LanapBotDetect::CodeTypeEnum Reference

LanapBotDetect::CodeTypeEnum contains all valid values of the LanapBotDetect component's CodeType property. It represents the type of code rendered in CAPTCHA images and spoken in the audio CAPTCHAs.

• CodeTypeEnum Members
• CodeTypeEnum Default
• CodeTypeEnum Usage
• CodeTypeEnum Notes
• CodeTypeEnum Screenshots

Members

[VB]

Public Enum CodeTypeEnum
  AlphaNumeric = 0
  Alpha = 1
  Numeric = 2
End Enum

[C++]

typedef enum CodeTypeEnum
{
  AlphaNumeric = 0,
  Alpha = 1,
  Numeric = 2 
} CodeTypeEnum;

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Default value

If the CodeType property is not set, 0 (AlphaNumeric) is used by default.

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Usage

[ASP]

' Assume we are using the LanapBotDetectHandler.asp helper

' Example 1: simple assignment
<img src=
  "LanapBotDetectHandler.asp?Command=CreateImage&CodeType=1" 
  alt="CAPTCHA image" />
	
' Example 2: randomization
<%
Dim codeType 
Randomize
codeType = CInt( 2 * Rnd() ) 
%>

<img src=
  "LanapBotDetectHandler.asp?Command=
  CreateImage&CodeType=<%=codeType%>" alt="CAPTCHA image" />

Direct access examples:

[VB]
Set objCaptcha = CreateObject("Lanap.BotDetect")
objCaptcha.CodeType = 1

[PHP]
$objCaptcha = new COM('Lanap.BotDetect');
$objCaptcha->CodeType = 1;

[Ruby]
require 'win32ole'
objCaptcha = WIN32OLE.new('Lanap.BotDetect')
objCaptcha.CodeType = 1

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Notes

To improve user-friendliness, the CodeTypeEnum::AlphaNumeric code generation algorithm doesn't use the full range of available characters, but excludes some easily confused character pairs - for example, '1', 'I', '7', 'L', '0', 'O', '5' and 'S' are not used.

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Screenshots

(Using the "Strippy" Text Style)

Alpha

Numeric

AlphaNumeric

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