character has code:
<PRE>
	100 + 128 = 228
</PRE>
in the Data property. Consequently the characters starting with X are actually 
encoded using the Code-128 B character set.
<P>
On Windows, you can enter special characters by keeping 
the ALT key pressed and typing 0 followed by the character code (e.g. 228).
<p>
In a URL, you'll need to URL-encode the character; 228 (0xE4) will be encoded
as %u00E4. The barcode data above would look like the following in a URL,
<pre>
	128902%u00E4X341
</pre>
<p>
<b>See Also</b></p>
<p>
<A HREF="code128a.htm">Code-128 A</A>, <A HREF="code128b.htm">Code-128 B</A>
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